apache/airflow

Trigger form can be called via URL with fields pre-populated.

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#54800 opened on Aug 21, 2025

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area:UIgood first issuekind:feature

Description

Apache Airflow version

3.0.5

If "Other Airflow 2 version" selected, which one?

No response

What happened?

In Airflow 2.7++ it was possible to directly call the trigger form UI via a URL and with URL parameters also to pre-populate fields.

This feature is missing in Airflow 3 UI - and would be great to add it back again.

What you think should happen instead?

If you call http://localhost:28080/dags/example_params_ui_tutorial you can open the Dag directly.

Target would be to be able to call http://localhost:28080/dags/example_params_ui_tutorial/trigger (or similar) to directly open the trigger form when page is opened. If parameters in for key=value are passed, these are pre-filling the form data.

With this feature restored the documentation cleanup from https://github.com/apache/airflow/pull/54799 could be reversed as well

How to reproduce

Operating System

Versions of Apache Airflow Providers

No response

Deployment

Official Apache Airflow Helm Chart

Deployment details

No response

Anything else?

No response

Are you willing to submit PR?

  • Yes I am willing to submit a PR!

Code of Conduct

Contributor guide

Tech stack
pythonjavascriptreacttypescript
Domain
frontendfull stack
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
PythonJavaScriptReactAirflow UI
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
The issue requests restoring the ability to open a DAG trigger form via URL with pre populated fields, a feature present in Airflow 2.7+. The UI codebase resides in the `airflow/ui` directory (likely React/TypeScript). The linked PR #54799 (documentation cleanup) may provide context. The path routing logic in `airflow/ui/src/router/index.tsx` or similar needs to support a `/trigger` route with query parameters. The newbie should examine existing route definitions and form components (e.g., `TriggerDAG.tsx`) to implement pre fill from URL search params. Comments on the issue indicate interest and some discussion, so reviewing those may help clarify expected behavior.