dify

dify/web/app/components/workflow/nodes/loop/add-block.tsx

@@ -0,0 +1,80 @@
+import {
+  memo,
+  useCallback,
+} from 'react'
+import {
+  RiAddLine,
+} from '@remixicon/react'
+import { useTranslation } from 'react-i18next'
+import {
+  useAvailableBlocks,
+  useNodesInteractions,
+  useNodesReadOnly,
+} from '../../hooks'
+import type { LoopNodeType } from './types'
+import cn from '@/utils/classnames'
+import BlockSelector from '@/app/components/workflow/block-selector'
+
+import type {
+  OnSelectBlock,
+} from '@/app/components/workflow/types'
+import {
+  BlockEnum,
+} from '@/app/components/workflow/types'
+
+type AddBlockProps = {
+  loopNodeId: string
+  loopNodeData: LoopNodeType
+}
+const AddBlock = ({
+  loopNodeData,
+}: AddBlockProps) => {
+  const { t } = useTranslation()
+  const { nodesReadOnly } = useNodesReadOnly()
+  const { handleNodeAdd } = useNodesInteractions()
+  const { availableNextBlocks } = useAvailableBlocks(BlockEnum.Start, true)
+
+  const handleSelect = useCallback<OnSelectBlock>((type, pluginDefaultValue) => {
+    handleNodeAdd(
+      {
+        nodeType: type,
+        pluginDefaultValue,
+      },
+      {
+        prevNodeId: loopNodeData.start_node_id,
+        prevNodeSourceHandle: 'source',
+      },
+    )
+  }, [handleNodeAdd, loopNodeData.start_node_id])
+
+  const renderTriggerElement = useCallback((open: boolean) => {
+    return (
+      <div className={cn(
+        'system-sm-medium relative inline-flex h-8 cursor-pointer items-center rounded-lg border-[0.5px] border-components-button-secondary-border bg-components-button-secondary-bg px-3 text-components-button-secondary-text shadow-xs backdrop-blur-[5px] hover:bg-components-button-secondary-bg-hover',
+        `${nodesReadOnly && '!cursor-not-allowed bg-components-button-secondary-bg-disabled'}`,
+        open && 'bg-components-button-secondary-bg-hover',
+      )}>
+        <RiAddLine className='mr-1 h-4 w-4' />
+        {t('workflow.common.addBlock')}
+      </div>
+    )
+  }, [nodesReadOnly, t])
+
+  return (
+    <div className='absolute left-14 top-7 z-10 flex h-8 items-center'>
+      <div className='group/insert relative h-0.5 w-16 bg-gray-300'>
+        <div className='absolute right-0 top-1/2 h-2 w-0.5 -translate-y-1/2 bg-primary-500'></div>
+      </div>
+      <BlockSelector
+        disabled={nodesReadOnly}
+        onSelect={handleSelect}
+        trigger={renderTriggerElement}
+        triggerInnerClassName='inline-flex'
+        popupClassName='!min-w-[256px]'
+        availableBlocksTypes={availableNextBlocks}
+      />
+    </div>
+  )
+}
+
+export default memo(AddBlock)

dify/web/app/components/workflow/nodes/loop/components/condition-add.tsx

@@ -0,0 +1,74 @@
+import {
+  useCallback,
+  useState,
+} from 'react'
+import { useTranslation } from 'react-i18next'
+import { RiAddLine } from '@remixicon/react'
+import type { HandleAddCondition } from '../types'
+import Button from '@/app/components/base/button'
+import {
+  PortalToFollowElem,
+  PortalToFollowElemContent,
+  PortalToFollowElemTrigger,
+} from '@/app/components/base/portal-to-follow-elem'
+import VarReferenceVars from '@/app/components/workflow/nodes/_base/components/variable/var-reference-vars'
+import type {
+  NodeOutPutVar,
+  ValueSelector,
+  Var,
+} from '@/app/components/workflow/types'
+
+type ConditionAddProps = {
+  className?: string
+  variables: NodeOutPutVar[]
+  onSelectVariable: HandleAddCondition
+  disabled?: boolean
+}
+const ConditionAdd = ({
+  className,
+  variables,
+  onSelectVariable,
+  disabled,
+}: ConditionAddProps) => {
+  const { t } = useTranslation()
+  const [open, setOpen] = useState(false)
+
+  const handleSelectVariable = useCallback((valueSelector: ValueSelector, varItem: Var) => {
+    onSelectVariable(valueSelector, varItem)
+    setOpen(false)
+  }, [onSelectVariable, setOpen])
+
+  return (
+    <PortalToFollowElem
+      open={open}
+      onOpenChange={setOpen}
+      placement='bottom-start'
+      offset={{
+        mainAxis: 4,
+        crossAxis: 0,
+      }}
+    >
+      <PortalToFollowElemTrigger onClick={() => setOpen(!open)}>
+        <Button
+          size='small'
+          className={className}
+          disabled={disabled}
+        >
+          <RiAddLine className='mr-1 h-3.5 w-3.5' />
+          {t('workflow.nodes.ifElse.addCondition')}
+        </Button>
+      </PortalToFollowElemTrigger>
+      <PortalToFollowElemContent className='z-[1000]'>
+        <div className='w-[296px] rounded-lg border-[0.5px] border-components-panel-border bg-components-panel-bg-blur shadow-lg'>
+          <VarReferenceVars
+            vars={variables}
+            isSupportFileVar
+            onChange={handleSelectVariable}
+          />
+        </div>
+      </PortalToFollowElemContent>
+    </PortalToFollowElem>
+  )
+}
+
+export default ConditionAdd

dify/web/app/components/workflow/nodes/loop/components/condition-files-list-value.tsx

@@ -0,0 +1,103 @@
+import {
+  memo,
+  useCallback,
+} from 'react'
+import { useTranslation } from 'react-i18next'
+import { ComparisonOperator, type Condition } from '../types'
+import {
+  comparisonOperatorNotRequireValue,
+  isComparisonOperatorNeedTranslate,
+  isEmptyRelatedOperator,
+} from '../utils'
+import type { ValueSelector } from '../../../types'
+import { FILE_TYPE_OPTIONS, TRANSFER_METHOD } from './../default'
+import { isSystemVar } from '@/app/components/workflow/nodes/_base/components/variable/utils'
+import {
+  VariableLabelInNode,
+} from '@/app/components/workflow/nodes/_base/components/variable/variable-label'
+const i18nPrefix = 'workflow.nodes.ifElse'
+
+type ConditionValueProps = {
+  condition: Condition
+}
+const ConditionValue = ({
+  condition,
+}: ConditionValueProps) => {
+  const { t } = useTranslation()
+  const {
+    variable_selector,
+    comparison_operator: operator,
+    sub_variable_condition,
+  } = condition
+
+  const variableSelector = variable_selector as ValueSelector
+
+  const operatorName = isComparisonOperatorNeedTranslate(operator) ? t(`workflow.nodes.ifElse.comparisonOperator.${operator}`) : operator
+  const formatValue = useCallback((c: Condition) => {
+    const notHasValue = comparisonOperatorNotRequireValue(c.comparison_operator)
+    if (notHasValue)
+      return ''
+
+    const value = c.value as string
+    return value.replace(/{{#([^#]*)#}}/g, (a, b) => {
+      const arr: string[] = b.split('.')
+      if (isSystemVar(arr))
+        return `{{${b}}}`
+
+      return `{{${arr.slice(1).join('.')}}}`
+    })
+  }, [])
+
+  const isSelect = useCallback((c: Condition) => {
+    return c.comparison_operator === ComparisonOperator.in || c.comparison_operator === ComparisonOperator.notIn
+  }, [])
+
+  const selectName = useCallback((c: Condition) => {
+    const isSelect = c.comparison_operator === ComparisonOperator.in || c.comparison_operator === ComparisonOperator.notIn
+    if (isSelect) {
+      const name = [...FILE_TYPE_OPTIONS, ...TRANSFER_METHOD].filter(item => item.value === (Array.isArray(c.value) ? c.value[0] : c.value))[0]
+      return name
+        ? t(`workflow.nodes.ifElse.optionName.${name.i18nKey}`).replace(/{{#([^#]*)#}}/g, (a, b) => {
+          const arr: string[] = b.split('.')
+          if (isSystemVar(arr))
+            return `{{${b}}}`
+
+          return `{{${arr.slice(1).join('.')}}}`
+        })
+        : ''
+    }
+    return ''
+  }, [t])
+
+  return (
+    <div className='rounded-md bg-workflow-block-parma-bg'>
+      <div className='flex h-6 items-center px-1 '>
+        <VariableLabelInNode
+          className='w-0 grow'
+          variables={variableSelector}
+          notShowFullPath
+        />
+        <div
+          className='mx-1 shrink-0 text-xs font-medium text-text-primary'
+          title={operatorName}
+        >
+          {operatorName}
+        </div>
+      </div>
+      <div className='ml-[10px] border-l border-divider-regular pl-[10px]'>
+        {
+          sub_variable_condition?.conditions.map((c: Condition, index) => (
+            <div className='relative flex h-6 items-center space-x-1' key={c.id}>
+              <div className='system-xs-medium text-text-accent'>{c.key}</div>
+              <div className='system-xs-medium text-text-primary'>{isComparisonOperatorNeedTranslate(c.comparison_operator) ? t(`workflow.nodes.ifElse.comparisonOperator.${c.comparison_operator}`) : c.comparison_operator}</div>
+              {c.comparison_operator && !isEmptyRelatedOperator(c.comparison_operator) && <div className='system-xs-regular text-text-secondary'>{isSelect(c) ? selectName(c) : formatValue(c)}</div>}
+              {index !== sub_variable_condition.conditions.length - 1 && (<div className='absolute bottom-[-10px] right-1 z-10 text-[10px] font-medium uppercase leading-4 text-text-accent'>{t(`${i18nPrefix}.${sub_variable_condition.logical_operator}`)}</div>)}
+            </div>
+          ))
+        }
+      </div>
+    </div>
+  )
+}
+
+export default memo(ConditionValue)

dify/web/app/components/workflow/nodes/loop/components/condition-list/condition-input.tsx

@@ -0,0 +1,57 @@
+import { useTranslation } from 'react-i18next'
+import { useStore } from '@/app/components/workflow/store'
+import PromptEditor from '@/app/components/base/prompt-editor'
+import { BlockEnum } from '@/app/components/workflow/types'
+import type {
+  Node,
+} from '@/app/components/workflow/types'
+
+type ConditionInputProps = {
+  disabled?: boolean
+  value: string
+  onChange: (value: string) => void
+  availableNodes: Node[]
+}
+const ConditionInput = ({
+  value,
+  onChange,
+  disabled,
+  availableNodes,
+}: ConditionInputProps) => {
+  const { t } = useTranslation()
+  const controlPromptEditorRerenderKey = useStore(s => s.controlPromptEditorRerenderKey)
+  const pipelineId = useStore(s => s.pipelineId)
+  const setShowInputFieldPanel = useStore(s => s.setShowInputFieldPanel)
+
+  return (
+    <PromptEditor
+      key={controlPromptEditorRerenderKey}
+      compact
+      value={value}
+      placeholder={t('workflow.nodes.ifElse.enterValue') || ''}
+      workflowVariableBlock={{
+        show: true,
+        variables: [],
+        workflowNodesMap: availableNodes.reduce((acc, node) => {
+          acc[node.id] = {
+            title: node.data.title,
+            type: node.data.type,
+          }
+          if (node.data.type === BlockEnum.Start) {
+            acc.sys = {
+              title: t('workflow.blocks.start'),
+              type: BlockEnum.Start,
+            }
+          }
+          return acc
+        }, {} as any),
+        showManageInputField: !!pipelineId,
+        onManageInputField: () => setShowInputFieldPanel?.(true),
+      }}
+      onChange={onChange}
+      editable={!disabled}
+    />
+  )
+}
+
+export default ConditionInput

dify/web/app/components/workflow/nodes/loop/components/condition-list/condition-item.tsx

@@ -0,0 +1,342 @@
+import {
+  useCallback,
+  useMemo,
+  useState,
+} from 'react'
+import { useTranslation } from 'react-i18next'
+import { RiDeleteBinLine } from '@remixicon/react'
+import { produce } from 'immer'
+import type { VarType as NumberVarType } from '../../../tool/types'
+import type {
+  Condition,
+  HandleAddSubVariableCondition,
+  HandleRemoveCondition,
+  HandleToggleSubVariableConditionLogicalOperator,
+  HandleUpdateCondition,
+  HandleUpdateSubVariableCondition,
+  handleRemoveSubVariableCondition,
+} from '../../types'
+import {
+  ComparisonOperator,
+} from '../../types'
+import ConditionNumberInput from '../condition-number-input'
+import ConditionWrap from '../condition-wrap'
+import { comparisonOperatorNotRequireValue, getOperators } from './../../utils'
+import ConditionOperator from './condition-operator'
+import ConditionInput from './condition-input'
+import { FILE_TYPE_OPTIONS, SUB_VARIABLES, TRANSFER_METHOD } from './../../default'
+import type {
+  Node,
+  NodeOutPutVar,
+  ValueSelector,
+  Var,
+} from '@/app/components/workflow/types'
+import { VarType } from '@/app/components/workflow/types'
+import cn from '@/utils/classnames'
+import { SimpleSelect as Select } from '@/app/components/base/select'
+import { Variable02 } from '@/app/components/base/icons/src/vender/solid/development'
+import ConditionVarSelector from './condition-var-selector'
+import BoolValue from '@/app/components/workflow/panel/chat-variable-panel/components/bool-value'
+
+const optionNameI18NPrefix = 'workflow.nodes.ifElse.optionName'
+
+type ConditionItemProps = {
+  className?: string
+  disabled?: boolean
+  conditionId: string // in isSubVariableKey it's the value of the parent condition's id
+  condition: Condition // condition may the condition of case or condition of sub variable
+  file?: { key: string }
+  isSubVariableKey?: boolean
+  isValueFieldShort?: boolean
+  onRemoveCondition?: HandleRemoveCondition
+  onUpdateCondition?: HandleUpdateCondition
+  onAddSubVariableCondition?: HandleAddSubVariableCondition
+  onRemoveSubVariableCondition?: handleRemoveSubVariableCondition
+  onUpdateSubVariableCondition?: HandleUpdateSubVariableCondition
+  onToggleSubVariableConditionLogicalOperator?: HandleToggleSubVariableConditionLogicalOperator
+  nodeId: string
+  availableNodes: Node[]
+  numberVariables: NodeOutPutVar[]
+  availableVars: NodeOutPutVar[]
+}
+const ConditionItem = ({
+  className,
+  disabled,
+  conditionId,
+  condition,
+  file,
+  isSubVariableKey,
+  isValueFieldShort,
+  onRemoveCondition,
+  onUpdateCondition,
+  onAddSubVariableCondition,
+  onRemoveSubVariableCondition,
+  onUpdateSubVariableCondition,
+  onToggleSubVariableConditionLogicalOperator,
+  nodeId,
+  availableNodes,
+  numberVariables,
+  availableVars,
+}: ConditionItemProps) => {
+  const { t } = useTranslation()
+
+  const [isHovered, setIsHovered] = useState(false)
+  const [open, setOpen] = useState(false)
+
+  const doUpdateCondition = useCallback((newCondition: Condition) => {
+    if (isSubVariableKey)
+      onUpdateSubVariableCondition?.(conditionId, condition.id, newCondition)
+    else
+      onUpdateCondition?.(condition.id, newCondition)
+  }, [condition, conditionId, isSubVariableKey, onUpdateCondition, onUpdateSubVariableCondition])
+
+  const canChooseOperator = useMemo(() => {
+    if (disabled)
+      return false
+
+    if (isSubVariableKey)
+      return !!condition.key
+
+    return true
+  }, [condition.key, disabled, isSubVariableKey])
+  const handleUpdateConditionOperator = useCallback((value: ComparisonOperator) => {
+    const newCondition = {
+      ...condition,
+      comparison_operator: value,
+    }
+    doUpdateCondition(newCondition)
+  }, [condition, doUpdateCondition])
+
+  const handleUpdateConditionNumberVarType = useCallback((numberVarType: NumberVarType) => {
+    const newCondition = {
+      ...condition,
+      numberVarType,
+      value: '',
+    }
+    doUpdateCondition(newCondition)
+  }, [condition, doUpdateCondition])
+
+  const isSubVariable = condition.varType === VarType.arrayFile && [ComparisonOperator.contains, ComparisonOperator.notContains, ComparisonOperator.allOf].includes(condition.comparison_operator!)
+  const fileAttr = useMemo(() => {
+    if (file)
+      return file
+    if (isSubVariableKey) {
+      return {
+        key: condition.key!,
+      }
+    }
+    return undefined
+  }, [condition.key, file, isSubVariableKey])
+
+  const isArrayValue = fileAttr?.key === 'transfer_method' || fileAttr?.key === 'type'
+
+  const handleUpdateConditionValue = useCallback((value: string | boolean) => {
+    if (value === condition.value || (isArrayValue && value === (condition.value as string[])?.[0]))
+      return
+    const newCondition = {
+      ...condition,
+      value: isArrayValue ? [value as string] : value,
+    }
+    doUpdateCondition(newCondition)
+  }, [condition, doUpdateCondition, isArrayValue])
+
+  const isSelect = condition.comparison_operator && [ComparisonOperator.in, ComparisonOperator.notIn].includes(condition.comparison_operator)
+  const selectOptions = useMemo(() => {
+    if (isSelect) {
+      if (fileAttr?.key === 'type' || condition.comparison_operator === ComparisonOperator.allOf) {
+        return FILE_TYPE_OPTIONS.map(item => ({
+          name: t(`${optionNameI18NPrefix}.${item.i18nKey}`),
+          value: item.value,
+        }))
+      }
+      if (fileAttr?.key === 'transfer_method') {
+        return TRANSFER_METHOD.map(item => ({
+          name: t(`${optionNameI18NPrefix}.${item.i18nKey}`),
+          value: item.value,
+        }))
+      }
+      return []
+    }
+    return []
+  }, [condition.comparison_operator, fileAttr?.key, isSelect, t])
+
+  const isNotInput = isSelect || isSubVariable
+
+  const isSubVarSelect = isSubVariableKey
+  const subVarOptions = SUB_VARIABLES.map(item => ({
+    name: item,
+    value: item,
+  }))
+
+  const handleSubVarKeyChange = useCallback((key: string) => {
+    const newCondition = produce(condition, (draft) => {
+      draft.key = key
+      if (key === 'size')
+        draft.varType = VarType.number
+      else
+        draft.varType = VarType.string
+
+      draft.value = ''
+      draft.comparison_operator = getOperators(undefined, { key })[0]
+    })
+
+    onUpdateSubVariableCondition?.(conditionId, condition.id, newCondition)
+  }, [condition, conditionId, onUpdateSubVariableCondition])
+
+  const doRemoveCondition = useCallback(() => {
+    if (isSubVariableKey)
+      onRemoveSubVariableCondition?.(conditionId, condition.id)
+    else
+      onRemoveCondition?.(condition.id)
+  }, [condition, conditionId, isSubVariableKey, onRemoveCondition, onRemoveSubVariableCondition])
+
+  const handleVarChange = useCallback((valueSelector: ValueSelector, varItem: Var) => {
+    const newCondition = produce(condition, (draft) => {
+      draft.variable_selector = valueSelector
+      draft.varType = varItem.type
+      draft.value = ''
+      draft.comparison_operator = getOperators(varItem.type)[0]
+      delete draft.key
+      delete draft.sub_variable_condition
+      delete draft.numberVarType
+    })
+    doUpdateCondition(newCondition)
+    setOpen(false)
+  }, [condition, doUpdateCondition])
+
+  return (
+    <div className={cn('mb-1 flex last-of-type:mb-0', className)}>
+      <div className={cn(
+        'grow rounded-lg bg-components-input-bg-normal',
+        isHovered && 'bg-state-destructive-hover',
+      )}>
+        <div className='flex items-center p-1'>
+          <div className='w-0 grow'>
+            {isSubVarSelect
+              ? (
+                <Select
+                  wrapperClassName='h-6'
+                  className='pl-0 text-xs'
+                  optionWrapClassName='w-[165px] max-h-none'
+                  defaultValue={condition.key}
+                  items={subVarOptions}
+                  onSelect={item => handleSubVarKeyChange(item.value as string)}
+                  renderTrigger={item => (
+                    item
+                      ? <div className='flex cursor-pointer justify-start'>
+                        <div className='inline-flex h-6 max-w-full items-center rounded-md border-[0.5px] border-components-panel-border-subtle bg-components-badge-white-to-dark px-1.5 text-text-accent shadow-xs'>
+                          <Variable02 className='h-3.5 w-3.5 shrink-0 text-text-accent' />
+                          <div className='system-xs-medium ml-0.5 truncate'>{item?.name}</div>
+                        </div>
+                      </div>
+                      : <div className='system-sm-regular text-left text-components-input-text-placeholder'>{t('common.placeholder.select')}</div>
+                  )}
+                  hideChecked
+                />
+              )
+              : (
+                <ConditionVarSelector
+                  open={open}
+                  onOpenChange={setOpen}
+                  valueSelector={condition.variable_selector || []}
+                  varType={condition.varType}
+                  availableNodes={availableNodes}
+                  nodesOutputVars={availableVars}
+                  onChange={handleVarChange}
+                />
+              )}
+
+          </div>
+          <div className='mx-1 h-3 w-[1px] bg-divider-regular'></div>
+          <ConditionOperator
+            disabled={!canChooseOperator}
+            varType={condition.varType}
+            value={condition.comparison_operator}
+            onSelect={handleUpdateConditionOperator}
+            file={fileAttr}
+          />
+        </div>
+        {
+          !comparisonOperatorNotRequireValue(condition.comparison_operator) && !isNotInput && condition.varType !== VarType.number && condition.varType !== VarType.boolean && (
+            <div className='max-h-[100px] overflow-y-auto border-t border-t-divider-subtle px-2 py-1'>
+              <ConditionInput
+                disabled={disabled}
+                value={condition.value as string}
+                onChange={handleUpdateConditionValue}
+                availableNodes={availableNodes}
+              />
+            </div>
+          )
+        }
+        {!comparisonOperatorNotRequireValue(condition.comparison_operator) && condition.varType === VarType.boolean
+          && <div className='p-1'>
+            <BoolValue
+              value={condition.value as boolean}
+              onChange={handleUpdateConditionValue}
+            />
+          </div>
+        }
+        {
+          !comparisonOperatorNotRequireValue(condition.comparison_operator) && !isNotInput && condition.varType === VarType.number && (
+            <div className='border-t border-t-divider-subtle px-2 py-1 pt-[3px]'>
+              <ConditionNumberInput
+                numberVarType={condition.numberVarType}
+                onNumberVarTypeChange={handleUpdateConditionNumberVarType}
+                value={condition.value as string}
+                onValueChange={handleUpdateConditionValue}
+                variables={numberVariables}
+                isShort={isValueFieldShort}
+                unit={fileAttr?.key === 'size' ? 'Byte' : undefined}
+              />
+            </div>
+          )
+        }
+        {
+          !comparisonOperatorNotRequireValue(condition.comparison_operator) && isSelect && (
+            <div className='border-t border-t-divider-subtle'>
+              <Select
+                wrapperClassName='h-8'
+                className='rounded-t-none px-2 text-xs'
+                defaultValue={isArrayValue ? (condition.value as string[])?.[0] : (condition.value as string)}
+                items={selectOptions}
+                onSelect={item => handleUpdateConditionValue(item.value as string)}
+                hideChecked
+                notClearable
+              />
+            </div>
+          )
+        }
+        {
+          !comparisonOperatorNotRequireValue(condition.comparison_operator) && isSubVariable && (
+            <div className='p-1'>
+              <ConditionWrap
+                isSubVariable
+                conditions={condition.sub_variable_condition?.conditions || []}
+                logicalOperator={condition.sub_variable_condition?.logical_operator}
+                conditionId={conditionId}
+                readOnly={!!disabled}
+                handleAddSubVariableCondition={onAddSubVariableCondition}
+                handleRemoveSubVariableCondition={onRemoveSubVariableCondition}
+                handleUpdateSubVariableCondition={onUpdateSubVariableCondition}
+                handleToggleSubVariableConditionLogicalOperator={onToggleSubVariableConditionLogicalOperator}
+                nodeId={nodeId}
+                availableNodes={availableNodes}
+                availableVars={availableVars}
+              />
+            </div>
+          )
+        }
+      </div>
+      <div
+        className='ml-1 mt-1 flex h-6 w-6 shrink-0 cursor-pointer items-center justify-center rounded-lg text-text-tertiary hover:bg-state-destructive-hover hover:text-text-destructive'
+        onMouseEnter={() => setIsHovered(true)}
+        onMouseLeave={() => setIsHovered(false)}
+        onClick={doRemoveCondition}
+      >
+        <RiDeleteBinLine className='h-4 w-4' />
+      </div>
+    </div>
+  )
+}
+
+export default ConditionItem

dify/web/app/components/workflow/nodes/loop/components/condition-list/condition-operator.tsx

@@ -0,0 +1,94 @@
+import {
+  useMemo,
+  useState,
+} from 'react'
+import { useTranslation } from 'react-i18next'
+import { RiArrowDownSLine } from '@remixicon/react'
+import { getOperators, isComparisonOperatorNeedTranslate } from '../../utils'
+import type { ComparisonOperator } from '../../types'
+import Button from '@/app/components/base/button'
+import {
+  PortalToFollowElem,
+  PortalToFollowElemContent,
+  PortalToFollowElemTrigger,
+} from '@/app/components/base/portal-to-follow-elem'
+import type { VarType } from '@/app/components/workflow/types'
+import cn from '@/utils/classnames'
+const i18nPrefix = 'workflow.nodes.ifElse'
+
+type ConditionOperatorProps = {
+  className?: string
+  disabled?: boolean
+  varType: VarType
+  file?: { key: string }
+  value?: string
+  onSelect: (value: ComparisonOperator) => void
+}
+const ConditionOperator = ({
+  className,
+  disabled,
+  varType,
+  file,
+  value,
+  onSelect,
+}: ConditionOperatorProps) => {
+  const { t } = useTranslation()
+  const [open, setOpen] = useState(false)
+
+  const options = useMemo(() => {
+    return getOperators(varType, file).map((o) => {
+      return {
+        label: isComparisonOperatorNeedTranslate(o) ? t(`${i18nPrefix}.comparisonOperator.${o}`) : o,
+        value: o,
+      }
+    })
+  }, [t, varType, file])
+  const selectedOption = options.find(o => Array.isArray(value) ? o.value === value[0] : o.value === value)
+  return (
+    <PortalToFollowElem
+      open={open}
+      onOpenChange={setOpen}
+      placement='bottom-end'
+      offset={{
+        mainAxis: 4,
+        crossAxis: 0,
+      }}
+    >
+      <PortalToFollowElemTrigger onClick={() => setOpen(v => !v)}>
+        <Button
+          className={cn('shrink-0', !selectedOption && 'opacity-50', className)}
+          size='small'
+          variant='ghost'
+          disabled={disabled}
+        >
+          {
+            selectedOption
+              ? selectedOption.label
+              : t(`${i18nPrefix}.select`)
+          }
+          <RiArrowDownSLine className='ml-1 h-3.5 w-3.5' />
+        </Button>
+      </PortalToFollowElemTrigger>
+      <PortalToFollowElemContent className='z-10'>
+        <div className='rounded-xl border-[0.5px] border-components-panel-border bg-components-panel-bg-blur p-1 shadow-lg'>
+          {
+            options.map(option => (
+              <div
+                key={option.value}
+                className='flex h-7 cursor-pointer items-center rounded-lg px-3 py-1.5 text-[13px] font-medium text-text-secondary hover:bg-state-base-hover'
+                onClick={() => {
+                  onSelect(option.value)
+                  setOpen(false)
+                }}
+              >
+                {option.label}
+              </div>
+            ))
+          }
+        </div>
+      </PortalToFollowElemContent>
+    </PortalToFollowElem>
+  )
+}
+
+export default ConditionOperator

dify/web/app/components/workflow/nodes/loop/components/condition-list/condition-var-selector.tsx

@@ -0,0 +1,58 @@
+import { PortalToFollowElem, PortalToFollowElemContent, PortalToFollowElemTrigger } from '@/app/components/base/portal-to-follow-elem'
+import VariableTag from '@/app/components/workflow/nodes/_base/components/variable-tag'
+import VarReferenceVars from '@/app/components/workflow/nodes/_base/components/variable/var-reference-vars'
+import type { Node, NodeOutPutVar, ValueSelector, Var, VarType } from '@/app/components/workflow/types'
+
+type ConditionVarSelectorProps = {
+  open: boolean
+  onOpenChange: (open: boolean) => void
+  valueSelector: ValueSelector
+  varType: VarType
+  availableNodes: Node[]
+  nodesOutputVars: NodeOutPutVar[]
+  onChange: (valueSelector: ValueSelector, varItem: Var) => void
+}
+
+const ConditionVarSelector = ({
+  open,
+  onOpenChange,
+  valueSelector,
+  varType,
+  availableNodes,
+  nodesOutputVars,
+  onChange,
+}: ConditionVarSelectorProps) => {
+  return (
+    <PortalToFollowElem
+      open={open}
+      onOpenChange={onOpenChange}
+      placement='bottom-start'
+      offset={{
+        mainAxis: 4,
+        crossAxis: 0,
+      }}
+    >
+      <PortalToFollowElemTrigger onClick={() => onOpenChange(!open)}>
+        <div className="cursor-pointer">
+          <VariableTag
+            valueSelector={valueSelector}
+            varType={varType}
+            availableNodes={availableNodes}
+            isShort
+          />
+        </div>
+      </PortalToFollowElemTrigger>
+      <PortalToFollowElemContent className='z-[1000]'>
+        <div className='w-[296px] rounded-lg border-[0.5px] border-components-panel-border bg-components-panel-bg-blur shadow-lg'>
+          <VarReferenceVars
+            vars={nodesOutputVars}
+            isSupportFileVar
+            onChange={onChange}
+          />
+        </div>
+      </PortalToFollowElemContent>
+    </PortalToFollowElem>
+  )
+}
+
+export default ConditionVarSelector

dify/web/app/components/workflow/nodes/loop/components/condition-list/index.tsx

@@ -0,0 +1,126 @@
+import { RiLoopLeftLine } from '@remixicon/react'
+import { useCallback, useMemo } from 'react'
+import {
+  type Condition,
+  type HandleAddSubVariableCondition,
+  type HandleRemoveCondition,
+  type HandleToggleConditionLogicalOperator,
+  type HandleToggleSubVariableConditionLogicalOperator,
+  type HandleUpdateCondition,
+  type HandleUpdateSubVariableCondition,
+  LogicalOperator,
+  type handleRemoveSubVariableCondition,
+} from '../../types'
+import ConditionItem from './condition-item'
+import type {
+  Node,
+  NodeOutPutVar,
+} from '@/app/components/workflow/types'
+import cn from '@/utils/classnames'
+
+type ConditionListProps = {
+  isSubVariable?: boolean
+  disabled?: boolean
+  conditionId?: string
+  conditions: Condition[]
+  logicalOperator?: LogicalOperator
+  onRemoveCondition?: HandleRemoveCondition
+  onUpdateCondition?: HandleUpdateCondition
+  onToggleConditionLogicalOperator?: HandleToggleConditionLogicalOperator
+  nodeId: string
+  availableNodes: Node[]
+  numberVariables: NodeOutPutVar[]
+  onAddSubVariableCondition?: HandleAddSubVariableCondition
+  onRemoveSubVariableCondition?: handleRemoveSubVariableCondition
+  onUpdateSubVariableCondition?: HandleUpdateSubVariableCondition
+  onToggleSubVariableConditionLogicalOperator?: HandleToggleSubVariableConditionLogicalOperator
+  availableVars: NodeOutPutVar[]
+}
+const ConditionList = ({
+  isSubVariable,
+  disabled,
+  conditionId,
+  conditions,
+  logicalOperator,
+  onUpdateCondition,
+  onRemoveCondition,
+  onToggleConditionLogicalOperator,
+  onAddSubVariableCondition,
+  onRemoveSubVariableCondition,
+  onUpdateSubVariableCondition,
+  onToggleSubVariableConditionLogicalOperator,
+  nodeId,
+  availableNodes,
+  numberVariables,
+  availableVars,
+}: ConditionListProps) => {
+  const doToggleConditionLogicalOperator = useCallback((conditionId?: string) => {
+    if (isSubVariable && conditionId)
+      onToggleSubVariableConditionLogicalOperator?.(conditionId)
+    else
+      onToggleConditionLogicalOperator?.()
+  }, [isSubVariable, onToggleConditionLogicalOperator, onToggleSubVariableConditionLogicalOperator])
+
+  const isValueFieldShort = useMemo(() => {
+    if (isSubVariable && conditions.length > 1)
+      return true
+
+    return false
+  }, [conditions.length, isSubVariable])
+  const conditionItemClassName = useMemo(() => {
+    if (!isSubVariable)
+      return ''
+    if (conditions.length < 2)
+      return ''
+    return logicalOperator === LogicalOperator.and ? 'pl-[51px]' : 'pl-[42px]'
+  }, [conditions.length, isSubVariable, logicalOperator])
+
+  return (
+    <div className={cn('relative', conditions.length > 1 && !isSubVariable && 'pl-[60px]')}>
+      {
+        conditions.length > 1 && (
+          <div className={cn(
+            'absolute bottom-0 left-0 top-0 w-[60px]',
+            isSubVariable && logicalOperator === LogicalOperator.and && 'left-[-10px]',
+            isSubVariable && logicalOperator === LogicalOperator.or && 'left-[-18px]',
+          )}>
+            <div className='absolute bottom-4 left-[46px] top-4 w-2.5 rounded-l-[8px] border border-r-0 border-divider-deep'></div>
+            <div className='absolute right-0 top-1/2 h-[29px] w-4 -translate-y-1/2 bg-components-panel-bg'></div>
+            <div
+              className='absolute right-1 top-1/2 flex h-[21px] -translate-y-1/2 cursor-pointer select-none items-center rounded-md border-[0.5px] border-components-button-secondary-border bg-components-button-secondary-bg px-1 text-[10px] font-semibold text-text-accent-secondary shadow-xs'
+              onClick={() => doToggleConditionLogicalOperator(conditionId)}
+            >
+              {logicalOperator && logicalOperator.toUpperCase()}
+              <RiLoopLeftLine className='ml-0.5 h-3 w-3' />
+            </div>
+          </div>
+        )
+      }
+      {
+        conditions.map(condition => (
+          <ConditionItem
+            key={condition.id}
+            className={conditionItemClassName}
+            disabled={disabled}
+            conditionId={isSubVariable ? conditionId! : condition.id}
+            condition={condition}
+            isValueFieldShort={isValueFieldShort}
+            onUpdateCondition={onUpdateCondition}
+            onRemoveCondition={onRemoveCondition}
+            onAddSubVariableCondition={onAddSubVariableCondition}
+            onRemoveSubVariableCondition={onRemoveSubVariableCondition}
+            onUpdateSubVariableCondition={onUpdateSubVariableCondition}
+            onToggleSubVariableConditionLogicalOperator={onToggleSubVariableConditionLogicalOperator}
+            nodeId={nodeId}
+            availableNodes={availableNodes}
+            numberVariables={numberVariables}
+            isSubVariableKey={isSubVariable}
+            availableVars={availableVars}
+          />
+        ))
+      }
+    </div>
+  )
+}
+
+export default ConditionList

dify/web/app/components/workflow/nodes/loop/components/condition-number-input.tsx

@@ -0,0 +1,168 @@
+import {
+  memo,
+  useCallback,
+  useState,
+} from 'react'
+import { useTranslation } from 'react-i18next'
+import { RiArrowDownSLine } from '@remixicon/react'
+import { capitalize } from 'lodash-es'
+import { useBoolean } from 'ahooks'
+import { VarType as NumberVarType } from '../../tool/types'
+import VariableTag from '../../_base/components/variable-tag'
+import {
+  PortalToFollowElem,
+  PortalToFollowElemContent,
+  PortalToFollowElemTrigger,
+} from '@/app/components/base/portal-to-follow-elem'
+import Button from '@/app/components/base/button'
+import cn from '@/utils/classnames'
+import VarReferenceVars from '@/app/components/workflow/nodes/_base/components/variable/var-reference-vars'
+import type {
+  NodeOutPutVar,
+  ValueSelector,
+} from '@/app/components/workflow/types'
+import { VarType } from '@/app/components/workflow/types'
+import { variableTransformer } from '@/app/components/workflow/utils'
+import { Variable02 } from '@/app/components/base/icons/src/vender/solid/development'
+
+const options = [
+  NumberVarType.variable,
+  NumberVarType.constant,
+]
+
+type ConditionNumberInputProps = {
+  numberVarType?: NumberVarType
+  onNumberVarTypeChange: (v: NumberVarType) => void
+  value: string
+  onValueChange: (v: string) => void
+  variables: NodeOutPutVar[]
+  isShort?: boolean
+  unit?: string
+}
+const ConditionNumberInput = ({
+  numberVarType = NumberVarType.constant,
+  onNumberVarTypeChange,
+  value,
+  onValueChange,
+  variables,
+  isShort,
+  unit,
+}: ConditionNumberInputProps) => {
+  const { t } = useTranslation()
+  const [numberVarTypeVisible, setNumberVarTypeVisible] = useState(false)
+  const [variableSelectorVisible, setVariableSelectorVisible] = useState(false)
+  const [isFocus, {
+    setTrue: setFocus,
+    setFalse: setBlur,
+  }] = useBoolean()
+
+  const handleSelectVariable = useCallback((valueSelector: ValueSelector) => {
+    onValueChange(variableTransformer(valueSelector) as string)
+    setVariableSelectorVisible(false)
+  }, [onValueChange])
+
+  return (
+    <div className='flex cursor-pointer items-center'>
+      <PortalToFollowElem
+        open={numberVarTypeVisible}
+        onOpenChange={setNumberVarTypeVisible}
+        placement='bottom-start'
+        offset={{ mainAxis: 2, crossAxis: 0 }}
+      >
+        <PortalToFollowElemTrigger onClick={() => setNumberVarTypeVisible(v => !v)}>
+          <Button
+            className='shrink-0'
+            variant='ghost'
+            size='small'
+          >
+            {capitalize(numberVarType)}
+            <RiArrowDownSLine className='ml-[1px] h-3.5 w-3.5' />
+          </Button>
+        </PortalToFollowElemTrigger>
+        <PortalToFollowElemContent className='z-[1000]'>
+          <div className='w-[112px] rounded-xl border-[0.5px] border-components-panel-border bg-components-panel-bg-blur p-1 shadow-lg'>
+            {
+              options.map(option => (
+                <div
+                  key={option}
+                  className={cn(
+                    'flex h-7 cursor-pointer items-center rounded-md px-3 hover:bg-state-base-hover',
+                    'text-[13px] font-medium text-text-secondary',
+                    numberVarType === option && 'bg-state-base-hover',
+                  )}
+                  onClick={() => {
+                    onNumberVarTypeChange(option)
+                    setNumberVarTypeVisible(false)
+                  }}
+                >
+                  {capitalize(option)}
+                </div>
+              ))
+            }
+          </div>
+        </PortalToFollowElemContent>
+      </PortalToFollowElem>
+      <div className='mx-1 h-4 w-[1px] bg-divider-regular'></div>
+      <div className='ml-0.5 w-0 grow'>
+        {
+          numberVarType === NumberVarType.variable && (
+            <PortalToFollowElem
+              open={variableSelectorVisible}
+              onOpenChange={setVariableSelectorVisible}
+              placement='bottom-start'
+              offset={{ mainAxis: 2, crossAxis: 0 }}
+            >
+              <PortalToFollowElemTrigger
+                className='w-full'
+                onClick={() => setVariableSelectorVisible(v => !v)}>
+                {
+                  value && (
+                    <VariableTag
+                      valueSelector={variableTransformer(value) as string[]}
+                      varType={VarType.number}
+                      isShort={isShort}
+                    />
+                  )
+                }
+                {
+                  !value && (
+                    <div className='flex h-6 items-center p-1 text-[13px] text-components-input-text-placeholder'>
+                      <Variable02 className='mr-1 h-4 w-4 shrink-0' />
+                      <div className='w-0 grow truncate'>{t('workflow.nodes.ifElse.selectVariable')}</div>
+                    </div>
+                  )
+                }
+              </PortalToFollowElemTrigger>
+              <PortalToFollowElemContent className='z-[1000]'>
+                <div className={cn('w-[296px] rounded-lg border-[0.5px] border-components-panel-border bg-components-panel-bg-blur pt-1 shadow-lg', isShort && 'w-[200px]')}>
+                  <VarReferenceVars
+                    vars={variables}
+                    onChange={handleSelectVariable}
+                  />
+                </div>
+              </PortalToFollowElemContent>
+            </PortalToFollowElem>
+          )
+        }
+        {
+          numberVarType === NumberVarType.constant && (
+            <div className=' relative'>
+              <input
+                className={cn('block w-full appearance-none bg-transparent px-2 text-[13px] text-components-input-text-filled outline-none placeholder:text-components-input-text-placeholder', unit && 'pr-6')}
+                type='number'
+                value={value}
+                onChange={e => onValueChange(e.target.value)}
+                placeholder={t('workflow.nodes.ifElse.enterValue') || ''}
+                onFocus={setFocus}
+                onBlur={setBlur}
+              />
+              {!isFocus && unit && <div className='system-sm-regular absolute right-2 top-[50%] translate-y-[-50%] text-text-tertiary'>{unit}</div>}
+            </div>
+          )
+        }
+      </div>
+    </div>
+  )
+}
+
+export default memo(ConditionNumberInput)

dify/web/app/components/workflow/nodes/loop/components/condition-value.tsx

@@ -0,0 +1,87 @@
+import {
+  memo,
+  useMemo,
+} from 'react'
+import { useTranslation } from 'react-i18next'
+import { ComparisonOperator } from '../types'
+import {
+  comparisonOperatorNotRequireValue,
+  isComparisonOperatorNeedTranslate,
+} from '../utils'
+import { FILE_TYPE_OPTIONS, TRANSFER_METHOD } from './../default'
+import { isSystemVar } from '@/app/components/workflow/nodes/_base/components/variable/utils'
+import {
+  VariableLabelInNode,
+} from '@/app/components/workflow/nodes/_base/components/variable/variable-label'
+
+type ConditionValueProps = {
+  variableSelector: string[]
+  labelName?: string
+  operator: ComparisonOperator
+  value: string | string[]
+}
+const ConditionValue = ({
+  variableSelector,
+  labelName: _labelName,
+  operator,
+  value,
+}: ConditionValueProps) => {
+  const { t } = useTranslation()
+  const operatorName = isComparisonOperatorNeedTranslate(operator) ? t(`workflow.nodes.ifElse.comparisonOperator.${operator}`) : operator
+  const notHasValue = comparisonOperatorNotRequireValue(operator)
+  const formatValue = useMemo(() => {
+    if (notHasValue)
+      return ''
+
+    if (Array.isArray(value)) // transfer method
+      return value[0]
+
+    return value.replace(/{{#([^#]*)#}}/g, (a, b) => {
+      const arr: string[] = b.split('.')
+      if (isSystemVar(arr))
+        return `{{${b}}}`
+
+      return `{{${arr.slice(1).join('.')}}}`
+    })
+  }, [notHasValue, value])
+
+  const isSelect = operator === ComparisonOperator.in || operator === ComparisonOperator.notIn
+  const selectName = useMemo(() => {
+    if (isSelect) {
+      const name = [...FILE_TYPE_OPTIONS, ...TRANSFER_METHOD].filter(item => item.value === (Array.isArray(value) ? value[0] : value))[0]
+      return name
+        ? t(`workflow.nodes.ifElse.optionName.${name.i18nKey}`).replace(/{{#([^#]*)#}}/g, (a, b) => {
+          const arr: string[] = b.split('.')
+          if (isSystemVar(arr))
+            return `{{${b}}}`
+
+          return `{{${arr.slice(1).join('.')}}}`
+        })
+        : ''
+    }
+    return ''
+  }, [isSelect, t, value])
+
+  return (
+    <div className='flex h-6 items-center rounded-md bg-workflow-block-parma-bg px-1'>
+      <VariableLabelInNode
+        className='w-0 grow'
+        variables={variableSelector}
+        notShowFullPath
+      />
+      <div
+        className='mx-1 shrink-0 text-xs font-medium text-text-primary'
+        title={operatorName}
+      >
+        {operatorName}
+      </div>
+      {
+        !notHasValue && (
+          <div className='truncate text-xs text-text-secondary' title={formatValue}>{isSelect ? selectName : formatValue}</div>
+        )
+      }
+    </div>
+  )
+}
+
+export default memo(ConditionValue)

dify/web/app/components/workflow/nodes/loop/components/condition-wrap.tsx

@@ -0,0 +1,146 @@
+'use client'
+import type { FC } from 'react'
+import React, { useCallback } from 'react'
+import { useTranslation } from 'react-i18next'
+import {
+  RiAddLine,
+} from '@remixicon/react'
+import type { Condition, HandleAddCondition, HandleAddSubVariableCondition, HandleRemoveCondition, HandleToggleConditionLogicalOperator, HandleToggleSubVariableConditionLogicalOperator, HandleUpdateCondition, HandleUpdateSubVariableCondition, LogicalOperator, handleRemoveSubVariableCondition } from '../types'
+import type { Node, NodeOutPutVar, Var } from '../../../types'
+import { VarType } from '../../../types'
+import { useGetAvailableVars } from '../../variable-assigner/hooks'
+import ConditionList from './condition-list'
+import ConditionAdd from './condition-add'
+import { SUB_VARIABLES } from './../default'
+import cn from '@/utils/classnames'
+import Button from '@/app/components/base/button'
+import { PortalSelect as Select } from '@/app/components/base/select'
+
+type Props = {
+  isSubVariable?: boolean
+  conditionId?: string
+  conditions: Condition[]
+  logicalOperator: LogicalOperator | undefined
+  readOnly: boolean
+  handleAddCondition?: HandleAddCondition
+  handleRemoveCondition?: HandleRemoveCondition
+  handleUpdateCondition?: HandleUpdateCondition
+  handleToggleConditionLogicalOperator?: HandleToggleConditionLogicalOperator
+  handleAddSubVariableCondition?: HandleAddSubVariableCondition
+  handleRemoveSubVariableCondition?: handleRemoveSubVariableCondition
+  handleUpdateSubVariableCondition?: HandleUpdateSubVariableCondition
+  handleToggleSubVariableConditionLogicalOperator?: HandleToggleSubVariableConditionLogicalOperator
+  nodeId: string
+  availableNodes: Node[]
+  availableVars: NodeOutPutVar[]
+}
+
+const ConditionWrap: FC<Props> = ({
+  isSubVariable,
+  conditionId,
+  conditions,
+  logicalOperator,
+  nodeId: id = '',
+  readOnly,
+  handleUpdateCondition,
+  handleAddCondition,
+  handleRemoveCondition,
+  handleToggleConditionLogicalOperator,
+  handleAddSubVariableCondition,
+  handleRemoveSubVariableCondition,
+  handleUpdateSubVariableCondition,
+  handleToggleSubVariableConditionLogicalOperator,
+  availableNodes = [],
+  availableVars = [],
+}) => {
+  const { t } = useTranslation()
+
+  const getAvailableVars = useGetAvailableVars()
+
+  const filterNumberVar = useCallback((varPayload: Var) => {
+    return varPayload.type === VarType.number
+  }, [])
+
+  const subVarOptions = SUB_VARIABLES.map(item => ({
+    name: item,
+    value: item,
+  }))
+
+  if (!conditions)
+    return <div />
+
+  return (
+    <>
+      <div>
+        <div
+          className={cn(
+            'group relative rounded-[10px] bg-components-panel-bg',
+            !isSubVariable && 'min-h-[40px] px-3 py-1 ',
+            isSubVariable && 'px-1 py-2',
+          )}
+        >
+          {
+            conditions && !!conditions.length && (
+              <div className='mb-2'>
+                <ConditionList
+                  disabled={readOnly}
+                  conditionId={conditionId}
+                  conditions={conditions}
+                  logicalOperator={logicalOperator}
+                  onUpdateCondition={handleUpdateCondition}
+                  onRemoveCondition={handleRemoveCondition}
+                  onToggleConditionLogicalOperator={handleToggleConditionLogicalOperator}
+                  nodeId={id}
+                  availableNodes={availableNodes}
+                  numberVariables={getAvailableVars(id, '', filterNumberVar)}
+                  onAddSubVariableCondition={handleAddSubVariableCondition}
+                  onRemoveSubVariableCondition={handleRemoveSubVariableCondition}
+                  onUpdateSubVariableCondition={handleUpdateSubVariableCondition}
+                  onToggleSubVariableConditionLogicalOperator={handleToggleSubVariableConditionLogicalOperator}
+                  isSubVariable={isSubVariable}
+                  availableVars={availableVars}
+                />
+              </div>
+            )
+          }
+
+          <div className={cn(
+            'flex items-center justify-between pr-[30px]',
+            !conditions.length && !isSubVariable && 'mt-1',
+            !conditions.length && isSubVariable && 'mt-2',
+            conditions.length > 1 && !isSubVariable && 'ml-[60px]',
+          )}>
+            {isSubVariable
+              ? (
+                <Select
+                  popupInnerClassName='w-[165px] max-h-none'
+                  onSelect={value => handleAddSubVariableCondition?.(conditionId!, value.value as string)}
+                  items={subVarOptions}
+                  value=''
+                  renderTrigger={() => (
+                    <Button
+                      size='small'
+                      disabled={readOnly}
+                    >
+                      <RiAddLine className='mr-1 h-3.5 w-3.5' />
+                      {t('workflow.nodes.ifElse.addSubVariable')}
+                    </Button>
+                  )}
+                  hideChecked
+                />
+              )
+              : (
+                <ConditionAdd
+                  disabled={readOnly}
+                  variables={availableVars}
+                  onSelectVariable={handleAddCondition!}
+                />
+              )}
+          </div>
+        </div>
+      </div>
+    </>
+  )
+}
+
+export default React.memo(ConditionWrap)

dify/web/app/components/workflow/nodes/loop/components/loop-variables/empty.tsx

@@ -0,0 +1,13 @@
+import { useTranslation } from 'react-i18next'
+
+const Empty = () => {
+  const { t } = useTranslation()
+
+  return (
+    <div className='system-xs-regular flex h-10 items-center justify-center rounded-[10px] bg-background-section text-text-tertiary'>
+      {t('workflow.nodes.loop.setLoopVariables')}
+    </div>
+  )
+}
+
+export default Empty

dify/web/app/components/workflow/nodes/loop/components/loop-variables/form-item.tsx

@@ -0,0 +1,146 @@
+import {
+  useCallback,
+  useMemo,
+} from 'react'
+import { useTranslation } from 'react-i18next'
+import VarReferencePicker from '@/app/components/workflow/nodes/_base/components/variable/var-reference-picker'
+import Input from '@/app/components/base/input'
+import Textarea from '@/app/components/base/textarea'
+import CodeEditor from '@/app/components/workflow/nodes/_base/components/editor/code-editor'
+import { CodeLanguage } from '@/app/components/workflow/nodes/code/types'
+import type {
+  LoopVariable,
+} from '@/app/components/workflow/nodes/loop/types'
+import type {
+  Var,
+} from '@/app/components/workflow/types'
+import {
+  ValueType,
+  VarType,
+} from '@/app/components/workflow/types'
+import BoolValue from '@/app/components/workflow/panel/chat-variable-panel/components/bool-value'
+
+import {
+  arrayBoolPlaceholder,
+  arrayNumberPlaceholder,
+  arrayObjectPlaceholder,
+  arrayStringPlaceholder,
+  objectPlaceholder,
+} from '@/app/components/workflow/panel/chat-variable-panel/utils'
+import ArrayBoolList from '@/app/components/workflow/panel/chat-variable-panel/components/array-bool-list'
+
+type FormItemProps = {
+  nodeId: string
+  item: LoopVariable
+  onChange: (value: any) => void
+}
+const FormItem = ({
+  nodeId,
+  item,
+  onChange,
+}: FormItemProps) => {
+  const { t } = useTranslation()
+  const { value_type, var_type, value } = item
+
+  const handleInputChange = useCallback((e: any) => {
+    onChange(e.target.value)
+  }, [onChange])
+
+  const handleChange = useCallback((value: any) => {
+    onChange(value)
+  }, [onChange])
+
+  const filterVar = useCallback((variable: Var) => {
+    return variable.type === var_type
+  }, [var_type])
+
+  const editorMinHeight = useMemo(() => {
+    if (var_type === VarType.arrayObject)
+      return '240px'
+    return '120px'
+  }, [var_type])
+  const placeholder = useMemo(() => {
+    if (var_type === VarType.arrayString)
+      return arrayStringPlaceholder
+    if (var_type === VarType.arrayNumber)
+      return arrayNumberPlaceholder
+    if (var_type === VarType.arrayObject)
+      return arrayObjectPlaceholder
+    if (var_type === VarType.arrayBoolean)
+      return arrayBoolPlaceholder
+    return objectPlaceholder
+  }, [var_type])
+
+  return (
+    <div>
+      {
+        value_type === ValueType.variable && (
+          <VarReferencePicker
+            readonly={false}
+            nodeId={nodeId}
+            isShowNodeName
+            value={value}
+            onChange={handleChange}
+            filterVar={filterVar}
+            placeholder={t('workflow.nodes.assigner.setParameter') as string}
+          />
+        )
+      }
+      {
+        value_type === ValueType.constant && var_type === VarType.string && (
+          <Textarea
+            value={value}
+            onChange={handleInputChange}
+            className='min-h-12 w-full'
+          />
+        )
+      }
+      {
+        value_type === ValueType.constant && var_type === VarType.number && (
+          <Input
+            type="number"
+            value={value}
+            onChange={handleInputChange}
+            className='w-full'
+          />
+        )
+      }
+      {
+        value_type === ValueType.constant && var_type === VarType.boolean && (
+          <BoolValue
+            value={value}
+            onChange={handleChange}
+          />
+        )
+      }
+      {
+        value_type === ValueType.constant
+        && (var_type === VarType.object || var_type === VarType.arrayString || var_type === VarType.arrayNumber || var_type === VarType.arrayObject)
+        && (
+          <div className='w-full rounded-[10px] bg-components-input-bg-normal py-2 pl-3 pr-1' style={{ height: editorMinHeight }}>
+            <CodeEditor
+              value={value}
+              isExpand
+              noWrapper
+              language={CodeLanguage.json}
+              onChange={handleChange}
+              className='w-full'
+              placeholder={<div className='whitespace-pre'>{placeholder}</div>}
+            />
+          </div>
+        )
+      }
+      {
+        value_type === ValueType.constant && var_type === VarType.arrayBoolean && (
+          <ArrayBoolList
+            className='mt-2'
+            list={value || [false]}
+            onChange={handleChange}
+          />
+        )
+      }
+    </div>
+  )
+}
+
+export default FormItem

dify/web/app/components/workflow/nodes/loop/components/loop-variables/index.tsx

@@ -0,0 +1,28 @@
+import Empty from './empty'
+import Item from './item'
+import type {
+  LoopVariable,
+  LoopVariablesComponentShape,
+} from '@/app/components/workflow/nodes/loop/types'
+
+type LoopVariableProps = {
+  variables?: LoopVariable[]
+} & LoopVariablesComponentShape
+
+const LoopVariableComponent = ({
+  variables = [],
+  ...restProps
+}: LoopVariableProps) => {
+  if (!variables.length)
+    return <Empty />
+
+  return variables.map(variable => (
+    <Item
+      key={variable.id}
+      item={variable}
+      {...restProps}
+    />
+  ))
+}
+
+export default LoopVariableComponent

dify/web/app/components/workflow/nodes/loop/components/loop-variables/input-mode-selec.tsx

@@ -0,0 +1,37 @@
+import { useTranslation } from 'react-i18next'
+import PureSelect from '@/app/components/base/select/pure'
+
+type InputModeSelectProps = {
+  value?: string
+  onChange: (value: string) => void
+}
+const InputModeSelect = ({
+  value,
+  onChange,
+}: InputModeSelectProps) => {
+  const { t } = useTranslation()
+  const options = [
+    {
+      label: 'Variable',
+      value: 'variable',
+    },
+    {
+      label: 'Constant',
+      value: 'constant',
+    },
+  ]
+
+  return (
+    <PureSelect
+      options={options}
+      value={value}
+      onChange={onChange}
+      popupProps={{
+        title: t('workflow.nodes.loop.inputMode'),
+        className: 'w-[132px]',
+      }}
+    />
+  )
+}
+
+export default InputModeSelect

dify/web/app/components/workflow/nodes/loop/components/loop-variables/item.tsx

@@ -0,0 +1,110 @@
+import { useCallback } from 'react'
+import { RiDeleteBinLine } from '@remixicon/react'
+import { useTranslation } from 'react-i18next'
+import InputModeSelect from './input-mode-selec'
+import VariableTypeSelect from './variable-type-select'
+import FormItem from './form-item'
+import ActionButton from '@/app/components/base/action-button'
+import Input from '@/app/components/base/input'
+import type {
+  LoopVariable,
+  LoopVariablesComponentShape,
+} from '@/app/components/workflow/nodes/loop/types'
+import { checkKeys, replaceSpaceWithUnderscoreInVarNameInput } from '@/utils/var'
+import Toast from '@/app/components/base/toast'
+import { ValueType, VarType } from '@/app/components/workflow/types'
+
+type ItemProps = {
+  item: LoopVariable
+} & LoopVariablesComponentShape
+const Item = ({
+  nodeId,
+  item,
+  handleRemoveLoopVariable,
+  handleUpdateLoopVariable,
+}: ItemProps) => {
+  const { t } = useTranslation()
+
+  const checkVariableName = (value: string) => {
+    const { isValid, errorMessageKey } = checkKeys([value], false)
+    if (!isValid) {
+      Toast.notify({
+        type: 'error',
+        message: t(`appDebug.varKeyError.${errorMessageKey}`, { key: t('workflow.env.modal.name') }),
+      })
+      return false
+    }
+    return true
+  }
+  const handleUpdateItemLabel = useCallback((e: any) => {
+    replaceSpaceWithUnderscoreInVarNameInput(e.target)
+    if (!!e.target.value && !checkVariableName(e.target.value))
+      return
+    handleUpdateLoopVariable(item.id, { label: e.target.value })
+  }, [item.id, handleUpdateLoopVariable])
+
+  const getDefaultValue = useCallback((varType: VarType, valueType: ValueType) => {
+    if(valueType === ValueType.variable)
+      return undefined
+    switch (varType) {
+      case VarType.boolean:
+        return false
+      case VarType.arrayBoolean:
+        return [false]
+      default:
+        return undefined
+    }
+  }, [])
+
+  const handleUpdateItemVarType = useCallback((value: any) => {
+    handleUpdateLoopVariable(item.id, { var_type: value, value: getDefaultValue(value, item.value_type) })
+  }, [item.id, handleUpdateLoopVariable])
+
+  const handleUpdateItemValueType = useCallback((value: any) => {
+    handleUpdateLoopVariable(item.id, { value_type: value, value: getDefaultValue(item.var_type, value) })
+  }, [item.id, handleUpdateLoopVariable])
+
+  const handleUpdateItemValue = useCallback((value: any) => {
+    handleUpdateLoopVariable(item.id, { value })
+  }, [item.id, handleUpdateLoopVariable])
+
+  return (
+    <div className='mb-4 flex last-of-type:mb-0'>
+      <div className='w-0 grow'>
+        <div className='mb-1 grid grid-cols-3 gap-1'>
+          <Input
+            value={item.label}
+            onChange={handleUpdateItemLabel}
+            onBlur={e => checkVariableName(e.target.value)}
+            autoFocus={!item.label}
+            placeholder={t('workflow.nodes.loop.variableName')}
+          />
+          <VariableTypeSelect
+            value={item.var_type}
+            onChange={handleUpdateItemVarType}
+          />
+          <InputModeSelect
+            value={item.value_type}
+            onChange={handleUpdateItemValueType}
+          />
+        </div>
+        <div>
+          <FormItem
+            nodeId={nodeId}
+            item={item}
+            onChange={handleUpdateItemValue}
+          />
+        </div>
+      </div>
+      <ActionButton
+        className='shrink-0'
+        size='l'
+        onClick={() => handleRemoveLoopVariable(item.id)}
+      >
+        <RiDeleteBinLine className='h-4 w-4 text-text-tertiary' />
+      </ActionButton>
+    </div>
+  )
+}
+
+export default Item

dify/web/app/components/workflow/nodes/loop/components/loop-variables/variable-type-select.tsx

@@ -0,0 +1,59 @@
+import PureSelect from '@/app/components/base/select/pure'
+import { VarType } from '@/app/components/workflow/types'
+
+type VariableTypeSelectProps = {
+  value?: string
+  onChange: (value: string) => void
+}
+const VariableTypeSelect = ({
+  value,
+  onChange,
+}: VariableTypeSelectProps) => {
+  const options = [
+    {
+      label: 'String',
+      value: VarType.string,
+    },
+    {
+      label: 'Number',
+      value: VarType.number,
+    },
+    {
+      label: 'Object',
+      value: VarType.object,
+    },
+    {
+      label: 'Boolean',
+      value: VarType.boolean,
+    },
+    {
+      label: 'Array[string]',
+      value: VarType.arrayString,
+    },
+    {
+      label: 'Array[number]',
+      value: VarType.arrayNumber,
+    },
+    {
+      label: 'Array[object]',
+      value: VarType.arrayObject,
+    },
+    {
+      label: 'Array[boolean]',
+      value: VarType.arrayBoolean,
+    },
+  ]
+
+  return (
+    <PureSelect
+      options={options}
+      value={value}
+      onChange={onChange}
+      popupProps={{
+        className: 'w-[132px]',
+      }}
+    />
+  )
+}
+
+export default VariableTypeSelect

dify/web/app/components/workflow/nodes/loop/default.ts

@@ -0,0 +1,94 @@
+import { VarType } from '../../types'
+import type { NodeDefault } from '../../types'
+import { ComparisonOperator, LogicalOperator, type LoopNodeType } from './types'
+import { isEmptyRelatedOperator } from './utils'
+import { TransferMethod } from '@/types/app'
+import { LOOP_NODE_MAX_COUNT } from '@/config'
+import { genNodeMetaData } from '@/app/components/workflow/utils'
+import { BlockEnum } from '@/app/components/workflow/types'
+import { BlockClassificationEnum } from '@/app/components/workflow/block-selector/types'
+const i18nPrefix = 'workflow.errorMsg'
+
+const metaData = genNodeMetaData({
+  classification: BlockClassificationEnum.Logic,
+  sort: 3,
+  type: BlockEnum.Loop,
+  author: 'AICT-Team',
+  isTypeFixed: true,
+})
+const nodeDefault: NodeDefault<LoopNodeType> = {
+  metaData,
+  defaultValue: {
+    start_node_id: '',
+    break_conditions: [],
+    loop_count: 10,
+    _children: [],
+    logical_operator: LogicalOperator.and,
+  },
+  checkValid(payload: LoopNodeType, t: any) {
+    let errorMessages = ''
+
+    payload.loop_variables?.forEach((variable) => {
+      if (!variable.label)
+        errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t(`${i18nPrefix}.fields.variable`) })
+    })
+
+    payload.break_conditions!.forEach((condition) => {
+      if (!errorMessages && (!condition.variable_selector || condition.variable_selector.length === 0))
+        errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t(`${i18nPrefix}.fields.variable`) })
+      if (!errorMessages && !condition.comparison_operator)
+        errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t('workflow.nodes.ifElse.operator') })
+      if (!errorMessages) {
+        if (condition.sub_variable_condition
+          && ![ComparisonOperator.empty, ComparisonOperator.notEmpty].includes(condition.comparison_operator!)) {
+          const isSet = condition.sub_variable_condition.conditions.every((c) => {
+            if (!c.comparison_operator)
+              return false
+
+            if (isEmptyRelatedOperator(c.comparison_operator!))
+              return true
+
+            return !!c.value
+          })
+
+          if (!isSet)
+            errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t(`${i18nPrefix}.fields.variableValue`) })
+        }
+        else {
+          if (!isEmptyRelatedOperator(condition.comparison_operator!) && (condition.varType === VarType.boolean ? condition.value === undefined : !condition.value))
+            errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t(`${i18nPrefix}.fields.variableValue`) })
+        }
+      }
+    })
+
+    if (!errorMessages && (
+      Number.isNaN(Number(payload.loop_count))
+      || !Number.isInteger(Number(payload.loop_count))
+      || payload.loop_count < 1
+      || payload.loop_count > LOOP_NODE_MAX_COUNT
+    ))
+      errorMessages = t('workflow.nodes.loop.loopMaxCountError', { maxCount: LOOP_NODE_MAX_COUNT })
+
+    return {
+      isValid: !errorMessages,
+      errorMessage: errorMessages,
+    }
+  },
+}
+
+export const FILE_TYPE_OPTIONS = [
+  { value: 'image', i18nKey: 'image' },
+  { value: 'document', i18nKey: 'doc' },
+  { value: 'audio', i18nKey: 'audio' },
+  { value: 'video', i18nKey: 'video' },
+]
+
+export const TRANSFER_METHOD = [
+  { value: TransferMethod.local_file, i18nKey: 'localUpload' },
+  { value: TransferMethod.remote_url, i18nKey: 'url' },
+]
+
+export const SUB_VARIABLES = ['type', 'size', 'name', 'url', 'extension', 'mime_type', 'transfer_method', 'related_id']
+export const OUTPUT_FILE_SUB_VARIABLES = SUB_VARIABLES.filter(key => key !== 'transfer_method')
+
+export default nodeDefault

dify/web/app/components/workflow/nodes/loop/insert-block.tsx

@@ -0,0 +1,61 @@
+import {
+  memo,
+  useCallback,
+  useState,
+} from 'react'
+import cn from 'classnames'
+import { useNodesInteractions } from '../../hooks'
+import type {
+  BlockEnum,
+  OnSelectBlock,
+} from '../../types'
+import BlockSelector from '../../block-selector'
+
+type InsertBlockProps = {
+  startNodeId: string
+  availableBlocksTypes: BlockEnum[]
+}
+const InsertBlock = ({
+  startNodeId,
+  availableBlocksTypes,
+}: InsertBlockProps) => {
+  const [open, setOpen] = useState(false)
+  const { handleNodeAdd } = useNodesInteractions()
+
+  const handleOpenChange = useCallback((v: boolean) => {
+    setOpen(v)
+  }, [])
+  const handleInsert = useCallback<OnSelectBlock>((nodeType, pluginDefaultValue) => {
+    handleNodeAdd(
+      {
+        nodeType,
+        pluginDefaultValue,
+      },
+      {
+        nextNodeId: startNodeId,
+        nextNodeTargetHandle: 'target',
+      },
+    )
+  }, [startNodeId, handleNodeAdd])
+
+  return (
+    <div
+      className={cn(
+        'nopan nodrag',
+        'absolute left-1/2 top-1/2 hidden -translate-x-1/2 -translate-y-1/2 group-hover/insert:block',
+        open && '!block',
+      )}
+    >
+      <BlockSelector
+        open={open}
+        onOpenChange={handleOpenChange}
+        asChild
+        onSelect={handleInsert}
+        availableBlocksTypes={availableBlocksTypes}
+        triggerClassName={() => 'hover:scale-125 transition-all'}
+      />
+    </div>
+  )
+}
+
+export default memo(InsertBlock)

dify/web/app/components/workflow/nodes/loop/node.tsx

@@ -0,0 +1,61 @@
+import type { FC } from 'react'
+import {
+  memo,
+  useEffect,
+} from 'react'
+import {
+  Background,
+  useNodesInitialized,
+  useViewport,
+} from 'reactflow'
+import { LoopStartNodeDumb } from '../loop-start'
+import { useNodeLoopInteractions } from './use-interactions'
+import type { LoopNodeType } from './types'
+import AddBlock from './add-block'
+import cn from '@/utils/classnames'
+
+import type { NodeProps } from '@/app/components/workflow/types'
+
+const Node: FC<NodeProps<LoopNodeType>> = ({
+  id,
+  data,
+}) => {
+  const { zoom } = useViewport()
+  const nodesInitialized = useNodesInitialized()
+  const { handleNodeLoopRerender } = useNodeLoopInteractions()
+
+  useEffect(() => {
+    if (nodesInitialized)
+      handleNodeLoopRerender(id)
+  }, [nodesInitialized, id, handleNodeLoopRerender])
+
+  return (
+    <div className={cn(
+      'relative h-full min-h-[90px] w-full min-w-[240px] rounded-2xl bg-workflow-canvas-workflow-bg',
+    )}>
+      <Background
+        id={`loop-background-${id}`}
+        className='!z-0 rounded-2xl'
+        gap={[14 / zoom, 14 / zoom]}
+        size={2 / zoom}
+        color='var(--color-workflow-canvas-workflow-dot-color)'
+      />
+      {
+        data._isCandidate && (
+          <LoopStartNodeDumb />
+        )
+      }
+      {
+        data._children!.length === 1 && (
+          <AddBlock
+            loopNodeId={id}
+            loopNodeData={data}
+          />
+        )
+      }
+
+    </div>
+  )
+}
+
+export default memo(Node)

dify/web/app/components/workflow/nodes/loop/panel.tsx

@@ -0,0 +1,118 @@
+import type { FC } from 'react'
+import React from 'react'
+import { useTranslation } from 'react-i18next'
+import { RiAddLine } from '@remixicon/react'
+import Split from '../_base/components/split'
+import InputNumberWithSlider from '../_base/components/input-number-with-slider'
+import type { LoopNodeType } from './types'
+import useConfig from './use-config'
+import ConditionWrap from './components/condition-wrap'
+import LoopVariable from './components/loop-variables'
+import type { NodePanelProps } from '@/app/components/workflow/types'
+import Field from '@/app/components/workflow/nodes/_base/components/field'
+
+import { LOOP_NODE_MAX_COUNT } from '@/config'
+
+const i18nPrefix = 'workflow.nodes.loop'
+
+const Panel: FC<NodePanelProps<LoopNodeType>> = ({
+  id,
+  data,
+}) => {
+  const { t } = useTranslation()
+
+  const {
+    readOnly,
+    inputs,
+    childrenNodeVars,
+    loopChildrenNodes,
+    handleAddCondition,
+    handleUpdateCondition,
+    handleRemoveCondition,
+    handleToggleConditionLogicalOperator,
+    handleAddSubVariableCondition,
+    handleRemoveSubVariableCondition,
+    handleUpdateSubVariableCondition,
+    handleToggleSubVariableConditionLogicalOperator,
+    handleUpdateLoopCount,
+    handleAddLoopVariable,
+    handleRemoveLoopVariable,
+    handleUpdateLoopVariable,
+  } = useConfig(id, data)
+
+  return (
+    <div className='mt-2'>
+      <div>
+        <Field
+          title={<div className='pl-3'>{t('workflow.nodes.loop.loopVariables')}</div>}
+          operations={
+            <div
+              className='mr-4 flex h-5 w-5 cursor-pointer items-center justify-center'
+              onClick={handleAddLoopVariable}
+            >
+              <RiAddLine className='h-4 w-4 text-text-tertiary' />
+            </div>
+          }
+        >
+          <div className='px-4'>
+            <LoopVariable
+              variables={inputs.loop_variables}
+              nodeId={id}
+              handleRemoveLoopVariable={handleRemoveLoopVariable}
+              handleUpdateLoopVariable={handleUpdateLoopVariable}
+            />
+          </div>
+        </Field>
+        <Split className='my-2' />
+        <Field
+          title={<div className='pl-3'>{t(`${i18nPrefix}.breakCondition`)}</div>}
+          tooltip={t(`${i18nPrefix}.breakConditionTip`)}
+        >
+          <ConditionWrap
+            nodeId={id}
+            readOnly={readOnly}
+            handleAddCondition={handleAddCondition}
+            handleRemoveCondition={handleRemoveCondition}
+            handleUpdateCondition={handleUpdateCondition}
+            handleToggleConditionLogicalOperator={handleToggleConditionLogicalOperator}
+            handleAddSubVariableCondition={handleAddSubVariableCondition}
+            handleRemoveSubVariableCondition={handleRemoveSubVariableCondition}
+            handleUpdateSubVariableCondition={handleUpdateSubVariableCondition}
+            handleToggleSubVariableConditionLogicalOperator={handleToggleSubVariableConditionLogicalOperator}
+            availableNodes={loopChildrenNodes}
+            availableVars={childrenNodeVars}
+            conditions={inputs.break_conditions || []}
+            logicalOperator={inputs.logical_operator!}
+          />
+        </Field>
+        <Split className='mt-2' />
+        <div className='mt-2'>
+          <Field
+            title={<div className='pl-3'>{t(`${i18nPrefix}.loopMaxCount`)}</div>}
+          >
+            <div className='px-3 py-2'>
+              <InputNumberWithSlider
+                min={1}
+                max={LOOP_NODE_MAX_COUNT}
+                value={inputs.loop_count}
+                onChange={(val) => {
+                  const roundedVal = Math.round(val)
+                  handleUpdateLoopCount(Number.isNaN(roundedVal) ? 1 : roundedVal)
+                }}
+              />
+            </div>
+          </Field>
+        </div>
+      </div>
+      {/* Error handling for the Loop node is currently not considered. */}
+      {/* <div className='px-4 py-2'>
+        <Field title={t(`${i18nPrefix}.errorResponseMethod`)} >
+          <Select items={responseMethod} defaultValue={inputs.error_handle_mode} onSelect={changeErrorResponseMode} allowSearch={false}>
+          </Select>
+        </Field>
+      </div> */}
+    </div>
+  )
+}
+
+export default React.memo(Panel)

dify/web/app/components/workflow/nodes/loop/types.ts

@@ -0,0 +1,94 @@
+import type { VarType as NumberVarType } from '../tool/types'
+import type {
+  BlockEnum,
+  CommonNodeType,
+  ErrorHandleMode,
+  ValueSelector,
+  ValueType,
+  Var,
+  VarType,
+} from '@/app/components/workflow/types'
+
+export enum LogicalOperator {
+  and = 'and',
+  or = 'or',
+}
+
+export enum ComparisonOperator {
+  contains = 'contains',
+  notContains = 'not contains',
+  startWith = 'start with',
+  endWith = 'end with',
+  is = 'is',
+  isNot = 'is not',
+  empty = 'empty',
+  notEmpty = 'not empty',
+  equal = '=',
+  notEqual = '≠',
+  largerThan = '>',
+  lessThan = '<',
+  largerThanOrEqual = '≥',
+  lessThanOrEqual = '≤',
+  isNull = 'is null',
+  isNotNull = 'is not null',
+  in = 'in',
+  notIn = 'not in',
+  allOf = 'all of',
+  exists = 'exists',
+  notExists = 'not exists',
+}
+
+export type Condition = {
+  id: string
+  varType: VarType
+  variable_selector?: ValueSelector
+  key?: string // sub variable key
+  comparison_operator?: ComparisonOperator
+  value: string | string[] | boolean
+  numberVarType?: NumberVarType
+  sub_variable_condition?: CaseItem
+}
+
+export type CaseItem = {
+  logical_operator: LogicalOperator
+  conditions: Condition[]
+}
+
+export type HandleAddCondition = (valueSelector: ValueSelector, varItem: Var) => void
+export type HandleRemoveCondition = (conditionId: string) => void
+export type HandleUpdateCondition = (conditionId: string, newCondition: Condition) => void
+export type HandleUpdateConditionLogicalOperator = (value: LogicalOperator) => void
+
+export type HandleToggleConditionLogicalOperator = () => void
+
+export type HandleAddSubVariableCondition = (conditionId: string, key?: string) => void
+export type handleRemoveSubVariableCondition = (conditionId: string, subConditionId: string) => void
+export type HandleUpdateSubVariableCondition = (conditionId: string, subConditionId: string, newSubCondition: Condition) => void
+export type HandleToggleSubVariableConditionLogicalOperator = (conditionId: string) => void
+
+export type LoopVariable = {
+  id: string
+  label: string
+  var_type: VarType
+  value_type: ValueType
+  value: any
+}
+export type LoopNodeType = CommonNodeType & {
+  startNodeType?: BlockEnum
+  start_node_id: string
+  loop_id?: string
+  logical_operator?: LogicalOperator
+  break_conditions?: Condition[]
+  loop_count: number
+  error_handle_mode: ErrorHandleMode // how to handle error in the iteration
+  loop_variables?: LoopVariable[]
+}
+
+export type HandleUpdateLoopVariable = (id: string, updateData: Partial<LoopVariable>) => void
+export type HandleRemoveLoopVariable = (id: string) => void
+
+export type LoopVariablesComponentShape = {
+  nodeId: string
+  handleRemoveLoopVariable: HandleRemoveLoopVariable
+  handleUpdateLoopVariable: HandleUpdateLoopVariable
+}

dify/web/app/components/workflow/nodes/loop/use-config.ts

@@ -0,0 +1,253 @@
+import {
+  useCallback,
+  useRef,
+} from 'react'
+import { produce } from 'immer'
+import { v4 as uuid4 } from 'uuid'
+import {
+  useIsChatMode,
+  useNodesReadOnly,
+  useWorkflow,
+} from '../../hooks'
+import { ValueType, VarType } from '../../types'
+import type { ErrorHandleMode, Var } from '../../types'
+import useNodeCrud from '../_base/hooks/use-node-crud'
+import { toNodeOutputVars } from '../_base/components/variable/utils'
+import { getOperators } from './utils'
+import { LogicalOperator } from './types'
+import type {
+  HandleAddCondition,
+  HandleAddSubVariableCondition,
+  HandleRemoveCondition,
+  HandleToggleConditionLogicalOperator,
+  HandleToggleSubVariableConditionLogicalOperator,
+  HandleUpdateCondition,
+  HandleUpdateSubVariableCondition,
+  LoopNodeType,
+} from './types'
+import useIsVarFileAttribute from './use-is-var-file-attribute'
+import { useStore } from '@/app/components/workflow/store'
+import {
+  useAllBuiltInTools,
+  useAllCustomTools,
+  useAllMCPTools,
+  useAllWorkflowTools,
+} from '@/service/use-tools'
+
+const useConfig = (id: string, payload: LoopNodeType) => {
+  const { nodesReadOnly: readOnly } = useNodesReadOnly()
+  const isChatMode = useIsChatMode()
+  const conversationVariables = useStore(s => s.conversationVariables)
+
+  const { inputs, setInputs } = useNodeCrud<LoopNodeType>(id, payload)
+  const inputsRef = useRef(inputs)
+  const handleInputsChange = useCallback((newInputs: LoopNodeType) => {
+    inputsRef.current = newInputs
+    setInputs(newInputs)
+  }, [setInputs])
+
+  const filterInputVar = useCallback((varPayload: Var) => {
+    return [VarType.array, VarType.arrayString, VarType.arrayNumber, VarType.arrayObject, VarType.arrayFile].includes(varPayload.type)
+  }, [])
+
+  // output
+  const { getLoopNodeChildren } = useWorkflow()
+  const loopChildrenNodes = [{ id, data: payload } as any, ...getLoopNodeChildren(id)]
+  const { data: buildInTools } = useAllBuiltInTools()
+  const { data: customTools } = useAllCustomTools()
+  const { data: workflowTools } = useAllWorkflowTools()
+  const { data: mcpTools } = useAllMCPTools()
+  const dataSourceList = useStore(s => s.dataSourceList)
+  const allPluginInfoList = {
+    buildInTools: buildInTools || [],
+    customTools: customTools || [],
+    workflowTools: workflowTools || [],
+    mcpTools: mcpTools || [],
+    dataSourceList: dataSourceList || [],
+  }
+  const childrenNodeVars = toNodeOutputVars(loopChildrenNodes, isChatMode, undefined, [], conversationVariables, [], allPluginInfoList)
+
+  const {
+    getIsVarFileAttribute,
+  } = useIsVarFileAttribute({
+    nodeId: id,
+  })
+
+  const changeErrorResponseMode = useCallback((item: { value: unknown }) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      draft.error_handle_mode = item.value as ErrorHandleMode
+    })
+    handleInputsChange(newInputs)
+  }, [inputs, handleInputsChange])
+
+  const handleAddCondition = useCallback<HandleAddCondition>((valueSelector, varItem) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      if (!draft.break_conditions)
+        draft.break_conditions = []
+
+      draft.break_conditions?.push({
+        id: uuid4(),
+        varType: varItem.type,
+        variable_selector: valueSelector,
+        comparison_operator: getOperators(varItem.type, getIsVarFileAttribute(valueSelector) ? { key: valueSelector.slice(-1)[0] } : undefined)[0],
+        value: varItem.type === VarType.boolean ? 'false' : '',
+      })
+    })
+    handleInputsChange(newInputs)
+  }, [getIsVarFileAttribute, handleInputsChange])
+
+  const handleRemoveCondition = useCallback<HandleRemoveCondition>((conditionId) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      draft.break_conditions = draft.break_conditions?.filter(item => item.id !== conditionId)
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleUpdateCondition = useCallback<HandleUpdateCondition>((conditionId, newCondition) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      const targetCondition = draft.break_conditions?.find(item => item.id === conditionId)
+      if (targetCondition)
+        Object.assign(targetCondition, newCondition)
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleToggleConditionLogicalOperator = useCallback<HandleToggleConditionLogicalOperator>(() => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      draft.logical_operator = draft.logical_operator === LogicalOperator.and ? LogicalOperator.or : LogicalOperator.and
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleAddSubVariableCondition = useCallback<HandleAddSubVariableCondition>((conditionId: string, key?: string) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      const condition = draft.break_conditions?.find(item => item.id === conditionId)
+      if (!condition)
+        return
+      if (!condition?.sub_variable_condition) {
+        condition.sub_variable_condition = {
+          logical_operator: LogicalOperator.and,
+          conditions: [],
+        }
+      }
+      const subVarCondition = condition.sub_variable_condition
+      if (subVarCondition) {
+        if (!subVarCondition.conditions)
+          subVarCondition.conditions = []
+
+        const svcComparisonOperators = getOperators(VarType.string, { key: key || '' })
+
+        subVarCondition.conditions.push({
+          id: uuid4(),
+          key: key || '',
+          varType: VarType.string,
+          comparison_operator: (svcComparisonOperators && svcComparisonOperators.length) ? svcComparisonOperators[0] : undefined,
+          value: '',
+        })
+      }
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleRemoveSubVariableCondition = useCallback((conditionId: string, subConditionId: string) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      const condition = draft.break_conditions?.find(item => item.id === conditionId)
+      if (!condition)
+        return
+      if (!condition?.sub_variable_condition)
+        return
+      const subVarCondition = condition.sub_variable_condition
+      if (subVarCondition)
+        subVarCondition.conditions = subVarCondition.conditions.filter(item => item.id !== subConditionId)
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleUpdateSubVariableCondition = useCallback<HandleUpdateSubVariableCondition>((conditionId, subConditionId, newSubCondition) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      const targetCondition = draft.break_conditions?.find(item => item.id === conditionId)
+      if (targetCondition && targetCondition.sub_variable_condition) {
+        const targetSubCondition = targetCondition.sub_variable_condition.conditions.find(item => item.id === subConditionId)
+        if (targetSubCondition)
+          Object.assign(targetSubCondition, newSubCondition)
+      }
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleToggleSubVariableConditionLogicalOperator = useCallback<HandleToggleSubVariableConditionLogicalOperator>((conditionId) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      const targetCondition = draft.break_conditions?.find(item => item.id === conditionId)
+      if (targetCondition && targetCondition.sub_variable_condition)
+        targetCondition.sub_variable_condition.logical_operator = targetCondition.sub_variable_condition.logical_operator === LogicalOperator.and ? LogicalOperator.or : LogicalOperator.and
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleUpdateLoopCount = useCallback((value: number) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      draft.loop_count = value
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleAddLoopVariable = useCallback(() => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      if (!draft.loop_variables)
+        draft.loop_variables = []
+
+      draft.loop_variables.push({
+        id: uuid4(),
+        label: '',
+        var_type: VarType.string,
+        value_type: ValueType.constant,
+        value: '',
+      })
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleRemoveLoopVariable = useCallback((id: string) => {
+    const newInputs = produce(inputsRef.current, (draft) => {
+      draft.loop_variables = draft.loop_variables?.filter(item => item.id !== id)
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  const handleUpdateLoopVariable = useCallback((id: string, updateData: any) => {
+    const loopVariables = inputsRef.current.loop_variables || []
+    const index = loopVariables.findIndex(item => item.id === id)
+    const newInputs = produce(inputsRef.current, (draft) => {
+      if (index > -1) {
+        draft.loop_variables![index] = {
+          ...draft.loop_variables![index],
+          ...updateData,
+        }
+      }
+    })
+    handleInputsChange(newInputs)
+  }, [handleInputsChange])
+
+  return {
+    readOnly,
+    inputs,
+    filterInputVar,
+    childrenNodeVars,
+    loopChildrenNodes,
+    handleAddCondition,
+    handleRemoveCondition,
+    handleUpdateCondition,
+    handleToggleConditionLogicalOperator,
+    handleAddSubVariableCondition,
+    handleUpdateSubVariableCondition,
+    handleRemoveSubVariableCondition,
+    handleToggleSubVariableConditionLogicalOperator,
+    handleUpdateLoopCount,
+    changeErrorResponseMode,
+    handleAddLoopVariable,
+    handleRemoveLoopVariable,
+    handleUpdateLoopVariable,
+  }
+}
+
+export default useConfig

dify/web/app/components/workflow/nodes/loop/use-interactions.ts

@@ -0,0 +1,151 @@
+import { useCallback } from 'react'
+import { produce } from 'immer'
+import { useStoreApi } from 'reactflow'
+import type {
+  BlockEnum,
+  Node,
+} from '../../types'
+import {
+  generateNewNode,
+  getNodeCustomTypeByNodeDataType,
+} from '../../utils'
+import {
+  LOOP_PADDING,
+} from '../../constants'
+import { CUSTOM_LOOP_START_NODE } from '../loop-start/constants'
+import { useNodesMetaData } from '@/app/components/workflow/hooks'
+
+export const useNodeLoopInteractions = () => {
+  const store = useStoreApi()
+  const { nodesMap: nodesMetaDataMap } = useNodesMetaData()
+
+  const handleNodeLoopRerender = useCallback((nodeId: string) => {
+    const {
+      getNodes,
+      setNodes,
+    } = store.getState()
+
+    const nodes = getNodes()
+    const currentNode = nodes.find(n => n.id === nodeId)!
+    const childrenNodes = nodes.filter(n => n.parentId === nodeId)
+    let rightNode: Node
+    let bottomNode: Node
+
+    childrenNodes.forEach((n) => {
+      if (rightNode) {
+        if (n.position.x + n.width! > rightNode.position.x + rightNode.width!)
+          rightNode = n
+      }
+      else {
+        rightNode = n
+      }
+      if (bottomNode) {
+        if (n.position.y + n.height! > bottomNode.position.y + bottomNode.height!)
+          bottomNode = n
+      }
+      else {
+        bottomNode = n
+      }
+    })
+
+    const widthShouldExtend = rightNode! && currentNode.width! < rightNode.position.x + rightNode.width!
+    const heightShouldExtend = bottomNode! && currentNode.height! < bottomNode.position.y + bottomNode.height!
+
+    if (widthShouldExtend || heightShouldExtend) {
+      const newNodes = produce(nodes, (draft) => {
+        draft.forEach((n) => {
+          if (n.id === nodeId) {
+            if (widthShouldExtend) {
+              n.data.width = rightNode.position.x + rightNode.width! + LOOP_PADDING.right
+              n.width = rightNode.position.x + rightNode.width! + LOOP_PADDING.right
+            }
+            if (heightShouldExtend) {
+              n.data.height = bottomNode.position.y + bottomNode.height! + LOOP_PADDING.bottom
+              n.height = bottomNode.position.y + bottomNode.height! + LOOP_PADDING.bottom
+            }
+          }
+        })
+      })
+
+      setNodes(newNodes)
+    }
+  }, [store])
+
+  const handleNodeLoopChildDrag = useCallback((node: Node) => {
+    const { getNodes } = store.getState()
+    const nodes = getNodes()
+
+    const restrictPosition: { x?: number; y?: number } = { x: undefined, y: undefined }
+
+    if (node.data.isInLoop) {
+      const parentNode = nodes.find(n => n.id === node.parentId)
+
+      if (parentNode) {
+        if (node.position.y < LOOP_PADDING.top)
+          restrictPosition.y = LOOP_PADDING.top
+        if (node.position.x < LOOP_PADDING.left)
+          restrictPosition.x = LOOP_PADDING.left
+        if (node.position.x + node.width! > parentNode!.width! - LOOP_PADDING.right)
+          restrictPosition.x = parentNode!.width! - LOOP_PADDING.right - node.width!
+        if (node.position.y + node.height! > parentNode!.height! - LOOP_PADDING.bottom)
+          restrictPosition.y = parentNode!.height! - LOOP_PADDING.bottom - node.height!
+      }
+    }
+
+    return {
+      restrictPosition,
+    }
+  }, [store])
+
+  const handleNodeLoopChildSizeChange = useCallback((nodeId: string) => {
+    const { getNodes } = store.getState()
+    const nodes = getNodes()
+    const currentNode = nodes.find(n => n.id === nodeId)!
+    const parentId = currentNode.parentId
+
+    if (parentId)
+      handleNodeLoopRerender(parentId)
+  }, [store, handleNodeLoopRerender])
+
+  const handleNodeLoopChildrenCopy = useCallback((nodeId: string, newNodeId: string) => {
+    const { getNodes } = store.getState()
+    const nodes = getNodes()
+    const childrenNodes = nodes.filter(n => n.parentId === nodeId && n.type !== CUSTOM_LOOP_START_NODE)
+
+    return childrenNodes.map((child, index) => {
+      const childNodeType = child.data.type as BlockEnum
+      const {
+        defaultValue,
+      } = nodesMetaDataMap![childNodeType]
+      const nodesWithSameType = nodes.filter(node => node.data.type === childNodeType)
+      const { newNode } = generateNewNode({
+        type: getNodeCustomTypeByNodeDataType(childNodeType),
+        data: {
+          ...defaultValue,
+          ...child.data,
+          selected: false,
+          _isBundled: false,
+          _connectedSourceHandleIds: [],
+          _connectedTargetHandleIds: [],
+          title: nodesWithSameType.length > 0 ? `${defaultValue.title} ${nodesWithSameType.length + 1}` : defaultValue.title,
+          loop_id: newNodeId,
+
+        },
+        position: child.position,
+        positionAbsolute: child.positionAbsolute,
+        parentId: newNodeId,
+        extent: child.extent,
+        zIndex: child.zIndex,
+      })
+      newNode.id = `${newNodeId}${newNode.id + index}`
+      return newNode
+    })
+  }, [store, nodesMetaDataMap])
+
+  return {
+    handleNodeLoopRerender,
+    handleNodeLoopChildDrag,
+    handleNodeLoopChildSizeChange,
+    handleNodeLoopChildrenCopy,
+  }
+}

dify/web/app/components/workflow/nodes/loop/use-is-var-file-attribute.ts

@@ -0,0 +1,35 @@
+import { useMemo } from 'react'
+import { useIsChatMode, useWorkflow, useWorkflowVariables } from '../../hooks'
+import type { ValueSelector } from '../../types'
+import { VarType } from '../../types'
+
+type Params = {
+  nodeId: string
+}
+const useIsVarFileAttribute = ({
+  nodeId,
+}: Params) => {
+  const isChatMode = useIsChatMode()
+  const { getBeforeNodesInSameBranch } = useWorkflow()
+  const availableNodes = useMemo(() => {
+    return getBeforeNodesInSameBranch(nodeId)
+  }, [getBeforeNodesInSameBranch, nodeId])
+  const { getCurrentVariableType } = useWorkflowVariables()
+  const getIsVarFileAttribute = (variable: ValueSelector) => {
+    if (variable.length !== 3)
+      return false
+    const parentVariable = variable.slice(0, 2)
+    const varType = getCurrentVariableType({
+      valueSelector: parentVariable,
+      availableNodes,
+      isChatMode,
+      isConstant: false,
+    })
+    return varType === VarType.file
+  }
+  return {
+    getIsVarFileAttribute,
+  }
+}
+
+export default useIsVarFileAttribute

dify/web/app/components/workflow/nodes/loop/use-single-run-form-params.ts

@@ -0,0 +1,220 @@
+import type { NodeTracing } from '@/types/workflow'
+import { useCallback, useMemo } from 'react'
+import formatTracing from '@/app/components/workflow/run/utils/format-log'
+import { useTranslation } from 'react-i18next'
+import { useIsNodeInLoop, useWorkflow } from '../../hooks'
+import { getNodeInfoById, getNodeUsedVarPassToServerKey, getNodeUsedVars, isSystemVar } from '../_base/components/variable/utils'
+import type { InputVar, ValueSelector, Variable } from '../../types'
+import type { CaseItem, Condition, LoopNodeType } from './types'
+import { ValueType } from '@/app/components/workflow/types'
+import { VALUE_SELECTOR_DELIMITER as DELIMITER } from '@/config'
+
+type Params = {
+  id: string
+  payload: LoopNodeType
+  runInputData: Record<string, any>
+  runResult: NodeTracing
+  loopRunResult: NodeTracing[]
+  setRunInputData: (data: Record<string, any>) => void
+  toVarInputs: (variables: Variable[]) => InputVar[]
+  varSelectorsToVarInputs: (variables: ValueSelector[]) => InputVar[]
+}
+
+const useSingleRunFormParams = ({
+  id,
+  payload,
+  runInputData,
+  runResult,
+  loopRunResult,
+  setRunInputData,
+  toVarInputs,
+  varSelectorsToVarInputs,
+}: Params) => {
+  const { t } = useTranslation()
+
+  const { isNodeInLoop } = useIsNodeInLoop(id)
+
+  const { getLoopNodeChildren, getBeforeNodesInSameBranch } = useWorkflow()
+  const loopChildrenNodes = getLoopNodeChildren(id)
+  const beforeNodes = getBeforeNodesInSameBranch(id)
+  const canChooseVarNodes = [...beforeNodes, ...loopChildrenNodes]
+
+  const { usedOutVars, allVarObject } = (() => {
+    const vars: ValueSelector[] = []
+    const varObjs: Record<string, boolean> = {}
+    const allVarObject: Record<string, {
+      inSingleRunPassedKey: string
+    }> = {}
+    loopChildrenNodes.forEach((node) => {
+      const nodeVars = getNodeUsedVars(node).filter(item => item && item.length > 0)
+      nodeVars.forEach((varSelector) => {
+        if (varSelector[0] === id) { // skip loop node itself variable: item, index
+          return
+        }
+        const isInLoop = isNodeInLoop(varSelector[0])
+        if (isInLoop) // not pass loop inner variable
+          return
+
+        const varSectorStr = varSelector.join('.')
+        if (!varObjs[varSectorStr]) {
+          varObjs[varSectorStr] = true
+          vars.push(varSelector)
+        }
+        let passToServerKeys = getNodeUsedVarPassToServerKey(node, varSelector)
+        if (typeof passToServerKeys === 'string')
+          passToServerKeys = [passToServerKeys]
+
+        passToServerKeys.forEach((key: string, index: number) => {
+          allVarObject[[varSectorStr, node.id, index].join(DELIMITER)] = {
+            inSingleRunPassedKey: key,
+          }
+        })
+      })
+    })
+
+    const res = toVarInputs(vars.map((item) => {
+      const varInfo = getNodeInfoById(canChooseVarNodes, item[0])
+      return {
+        label: {
+          nodeType: varInfo?.data.type,
+          nodeName: varInfo?.data.title || canChooseVarNodes[0]?.data.title, // default start node title
+          variable: isSystemVar(item) ? item.join('.') : item[item.length - 1],
+        },
+        variable: `${item.join('.')}`,
+        value_selector: item,
+      }
+    }))
+    return {
+      usedOutVars: res,
+      allVarObject,
+    }
+  })()
+
+  const nodeInfo = useMemo(() => {
+    const formattedNodeInfo = formatTracing(loopRunResult, t)[0]
+
+    if (runResult && formattedNodeInfo) {
+      return {
+        ...formattedNodeInfo,
+        execution_metadata: {
+          ...runResult.execution_metadata,
+          ...formattedNodeInfo.execution_metadata,
+        },
+      }
+    }
+
+    return formattedNodeInfo
+  }, [runResult, loopRunResult, t])
+
+  const setInputVarValues = useCallback((newPayload: Record<string, any>) => {
+    setRunInputData(newPayload)
+  }, [setRunInputData])
+
+  const inputVarValues = (() => {
+    const vars: Record<string, any> = {}
+    Object.keys(runInputData)
+      .forEach((key) => {
+        vars[key] = runInputData[key]
+      })
+    return vars
+  })()
+
+  const getVarSelectorsFromCase = (caseItem: CaseItem): ValueSelector[] => {
+    const vars: ValueSelector[] = []
+    if (caseItem.conditions && caseItem.conditions.length) {
+      caseItem.conditions.forEach((condition) => {
+        // eslint-disable-next-line ts/no-use-before-define
+        const conditionVars = getVarSelectorsFromCondition(condition)
+        vars.push(...conditionVars)
+      })
+    }
+    return vars
+  }
+
+  const getVarSelectorsFromCondition = (condition: Condition) => {
+    const vars: ValueSelector[] = []
+    if (condition.variable_selector)
+      vars.push(condition.variable_selector)
+
+    if (condition.sub_variable_condition && condition.sub_variable_condition.conditions?.length)
+      vars.push(...getVarSelectorsFromCase(condition.sub_variable_condition))
+    return vars
+  }
+
+  const forms = (() => {
+    const allInputs: ValueSelector[] = []
+    payload.break_conditions?.forEach((condition) => {
+      const vars = getVarSelectorsFromCondition(condition)
+      allInputs.push(...vars)
+    })
+
+    payload.loop_variables?.forEach((loopVariable) => {
+      if (loopVariable.value_type === ValueType.variable)
+        allInputs.push(loopVariable.value)
+    })
+    const inputVarsFromValue: InputVar[] = []
+    const varInputs = [...varSelectorsToVarInputs(allInputs), ...inputVarsFromValue]
+    const existVarsKey: Record<string, boolean> = {}
+    const uniqueVarInputs: InputVar[] = []
+    varInputs.forEach((input) => {
+      if (!input)
+        return
+      if (!existVarsKey[input.variable]) {
+        existVarsKey[input.variable] = true
+        uniqueVarInputs.push(input)
+      }
+    })
+    return [
+      {
+        inputs: [...usedOutVars, ...uniqueVarInputs],
+        values: inputVarValues,
+        onChange: setInputVarValues,
+      },
+    ]
+  })()
+
+  const getVarFromCaseItem = (caseItem: CaseItem): ValueSelector[] => {
+    const vars: ValueSelector[] = []
+    if (caseItem.conditions && caseItem.conditions.length) {
+      caseItem.conditions.forEach((condition) => {
+        // eslint-disable-next-line ts/no-use-before-define
+        const conditionVars = getVarFromCondition(condition)
+        vars.push(...conditionVars)
+      })
+    }
+    return vars
+  }
+
+  const getVarFromCondition = (condition: Condition): ValueSelector[] => {
+    const vars: ValueSelector[] = []
+    if (condition.variable_selector)
+      vars.push(condition.variable_selector)
+
+    if (condition.sub_variable_condition && condition.sub_variable_condition.conditions?.length)
+      vars.push(...getVarFromCaseItem(condition.sub_variable_condition))
+    return vars
+  }
+
+  const getDependentVars = () => {
+    const vars: ValueSelector[] = usedOutVars.map(item => item.variable.split('.'))
+    payload.break_conditions?.forEach((condition) => {
+      const conditionVars = getVarFromCondition(condition)
+      vars.push(...conditionVars)
+    })
+    payload.loop_variables?.forEach((loopVariable) => {
+      if (loopVariable.value_type === ValueType.variable)
+        vars.push(loopVariable.value)
+    })
+    const hasFilterLoopVars = vars.filter(item => item[0] !== id)
+    return hasFilterLoopVars
+  }
+
+  return {
+    forms,
+    nodeInfo,
+    allVarObject,
+    getDependentVars,
+  }
+}
+
+export default useSingleRunFormParams

dify/web/app/components/workflow/nodes/loop/utils.ts

@@ -0,0 +1,186 @@
+import { ComparisonOperator } from './types'
+import { VarType } from '@/app/components/workflow/types'
+import type { Branch } from '@/app/components/workflow/types'
+
+export const isEmptyRelatedOperator = (operator: ComparisonOperator) => {
+  return [ComparisonOperator.empty, ComparisonOperator.notEmpty, ComparisonOperator.isNull, ComparisonOperator.isNotNull, ComparisonOperator.exists, ComparisonOperator.notExists].includes(operator)
+}
+
+const notTranslateKey = [
+  ComparisonOperator.equal, ComparisonOperator.notEqual,
+  ComparisonOperator.largerThan, ComparisonOperator.largerThanOrEqual,
+  ComparisonOperator.lessThan, ComparisonOperator.lessThanOrEqual,
+]
+
+export const isComparisonOperatorNeedTranslate = (operator?: ComparisonOperator) => {
+  if (!operator)
+    return false
+  return !notTranslateKey.includes(operator)
+}
+
+export const getOperators = (type?: VarType, file?: { key: string }) => {
+  const isFile = !!file
+  if (isFile) {
+    const { key } = file
+
+    switch (key) {
+      case 'name':
+        return [
+          ComparisonOperator.contains,
+          ComparisonOperator.notContains,
+          ComparisonOperator.startWith,
+          ComparisonOperator.endWith,
+          ComparisonOperator.is,
+          ComparisonOperator.isNot,
+          ComparisonOperator.empty,
+          ComparisonOperator.notEmpty,
+        ]
+      case 'type':
+        return [
+          ComparisonOperator.in,
+          ComparisonOperator.notIn,
+        ]
+      case 'size':
+        return [
+          ComparisonOperator.largerThan,
+          ComparisonOperator.largerThanOrEqual,
+          ComparisonOperator.lessThan,
+          ComparisonOperator.lessThanOrEqual,
+        ]
+      case 'extension':
+        return [
+          ComparisonOperator.is,
+          ComparisonOperator.isNot,
+          ComparisonOperator.contains,
+          ComparisonOperator.notContains,
+        ]
+      case 'mime_type':
+        return [
+          ComparisonOperator.contains,
+          ComparisonOperator.notContains,
+          ComparisonOperator.startWith,
+          ComparisonOperator.endWith,
+          ComparisonOperator.is,
+          ComparisonOperator.isNot,
+          ComparisonOperator.empty,
+          ComparisonOperator.notEmpty,
+        ]
+      case 'transfer_method':
+        return [
+          ComparisonOperator.in,
+          ComparisonOperator.notIn,
+        ]
+      case 'url':
+        return [
+          ComparisonOperator.contains,
+          ComparisonOperator.notContains,
+          ComparisonOperator.startWith,
+          ComparisonOperator.endWith,
+          ComparisonOperator.is,
+          ComparisonOperator.isNot,
+          ComparisonOperator.empty,
+          ComparisonOperator.notEmpty,
+        ]
+    }
+    return []
+  }
+  switch (type) {
+    case VarType.string:
+      return [
+        ComparisonOperator.contains,
+        ComparisonOperator.notContains,
+        ComparisonOperator.startWith,
+        ComparisonOperator.endWith,
+        ComparisonOperator.is,
+        ComparisonOperator.isNot,
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+    case VarType.number:
+      return [
+        ComparisonOperator.equal,
+        ComparisonOperator.notEqual,
+        ComparisonOperator.largerThan,
+        ComparisonOperator.lessThan,
+        ComparisonOperator.largerThanOrEqual,
+        ComparisonOperator.lessThanOrEqual,
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+    case VarType.boolean:
+      return [
+        ComparisonOperator.is,
+        ComparisonOperator.isNot,
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+    case VarType.object:
+      return [
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+    case VarType.file:
+      return [
+        ComparisonOperator.exists,
+        ComparisonOperator.notExists,
+      ]
+    case VarType.arrayString:
+    case VarType.arrayNumber:
+      return [
+        ComparisonOperator.contains,
+        ComparisonOperator.notContains,
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+    case VarType.array:
+    case VarType.arrayObject:
+      return [
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+    case VarType.arrayFile:
+      return [
+        ComparisonOperator.contains,
+        ComparisonOperator.notContains,
+        ComparisonOperator.allOf,
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+    default:
+      return [
+        ComparisonOperator.is,
+        ComparisonOperator.isNot,
+        ComparisonOperator.empty,
+        ComparisonOperator.notEmpty,
+      ]
+  }
+}
+
+export const comparisonOperatorNotRequireValue = (operator?: ComparisonOperator) => {
+  if (!operator)
+    return false
+
+  return [ComparisonOperator.empty, ComparisonOperator.notEmpty, ComparisonOperator.isNull, ComparisonOperator.isNotNull, ComparisonOperator.exists, ComparisonOperator.notExists].includes(operator)
+}
+
+export const branchNameCorrect = (branches: Branch[]) => {
+  const branchLength = branches.length
+  if (branchLength < 2)
+    throw new Error('if-else node branch number must than 2')
+
+  if (branchLength === 2) {
+    return branches.map((branch) => {
+      return {
+        ...branch,
+        name: branch.id === 'false' ? 'ELSE' : 'IF',
+      }
+    })
+  }
+
+  return branches.map((branch, index) => {
+    return {
+      ...branch,
+      name: branch.id === 'false' ? 'ELSE' : `CASE ${index + 1}`,
+    }
+  })
+}