Trigger form can be called via URL with field pre-populated issue is resolved.

[Thanush-03]

I have successfully implemented the trigger form URL feature for Airflow 3, which addresses Issue #54800. This feature restores the functionality that was available in Airflow 2.7+ but was missing in Airflow 3, allowing users to directly access the trigger form via URL with pre-populated fields.

Key Features Implemented

1. Direct URL Access
   New route: /dags/{dagId}/trigger
   Full-page trigger form accessible via direct URL
   Added "Trigger" tab to DAG details page
2. URL Parameter Support
   The trigger form now supports these URL parameters:
   conf: JSON configuration string for DAG run parameters
   dag_run_id: Custom run ID for the DAG run
   logical_date: Logical date for the DAG run (ISO format)
   note: Note/description for the DAG run.

Modified Files:

airflow-core/src/airflow/ui/src/router.tsx - Added trigger route
airflow-core/src/airflow/ui/src/pages/Dag/Dag.tsx - Added trigger tab
airflow-core/src/airflow/ui/src/pages/Dag/index.ts - Added Trigger export
airflow-core/src/airflow/ui/public/i18n/locales/en/dag.json - Added trigger translation

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contributors' Guide (https://github.com/apache/airflow/blob/main/contributing-docs/README.rst)
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[Thanush-03]

@jscheffl
@shubhamraj-git
@pierrejeambrun
@bbovenzi
@ryanahamilton
kindly, provide review to my first pull request.

[jscheffl]

Sorry, this PR does not even build the software. It is also mis-understanding the UI concepts we already have.

I am not sure whether the code is generated by AI but in this way it can not be accepted.

Can you please re-work?

Target would be:

• Trigger form is existing, it is about pre-populating values. Not another tab in the panel UI
• Values should not need an encoded JSONbut as the ticket described a list of optional key=value pairs
• The code compiles.

Please also add a screenshot or small video of how it looks for easier review.

[jscheffl]

Please do not add such MD files. This can go into the PR description. But we don't want to merge these file description to codebase.

[jscheffl]

Same here.

[jscheffl]

It was not the intend by this missing feature to add a new tab, The trigger form is opened as a modal already.

[jscheffl]

Please do not add another form

[guan404ming]

Thanks for the PR. But you may misunderstand what we need in this issue. You could take a look at this #54783 which try to finish similar task but in different form and also the FlexibleForm related component and functions. After that, I think you could understand how and what to do next. Feel free to ask anything!

[Thanush-03]

sorry, i am beginner so i tried it,since it looks like a easy one.

[jscheffl]

sorry, i am beginner so i tried it,since it looks like a easy one.

No worry, you can still make it. Or you pass the ball to @Thanush-03 who also opted-in for it. But also no pressure is not a critical feature and depending on individual pre-knowledge a simple task can be also complex for somebody else. All is included with some learning.

[Thanush-03]

sir, can you provide the session details of this organisation was going in online so i can learn from that and also can you guide me

[jscheffl]

sir, can you provide the session details of this organisation was going in online so i can learn from that and also can you guide me

I am not sure which organisation you mean? We have some contributing guides, for UI for example https://github.com/apache/airflow/blob/main/contributing-docs/15_node_environment_setup.rst but also worth reading the other docs.

[github-actions]

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