Attach to Trello Card action

The purpose of this action is to enable attaching a pull request to a Trello card, from within the PR body. This is best used with the Trello Github Power-Up added to your Trello Boards. With that enabled, this effectively enables the "Attach Pull Request" action of the Power-Up, but from the Github side (and via a quick URL copy-paste instead of clicking through menus).

The action looks for a Trello card URL at the start of a Pull Request description. If found, it will add the PR URL as an attachment to Trello.

Optionally, this can be configured to also attach a (redundant) PR comment with link/name, similar to what the Trello Power-up will do, for use cases requiring that.

Events

Workflows using this action should include some/all of the following supported event types:

• pull_request.opened
• pull_request.reopened
• pull_request.edited

Unsupported actions are ignored.

Inputs/Outputs

This requires Trello key and token to be supplied from the workflow where used. The token, at least, should come from repo Secrets.

There are no outputs.

Example workflow config:

name: Attach to Trello
on:
  pull_request:
    types: [opened, reopened, edited]
jobs:
  attach-trello:
    runs-on: ubuntu-latest
    name: Find trello link and attach to card
    steps:
      - uses: delivered/attach-to-trello-card-action@master
        with:
          trello-key: ${{ secrets.TRELLO_KEY }}
          trello-token: ${{ secrets.TRELLO_TOKEN }}
          
          ## optional
          # add-pr-comment: true
          ## required if add-pr-comment is true.  secrets.GITHUB_TOKEN is supplied by GH action implicitly.
          # repo-token: ${{ secrets.GITHUB_TOKEN }}