feat: Validate LLM node context before running workflow

web/app/components/workflow/nodes/_base/components/workflow-panel/last-run/use-last-run.ts

@@ -1,8 +1,10 @@
 import type { Props as FormProps } from '@/app/components/workflow/nodes/_base/components/before-run-form/form'
 import type { Params as OneStepRunParams } from '@/app/components/workflow/nodes/_base/hooks/use-one-step-run'
+import type { LLMNodeType } from '@/app/components/workflow/nodes/llm/types'
 // import
 import type { CommonNodeType, ValueSelector } from '@/app/components/workflow/types'
 import { useCallback, useEffect, useState } from 'react'
+import { useTranslation } from 'react-i18next'
 import Toast from '@/app/components/base/toast'
 import {
   useNodesSyncDraft,
@@ -127,6 +129,7 @@ const useLastRun = <T>({
   ...oneStepRunParams
 }: Params<T>) => {
   const { conversationVars, systemVars, hasSetInspectVar } = useInspectVarsCrud()
+  const { t } = useTranslation()
   const blockType = oneStepRunParams.data.type
   const isStartNode = blockType === BlockEnum.Start
   const isIterationNode = blockType === BlockEnum.Iteration
@@ -234,12 +237,26 @@ const useLastRun = <T>({
   }, [initShowLastRunTab])
   const invalidLastRun = useInvalidLastRun(flowType, flowId, id)
 
+  const ensureLLMContextReady = useCallback(() => {
+    if (blockType !== BlockEnum.LLM)
+      return true
+    const llmData = data as unknown as LLMNodeType
+    const contextSelector = llmData.context?.variable_selector
+    if (!Array.isArray(contextSelector) || contextSelector.length === 0) {
+      Toast.notify({ type: 'error', message: t('nodes.llm.contextMissing', { ns: 'workflow' }) })
+      return false
+    }
+    return true
+  }, [blockType, data, t])
+
   const handleRunWithParams = async (data: Record<string, any>) => {
     if (blockIfChecklistFailed())
       return
     const { isValid } = checkValid()
     if (!isValid)
       return
+    if (!ensureLLMContextReady())
+      return
     setNodeRunning()
     setIsRunAfterSingleRun(true)
     setTabType(TabType.lastRun)
@@ -340,6 +357,8 @@ const useLastRun = <T>({
     const { isValid } = checkValid()
     if (!isValid)
       return
+    if (!ensureLLMContextReady())
+      return
     if (blockType === BlockEnum.TriggerWebhook || blockType === BlockEnum.TriggerPlugin || blockType === BlockEnum.TriggerSchedule)
       setShowVariableInspectPanel(true)
     if (isCustomRunNode) {

web/i18n/en-US/workflow.json

@@ -672,6 +672,7 @@
   "nodes.llm.computerUse.tooltip": "Manage the runtime filesystem and tool access for your agent.",
   "nodes.llm.context": "context",
   "nodes.llm.contextBlock": "Context Block",
+  "nodes.llm.contextMissing": "Missing context from previous nodes. Please select a context variable.",
   "nodes.llm.contextTooltip": "You can import Knowledge as context",
   "nodes.llm.files": "Files",
   "nodes.llm.jsonSchema.addChildField": "Add Child Field",

web/i18n/ja-JP/workflow.json

@@ -648,6 +648,7 @@
   "nodes.llm.addMessage": "メッセージ追加",
   "nodes.llm.context": "コンテキスト",
   "nodes.llm.contextBlock": "コンテキストブロック",
+  "nodes.llm.contextMissing": "前のノードのコンテキストがありません。コンテキスト変数を選択してください。",
   "nodes.llm.contextTooltip": "ナレッジベースをコンテキストとして利用",
   "nodes.llm.files": "ファイル",
   "nodes.llm.jsonSchema.addChildField": "サブフィールドを追加",

web/i18n/zh-Hans/workflow.json

@@ -665,6 +665,7 @@
   "nodes.llm.computerUse.tooltip": "管理代理的运行时文件系统与工具访问权限。",
   "nodes.llm.context": "上下文",
   "nodes.llm.contextBlock": "上下文块",
+  "nodes.llm.contextMissing": "缺少前序节点的上下文，请先选择上下文变量。",
   "nodes.llm.contextTooltip": "您可以导入知识库作为上下文",
   "nodes.llm.files": "文件",
   "nodes.llm.jsonSchema.addChildField": "添加子字段",

web/i18n/zh-Hant/workflow.json

@@ -648,6 +648,7 @@
   "nodes.llm.addMessage": "新增消息",
   "nodes.llm.context": "上下文",
   "nodes.llm.contextBlock": "上下文區塊",
+  "nodes.llm.contextMissing": "缺少前序節點的上下文，請先選擇上下文變數。",
   "nodes.llm.contextTooltip": "您可以導入知識庫作為上下文",
   "nodes.llm.files": "文件",
   "nodes.llm.jsonSchema.addChildField": "新增子欄位",