Github action not triggered when github-actions bot makes pull request.

[emewjin]

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I wrote a GitHub Action to send a Slack message when the main target PR is opened or edited.
However, the action doesn't get triggered only when the github-actions bot creates the PR.
It doesn't even run, let alone fail.
Github Action runs fine when I create PR myself.

Here is my full github action yaml. Why this happens and how can I fix it?

name: sample

on:
  pull_request:
    branches:
      - main
    types: [opened, edited]

jobs:
  first:
    runs-on: ubuntu-latest
    steps:
      - name: Send slack message when pr opened
        uses: slackapi/slack-github-action@v1.23.0
        with:
          payload: |
            {
              "pr": "${{ github.event.pull_request.html_url }}"
            }
        env:
          SLACK_WEBHOOK_URL: ${{ secrets. }}

[airtower-luna]

I assume the workflow that creates the PR uses the GITHUB_TOKEN to authorize that? That'd prevent any workflows from being triggered, as described in the documentation:

When you use the repository's GITHUB_TOKEN to perform tasks, events triggered by the GITHUB_TOKEN, with the exception of workflow_dispatch and repository_dispatch, will not create a new workflow run.

[pdonorio]

What would be the way to create a PR and trigger workflows instead?

[airtower-luna]

Use a PAT to authorize making the PR instead (see Granting additional permissions in the linked docs).