The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"id": "RKbQHfblpcvMGZ4w",
"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": {
"name": "<your credential>"
}
},
"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": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "3e9e5c16-0080-4cba-8a8a-8f24f7266fcb",
"name": "On form submission",
"type": "n8n-nodes-base.formTrigger",
"position": [
40,
-620
],
"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": {
"name": "<your credential>"
}
},
"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\n\n- Customize your form fields. \n- The dropdown field will auto-update with values from your data source. \n- Other form fields can be added as needed (limited to one dropdown field).\n- Connect to your workflow that processes the submitted form data.\n\n### 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\n\n- Connect to your Google Sheet containing dropdown values\n- Node can be replaced with any other data source (API, database)\n- 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\n\n- Extracts needed data from source\n- 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\n\n- 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 \n\n- 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 \n- 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 \n\n- Replaces the current workflow\u2019s 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);\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": "Replace values",
"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": "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": {
"name": "<your credential>"
}
},
"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,
"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
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
googleSheetsOAuth2ApigoogleSheetsTriggerOAuth2Apin8nApi
About this workflow
Form with Dynamic Dropdown Field. Uses n8n, formTrigger, googleSheetsTrigger, executeWorkflow. Event-driven trigger; 16 nodes.
Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →