Form with Dynamic Dropdown Field
工作流概述
这是一个包含16个节点的复杂工作流，主要用于自动化处理各种任务。
工作流源代码
{
"id": "RKbQHfblpcvMGZ4w",
"meta": {
"instanceId": "d47f3738b860eed937a1b18d7345fa2c65cf4b4957554e29477cb064a7039870"
},
"name": "Form with Dynamic Dropdown Field",
"tags": [],
"nodes": [
{
"id": "aa627a35-9bea-4c07-b7e7-26f048564443",
"name": "n8n | get wf",
"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 | update",
"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": "On form submission",
"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 Trigger",
"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": "Execute Workflow",
"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": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-520,
-660
],
"parameters": {
"width": 960,
"height": 240,
"content": "## Form setup
- Customize your form fields.
- The dropdown field will auto-update with values from your data source.
- Other form fields can be added as needed (limited to one dropdown field).
- Connect to your workflow that processes the submitted form data.
### Form requires production mode for testing"
},
"typeVersion": 1
},
{
"id": "41c364f4-5b1f-42fd-841b-a6f99b585804",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-520,
-400
],
"parameters": {
"width": 440,
"height": 400,
"content": "## Data source setup
- Connect to your Google Sheet containing dropdown values
- Node can be replaced with any other data source (API, database)
- Set timing trigger"
},
"typeVersion": 1
},
{
"id": "cda8f803-1773-4df7-90b9-4d8cd0469cd8",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-60,
-400
],
"parameters": {
"width": 260,
"height": 400,
"content": "## Data formatting
- Extracts needed data from source
- Renames field to 'value' (do not change this name)"
},
"typeVersion": 1
},
{
"id": "e9594ad1-3bb8-4da6-95b3-cb610a17c1bb",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
220,
-400
],
"parameters": {
"height": 400,
"content": "## Nested properties
- Transforms the data to the desired format"
},
"typeVersion": 1
},
{
"id": "806a2502-5c6c-435c-a20e-8ca0eee92822",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
480,
-400
],
"parameters": {
"height": 400,
"content": "## Get Workflow
- Gets the current workflow data"
},
"typeVersion": 1
},
{
"id": "385c3e64-9893-4e3f-b789-abbf079fa8b1",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
740,
-400
],
"parameters": {
"height": 400,
"content": "## Add Dropdown Values
- Replaces the nested parameters of the Dropdown Form Field with the nested properties sourced from the data."
},
"typeVersion": 1
},
{
"id": "f43324fc-6790-445b-a72b-ae4afb051101",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
1000,
-400
],
"parameters": {
"height": 400,
"content": "## Update Form
- Replaces the current workflow’s JSON with the updated JSON containing the new Dropdown values."
},
"typeVersion": 1
},
{
"id": "317694bd-590f-4eb4-a53f-f4d5d2d1ab16",
"name": "Write JSON",
"type": "n8n-nodes-base.code",
"position": [
280,
-180
],
"parameters": {
"jsCode": "const inputArray = items.map(item => item.json);
const output = [
{
nodes: [
{
parameters: {
formFields: {
values: [
{
fieldOptions: {
values: inputArray.map(entry => ({ option: entry.value }))
}
}
]
}
}
}
]
}
];
// Return the transformed output
return output.map(item => ({ json: item }));"
},
"typeVersion": 2
},
{
"id": "08b3c0b3-3df3-40d9-80ce-bd7c763fdbdb",
"name": "Replace values",
"type": "n8n-nodes-base.set",
"position": [
820,
-180
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "38ef2b43-b903-4e96-b098-9da2d8c1c153",
"name": "={{
(() => {
const nodeIndex = $json.nodes.findIndex(
node => node.parameters?.formFields?.values.some(
value => value.fieldType === 'dropdown' && value.fieldOptions?.values
)
);
if (nodeIndex === -1) return 'No matching node found';
const valueIndex = $json.nodes[nodeIndex].parameters.formFields.values.findIndex(
value => value.fieldType === 'dropdown' && value.fieldOptions?.values
);
if (valueIndex === -1) return `nodes[${nodeIndex}].parameters.formFields.values - No matching dropdown value found`;
return `nodes[${nodeIndex}].parameters.formFields.values[${valueIndex}].fieldOptions.values`;
})()
}}",
"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": "Get all values",
"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": "Format to '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
}
]
]
}
}
}功能特点
- 自动检测新邮件
- AI智能内容分析
- 自定义分类规则
- 批量处理能力
- 详细的处理日志
技术分析
节点类型及作用
- N8N
- Formtrigger
- Googlesheetstrigger
- Executeworkflow
- Stickynote
复杂度评估
配置难度：
维护难度：
扩展性：
实施指南
前置条件
- 有效的Gmail账户
- n8n平台访问权限
- Google API凭证
- AI分类服务订阅
配置步骤
- 在n8n中导入工作流JSON文件
- 配置Gmail节点的认证信息
- 设置AI分类器的API密钥
- 自定义分类规则和标签映射
- 测试工作流执行
- 配置定时触发器（可选）
关键参数
| 参数名称 | 默认值 | 说明 |
|---|---|---|
| maxEmails | 50 | 单次处理的最大邮件数量 |
| confidenceThreshold | 0.8 | 分类置信度阈值 |
| autoLabel | true | 是否自动添加标签 |
最佳实践
优化建议
- 定期更新AI分类模型以提高准确性
- 根据邮件量调整处理批次大小
- 设置合理的分类置信度阈值
- 定期清理过期的分类规则
安全注意事项
- 妥善保管API密钥和认证信息
- 限制工作流的访问权限
- 定期审查处理日志
- 启用双因素认证保护Gmail账户
性能优化
- 使用增量处理减少重复工作
- 缓存频繁访问的数据
- 并行处理多个邮件分类任务
- 监控系统资源使用情况
故障排除
常见问题
邮件未被正确分类
检查AI分类器的置信度阈值设置，适当降低阈值或更新训练数据。
Gmail认证失败
确认Google API凭证有效且具有正确的权限范围，重新进行OAuth授权。
调试技巧
- 启用详细日志记录查看每个步骤的执行情况
- 使用测试邮件验证分类逻辑
- 检查网络连接和API服务状态
- 逐步执行工作流定位问题节点
错误处理
工作流包含以下错误处理机制：
- 网络超时自动重试（最多3次）
- API错误记录和告警
- 处理失败邮件的隔离机制
- 异常情况下的回滚操作