Form with Dynamic Dropdown Field
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Dynamically updates a dropdown field in a form based on data from an external source.
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About This Workflow
Overview
This workflow demonstrates how to dynamically populate a dropdown field within an n8n form. It fetches data from a Google Sheet (or any other data source), processes it, and then updates the form's workflow to include these fetched values as options in a dropdown.
Key Features
- Dynamically update form fields.
- Fetch data from Google Sheets or other sources.
- Supports one dropdown field per form.
- Workflow is designed to be production-ready.
How To Use
- Set up Data Source: Configure a Google Sheet with the desired options for your dropdown. Alternatively, replace the Google Sheets Trigger with your preferred data source node.
- Configure Form Trigger: Customize the 'On form submission' node with your form title and fields. Ensure you have at least one dropdown field.
- Map Data: Use the 'Write JSON' code node to transform your data into the expected format for the dropdown options. The node expects an array of objects, each with a
valueproperty. - Update Workflow: The 'Replace values' Set node and 'n8n | get wf' / 'n8n | update' nodes work together to fetch the current workflow, inject the new dropdown options, and update the workflow definition.
- Test: Run the workflow in production mode to test the dynamic dropdown functionality.
Apps Used
Workflow JSON
{
"id": "a397e7a6-c7f0-4272-87ec-12a63769c358",
"name": "Form with Dynamic Dropdown Field",
"nodes": 0,
"category": "Form Automation",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
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ID: a397e7a6-c7f0...
About the Author
SaaS_Connector
Integration Guru
Connecting CRM, Notion, and Slack to automate your life.
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