Add comments to a PR with Github Actions

A simple action that allows you to add comments to the PR in your workflow.

You can do multiple comments during the workflow execution via different identifiers. See example bellow.

Inputs

Name	Description	Required	Default
message	Message that you want in the comment (markdown supported)	message or file
file	Filename of the message (file needs to be placed in .github/workflows/)	message or file
single_comment	Would you like to update the existing comment (if exists) instead of creating a new one every time?	no	true
identifier	Identifier that we put a comment in the comment so that we can identify them	no	GITHUB_ACTION_COMMENT_PR
github_token	GitHub token that we use to create/update commit	no	process.env.GITHUB_TOKEN

It's required to provide message or file input. If both are provided message input will be used.

Output

Name	Description	Return
commented	Reports status on comment creation	'true' / 'false'

Usage

Simple comment

uses: NejcZdovc/comment-pr@v2
with:
  message: "Hello world"
env:
  GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

Simple comment via file

uses: NejcZdovc/comment-pr@v2
with:
  file: "comment.md"
env:
  GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

The file should be placed in .github/workflows and it should be .md.

Passing data in md file

uses: NejcZdovc/comment-pr@v2
with:
  file: "comment.md"
env:
  GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
  DATA: 'year 2020'

When you need to pass data from the workflow info file you just define a new env variable. That will be automatically replaced in the template.

Example of comment.md that uses DATA env variable.

It's almost the end of {DATA}!

Multiple comments

By specifying different identifier per step we will now track two different comments, and they will be updated accordingly.

steps:
  - name: Checkout
    uses: actions/checkout@v3
  - name: Comment Checkout
    uses: NejcZdovc/comment-pr@v2
    with:
      message: "Checkout completed!"
      identifier: "GITHUB_COMMENT_CHECKOUT"
    env:
      GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
  - name: Get time
    uses: actions/github-script@v6
    id: get-time
    with:
        script: return new Date().toString()
        result-encoding: string
  - name: Comment time
    uses: NejcZdovc/comment-pr@v2
    with:
      message: "Execution time: `${{steps.get-time.outputs.result}}`"
      identifier: "GITHUB_COMMENT_SCRIPT"
    env:
      GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

In action

Checkout workflow in action in this repo, follow this link.

GitHub token

You can pass GitHub token two ways:

Via input

uses: NejcZdovc/comment-pr@v2
with:
  message: "Hello world"
  github_token: ${{secrets.GITHUB_TOKEN}}

Via environment variable

uses: NejcZdovc/comment-pr@v2
with:
  message: "Hello world"
env:
  GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

Bugs

Please file an issue for bugs, missing documentation, or unexpected behavior.

LICENSE

MIT