Form with dynamic dropdown field

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This workflow creates a customizable form with a dynamic dropdown field that automatically updates its options from an external data source. How it works The workflow polls an external data source ...

Best for

Miscellaneous automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.n8n, n8n-nodes-base.formtrigger, n8n-nodes-base.googlesheetstrigger, n8n-nodes-base.executeworkflow, n8n-nodes-base.stickynote, n8n-nodes-base.code, n8n-nodes-base.set, n8n-nodes-base.googlesheets

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Obsidi8n.

Original n8n.io source

1.1 Workflow description

Title: Form with dynamic dropdown field
Workflow name: Form with dynamic dropdown field

This workflow creates a customizable form with a dynamic dropdown field that automatically updates its options from an external data source.

How it works

The workflow polls an external data source (Google Sheets in this example) at regular intervals
New values are processed and formatted for the dropdown
The form automatically updates with the new dropdown options

Set up steps

Configure your data source:

Default setup uses Google Sheets
- replace with credentials for your sheet
- set up the update frequency
Or modify to use any other data source (API, database, etc.)

Adjust the form configuration:

Customize the form title and description
Add or modify form fields as needed
The template includes the dropdown field by default

Connect form submissions:

Use the "Execute Workflow" node to process form submissions

This template provides a foundation for creating dynamic forms that stay synchronized with your data sources, making it ideal for situations where dropdown options need to reflect current data.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - n8n | get wf

Type / Role: n8n-nodes-base.n8n - n8n
Config choices: Version 1

Block 2 - n8n | update

Type / Role: n8n-nodes-base.n8n - n8n
Config choices: Version 1

Block 3 - On form submission

Type / Role: n8n-nodes-base.formTrigger - formTrigger
Config choices: Version 2.2

Block 4 - Google Sheets Trigger

Type / Role: n8n-nodes-base.googleSheetsTrigger - googleSheetsTrigger
Config choices: Version 1

Block 5 - Execute Workflow

Type / Role: n8n-nodes-base.executeWorkflow - executeWorkflow
Config choices: Version 1.1

Block 6 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 7 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 8 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 9 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 10 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 11 - Sticky Note5

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 12 - Sticky Note6

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 13 - Write JSON

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 14 - Replace values

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 15 - Get all values

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 16 - Format to 'values'

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

3. Summary Table

Workflow	Form with dynamic dropdown field
Complexity	advanced
Nodes	16
Categories	Miscellaneous
Author	Obsidi8n
Published	09 Jan 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/2712/2712.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Miscellaneous workflows

Frequently asked questions

What does Form with dynamic dropdown field do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Miscellaneous use case.

Obsidi8n

5 workflows

Nodes

n8n-nodes-base.n8n n8n-nodes-base.formtrigger n8n-nodes-base.googlesheetstrigger n8n-nodes-base.executeworkflow n8n-nodes-base.stickynote n8n-nodes-base.code n8n-nodes-base.set n8n-nodes-base.googlesheets

Complexity

advanced

Published 09 Jan 2025

Likes 0

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Install path: /data/workflows/2712/2712.json

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Form with dynamic dropdown field

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Set up steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - n8n | get wf

Block 2 - n8n | update

Block 3 - On form submission

Block 4 - Google Sheets Trigger

Block 5 - Execute Workflow

Block 6 - Sticky Note

Block 7 - Sticky Note1

Block 8 - Sticky Note2

Block 9 - Sticky Note3

Block 10 - Sticky Note4

Block 11 - Sticky Note5

Block 12 - Sticky Note6

Block 13 - Write JSON

Block 14 - Replace values

Block 15 - Get all values

Block 16 - Format to 'values'

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions