How to run merge request pipelines on source branch and merged_result

GitLab CI/CD
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1

Hello,

I would like to use the merge trains and also the merged result pipeline. Both are very good features. I would also like to use a branch pipeline with the source branch of the merge request, for example when the merge request is still in draft status.

Unfortunately, I can’t find any hint in the documentation on how to solve this problem. GitLab always starts a merged result pipeline:

$CI_PIPELINE_SOURCE = merge_request_event
$CI_MERGE_REQUEST_EVENT_TYPE = merged_result

The variable CI_MERGE_REQUEST_EVENT_TYPE never has the value detached when I push to the source branch of the merge request.

I handle the pipelines as follows:

workflow:
  rules:
    # When a push is made on the default branch, we always want to start the pipeline
    - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
      when: always

    # When a push is made on the main branch, we always want to start the pipeline
    - if: '$CI_COMMIT_BRANCH == "main"'
      when: always

    # Creates a pipeline when a merge request is created/updated
    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
      when: always

    # No pipeline is created if there are open merge requests on this branch
    - if: '$CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS'
      when: never

    # When a push is made on a branch, we always want to start the pipeline
    - if: '$CI_COMMIT_BRANCH'
      when: always

How do I set the workflow of a pipeline so that there is a pipeline

  1. for a branch, if there is no merge request for the branch
  2. for the branch of a merge request, if the merge request is in draft status
  3. for a merged result, if the merge request is in ready status?