Custom Pr_number after merge to master not working

[starverdiyev]

Hello!

I have got simple workflow:

on:
  workflow_dispatch:
    inputs:
      action:
        required: true
        default: "deploy"
        type: choice
        options:
        - test1
        - test

  push:
    branches:
      - master

      - name: Comment to PR with action link 
        uses: thollander/actions-comment-pull-request@v2
        with:
          message: |
             Deploy Begins! Actions URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
          pr_number: ${{ github.event.pull_request.number }} 
          GITHUB_TOKEN: ${{ secrets.COMMENT_TOKEN }}

After merge to master, I need to post commit on PR, which was merged to master. In action log I see, that it's now pr_number env:

Run thollander/actions-comment-pull-request@v2
  with:
    message: Deploy Begins! Actions URL: https://github.com/*]
  
    GITHUB_TOKEN: ***
    mode: upsert
    create_if_not_exists: true
Error: No issue/pull request in input neither in current context.

Is any ideas, why pr_number did not set?

Thank you!

[starverdiyev]

It was a problem to get PR number after merge in master with push event. Found this way, it works well.

Thanks!

[RDhar]

Here's a working snippet to get the issue number in both push and pull_request events within a GitHub Actions workflow by leveraging actions/github-script:

steps:
  - uses: actions/github-script@v6
    id: get_issue_number
    with:
      script: |
        if (context.issue.number) {
          // Return issue number if present
          return context.issue.number;
        } else {
          // Otherwise return issue number from commit
          return (
            await github.rest.repos.listPullRequestsAssociatedWithCommit({
              commit_sha: context.sha,
              owner: context.repo.owner,
              repo: context.repo.repo,
            })
          ).data[0].number;
        }
      result-encoding: string
  - name: Issue number
    run: echo '${{steps.get_issue_number.outputs.result}}'

The script queries the list labels for an issue REST API endpoint via octokit/rest.js client.

[nelsonprsousa]

If anyone is wondering how to get a complete, yet working, yml file, here it is:

name: 'Your awesome new GA'

on:
  push:
    branches:
      - main
jobs:
  pr-number:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: read
    steps:
      - uses: actions/github-script@v7
        id: get_pr_data
        with:
          script: |
              return (
                await github.rest.repos.listPullRequestsAssociatedWithCommit({
                  commit_sha: context.sha,
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                })
              ).data[0];
      - name: Pull Request data
        run: |
          echo '${{ fromJson(steps.get_pr_data.outputs.result).number }}'
          echo '${{ fromJson(steps.get_pr_data.outputs.result).title }}'

Please notice that both permissions (contents: read and pull-requests: read) are mandatory.