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带动态下拉字段的表单

高级

这是一个Building Blocks领域的自动化工作流，包含 16 个节点。主要使用 N8n, Set, Code, FormTrigger, GoogleSheets 等节点。 带动态下拉字段的表单

前置要求
  • •Google Sheets API 凭证

使用的节点 (16)

N8n
Set
Code
StickyNote
FormTrigger
GoogleSheets
ExecuteWorkflow
GoogleSheetsTrigger

分类

构建模块
工作流预览
可视化展示节点连接关系，支持缩放和平移
React Flow
导出工作流
复制以下 JSON 配置到 n8n 导入，即可使用此工作流
{
  "id": "RKbQHfblpcvMGZ4w",
  "meta": {
    "instanceId": "d47f3738b860eed937a1b18d7345fa2c65cf4b4957554e29477cb064a7039870"
  },
  "name": "带动态下拉字段的表单",
  "tags": [],
  "nodes": [
    {
      "id": "aa627a35-9bea-4c07-b7e7-26f048564443",
      "name": "n8n | 获取工作流",
      "type": "n8n-nodes-base.n8n",
      "position": [
        540,
        -180
      ],
      "parameters": {
        "operation": "get",
        "workflowId": {
          "__rl": true,
          "mode": "id",
          "value": "={{ $workflow.id }}"
        },
        "requestOptions": {}
      },
      "credentials": {
        "n8nApi": {
          "id": "us0k8UE7R2MZPFBK",
          "name": "n8n account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "902a8e45-f4b4-469c-96a6-80002de5f6dc",
      "name": "n8n | 更新",
      "type": "n8n-nodes-base.n8n",
      "position": [
        1060,
        -180
      ],
      "parameters": {
        "operation": "update",
        "workflowId": {
          "__rl": true,
          "mode": "id",
          "value": "={{ $json.id }}"
        },
        "requestOptions": {},
        "workflowObject": "={{ JSON.stringify($json) }}"
      },
      "credentials": {
        "n8nApi": {
          "id": "us0k8UE7R2MZPFBK",
          "name": "n8n account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "3e9e5c16-0080-4cba-8a8a-8f24f7266fcb",
      "name": "表单提交时",
      "type": "n8n-nodes-base.formTrigger",
      "position": [
        40,
        -620
      ],
      "webhookId": "3e975d29-df26-49fb-8dcf-abe8fe8bc4e6",
      "parameters": {
        "options": {},
        "formTitle": "Example Title",
        "formFields": {
          "values": [
            {
              "fieldLabel": "Example text field"
            },
            {
              "fieldType": "dropdown",
              "fieldLabel": "Example dropdown",
              "fieldOptions": {
                "values": [
                  {
                    "option": "test publieke ruimtes"
                  },
                  {
                    "option": "Demonstraties"
                  },
                  {
                    "option": "Demonstraties"
                  },
                  {
                    "option": "Juridisch medewerker IE-recht  Streetlife"
                  },
                  {
                    "option": "Bamboe"
                  },
                  {
                    "option": "Klaar?"
                  },
                  {
                    "option": "Dannu?"
                  }
                ]
              }
            }
          ]
        }
      },
      "typeVersion": 2.2
    },
    {
      "id": "0b874994-c123-44f8-b0f5-0b365b57d945",
      "name": "Google Sheets 触发器",
      "type": "n8n-nodes-base.googleSheetsTrigger",
      "position": [
        -460,
        -180
      ],
      "parameters": {
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        },
        "sheetName": {
          "__rl": true,
          "mode": "list",
          "value": "gid=0",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1F73a7uuzLAq916w2JFndumv0JhnCAvOTN-Cn_OOP3uA/edit#gid=0",
          "cachedResultName": "Blad1"
        },
        "documentId": {
          "__rl": true,
          "mode": "list",
          "value": "1F73a7uuzLAq916w2JFndumv0JhnCAvOTN-Cn_OOP3uA",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1F73a7uuzLAq916w2JFndumv0JhnCAvOTN-Cn_OOP3uA/edit?usp=drivesdk",
          "cachedResultName": "obsidian-n8n"
        },
        "includeInOutput": "both"
      },
      "credentials": {
        "googleSheetsTriggerOAuth2Api": {
          "id": "FV58wiwivBMosfix",
          "name": "Google Sheets Trigger account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "4c9bfed8-a758-40b9-9c74-53bedc1d1aa3",
      "name": "执行工作流",
      "type": "n8n-nodes-base.executeWorkflow",
      "position": [
        240,
        -620
      ],
      "parameters": {
        "options": {},
        "workflowId": {
          "__rl": true,
          "mode": "id",
          "value": "={{ $workflow.id }}"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "6e9d4a5a-9583-4b61-aea1-dd4892230e7c",
      "name": "便签",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -520,
        -660
      ],
      "parameters": {
        "width": 960,
        "height": 240,
        "content": "## 表单设置"
      },
      "typeVersion": 1
    },
    {
      "id": "41c364f4-5b1f-42fd-841b-a6f99b585804",
      "name": "便签1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -520,
        -400
      ],
      "parameters": {
        "width": 440,
        "height": 400,
        "content": "## 数据源设置"
      },
      "typeVersion": 1
    },
    {
      "id": "cda8f803-1773-4df7-90b9-4d8cd0469cd8",
      "name": "便签2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -60,
        -400
      ],
      "parameters": {
        "width": 260,
        "height": 400,
        "content": "## 数据格式化"
      },
      "typeVersion": 1
    },
    {
      "id": "e9594ad1-3bb8-4da6-95b3-cb610a17c1bb",
      "name": "便签3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        220,
        -400
      ],
      "parameters": {
        "height": 400,
        "content": "## 嵌套属性"
      },
      "typeVersion": 1
    },
    {
      "id": "806a2502-5c6c-435c-a20e-8ca0eee92822",
      "name": "便签4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        480,
        -400
      ],
      "parameters": {
        "height": 400,
        "content": "## 获取工作流"
      },
      "typeVersion": 1
    },
    {
      "id": "385c3e64-9893-4e3f-b789-abbf079fa8b1",
      "name": "便签5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        740,
        -400
      ],
      "parameters": {
        "height": 400,
        "content": "## 添加下拉数值"
      },
      "typeVersion": 1
    },
    {
      "id": "f43324fc-6790-445b-a72b-ae4afb051101",
      "name": "便签6",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1000,
        -400
      ],
      "parameters": {
        "height": 400,
        "content": "## 更新表单"
      },
      "typeVersion": 1
    },
    {
      "id": "317694bd-590f-4eb4-a53f-f4d5d2d1ab16",
      "name": "写入 JSON",
      "type": "n8n-nodes-base.code",
      "position": [
        280,
        -180
      ],
      "parameters": {
        "jsCode": "const inputArray = items.map(item => item.json);\n\nconst output = [\n  {\n    nodes: [\n      {\n        parameters: {\n          formFields: {\n            values: [\n              {\n                fieldOptions: {\n                  values: inputArray.map(entry => ({ option: entry.value }))\n                }\n              }\n            ]\n          }\n        }\n      }\n    ]\n  }\n];\n\n// Return the transformed output\nreturn output.map(item => ({ json: item }));"
      },
      "typeVersion": 2
    },
    {
      "id": "08b3c0b3-3df3-40d9-80ce-bd7c763fdbdb",
      "name": "替换数值",
      "type": "n8n-nodes-base.set",
      "position": [
        820,
        -180
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "38ef2b43-b903-4e96-b098-9da2d8c1c153",
              "name": "={{ \n   (() => {\n      const nodeIndex = $json.nodes.findIndex(\n         node => node.parameters?.formFields?.values.some(\n            value => value.fieldType === 'dropdown' && value.fieldOptions?.values\n         )\n      );\n\n      if (nodeIndex === -1) return 'No matching node found';\n\n      const valueIndex = $json.nodes[nodeIndex].parameters.formFields.values.findIndex(\n         value => value.fieldType === 'dropdown' && value.fieldOptions?.values\n      );\n\n      if (valueIndex === -1) return `nodes[${nodeIndex}].parameters.formFields.values - No matching dropdown value found`;\n\n      return `nodes[${nodeIndex}].parameters.formFields.values[${valueIndex}].fieldOptions.values`;\n   })()\n}}",
              "type": "array",
              "value": "={{ $('Write JSON').item.json.nodes[0].parameters.formFields.values[0].fieldOptions.values }}"
            }
          ]
        },
        "includeOtherFields": true
      },
      "typeVersion": 3.4
    },
    {
      "id": "07635565-f8ea-4fac-b93c-069fbe065ce8",
      "name": "获取所有数值",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        -240,
        -180
      ],
      "parameters": {
        "options": {},
        "sheetName": {
          "__rl": true,
          "mode": "list",
          "value": "gid=0",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1F73a7uuzLAq916w2JFndumv0JhnCAvOTN-Cn_OOP3uA/edit#gid=0",
          "cachedResultName": "Blad1"
        },
        "documentId": {
          "__rl": true,
          "mode": "list",
          "value": "1F73a7uuzLAq916w2JFndumv0JhnCAvOTN-Cn_OOP3uA",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1F73a7uuzLAq916w2JFndumv0JhnCAvOTN-Cn_OOP3uA/edit?usp=drivesdk",
          "cachedResultName": "obsidian-n8n"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "3Pu0wlfxgNYzVqY6",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.5
    },
    {
      "id": "9ce7bf73-211a-4f5b-b39d-81a2d513a3ef",
      "name": "格式化为'values'",
      "type": "n8n-nodes-base.set",
      "position": [
        20,
        -180
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "e18aa12e-f277-4257-ba27-9262cc7b866a",
              "name": "value",
              "type": "string",
              "value": "={{ $json.title }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    }
  ],
  "active": true,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "d69a3011-97a6-44e9-9b7e-c8e9a248964a",
  "connections": {
    "Write JSON": {
      "main": [
        [
          {
            "node": "n8n | get wf",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "n8n | get wf": {
      "main": [
        [
          {
            "node": "Replace values",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get all values": {
      "main": [
        [
          {
            "node": "Format to 'values'",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Replace values": {
      "main": [
        [
          {
            "node": "n8n | update",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format to 'values'": {
      "main": [
        [
          {
            "node": "Write JSON",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "On form submission": {
      "main": [
        [
          {
            "node": "Execute Workflow",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Google Sheets Trigger": {
      "main": [
        [
          {
            "node": "Get all values",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}
常见问题

如何使用这个工作流？

复制上方的 JSON 配置代码，在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」，粘贴配置后根据需要修改凭证设置即可。

这个工作流适合什么场景？

高级 - 构建模块

需要付费吗？

本工作流完全免费，您可以直接导入使用。但请注意，工作流中使用的第三方服务（如 OpenAI API）可能需要您自行付费。

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适合高级用户，包含 16+ 个节点的复杂工作流

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外部链接
在 n8n.io 查看 →

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