Github Action : Stop the action if PR already exists-CodePudding

I am creating auto PR via GitHub action, So whenever a new push happens on dev branch. automatically a PR is created from dev to master

I want to change: If already a PR exists ( master <- dev ) no need to run this action, so how can I check if already PR exists?

Github Action

name: Pull Request Action
on:
    push:
        branches: ['dev']

jobs:
    create-pull-request:
        runs-on: ubuntu-latest
        steps:
            - name: Create Pull Request
              uses: actions/github-script@v6
              with:
                  script: |
                      const { repo, owner } = context.repo;
                      const result = await github.rest.pulls.create({
                        title: 'Master Sync : Auto Generated PR',
                        owner,
                        repo,
                        head: '${{ github.ref_name }}',
                        base: 'master',
                        body: [
                          'This PR is auto-generated by',
                          '[actions/github-script](https://github.com/actions/github-script).'
                        ].join('\n')
                      });
                      github.rest.issues.addLabels({
                        owner,
                        repo,
                        issue_number: result.data.number,
                        labels: ['feature', 'automated pr']
                      });

CodePudding user response：

There's no condition that you could use directly in an if step on the job itself, but you could use the GitHub CLI to see if there is such a PR already, and then exit early:

steps:
  - name: Check if PR exists
    id: check
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    run: |
      prs=$(gh pr list \
          --repo "$GITHUB_REPOSITORY" \
          --json baseRefName,headRefName \
          --jq '
              map(select(.baseRefName == "master" and .headRefName == "dev"))
              | length
          ')
      if ((prs > 0)); then
          echo "::set-output name=skip::true"
      fi

  - name: Create pull request
    if: '!steps.check.outputs.skip'
  # ...