Update Pull Request Description

GitHub action to add or update text in a pull request description.

• Input content can be raw text or a file to read from.
• A regex is used to match and replace text in the PR description. If no matches are found or the description body is empty the content is appended to the bottom of the PR description.

Quickstart

• Sample workflow:

  on:
    pull_request:
  
  jobs:
    update-pr-description:
      runs-on: ubuntu-latest
      steps:
        - name: Checkout
          uses: actions/checkout@v3
        - name: Do action
          uses: nephroflow/pr-description@v1
          with:
            content: "Hello there!"
            regex: "matchuntilthenend.*"
            regexFlags: i
            token: ${{ secrets.GITHUB_TOKEN }}

• Alternatively reading content from a file:

  on:
    pull_request:
  
  jobs:
    update-pr-description:
      runs-on: ubuntu-latest
      steps:
        - name: Checkout
          uses: actions/checkout@v3
        - name: Do action
          uses: nephroflow/pr-description@v1
          with:
            content: path/to/file.txt
            contentIsFilePath: true
            token: ${{ secrets.GITHUB_TOKEN }}

• Using a pull request template with comments to match via regex can be very useful. For example in your pull_request_template.md add

  <!-- start regex match -->
  
  Anything in between these comments will be replaced by a push to the PR.
  
  <!-- end regex match -->

  and in your workflow parameters

  content: "<!-- start regex match -->I am new content!<!-- end regex match -->"
  regex: "<!-- start regex match -->.*?<!-- end regex match -->"
  regexFlags: ims

References

• Creating a JavaScript action