matrix-from-previous-job-output-2.yml

name: matrix-from-previous-job-output-2
on:
  pull_request:

jobs:
  setup:
    outputs:
      DEV_CHANGED: ${{ steps.changed-files-yaml.outputs.dev_any_changed }}
      PROD_CHANGED: ${{ steps.changed-files-yaml.outputs.prod_any_changed }}
      CHANGED_ENVS: ${{ steps.matrix.outputs.CHANGED_ENVS }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
        with:
          fetch-depth: 0  # OR "2" -> To retrieve the preceding commit.

      - name: get all changes for static/dev and static/prod
        id: changed-files-yaml
        uses: tj-actions/changed-files@v39
        with:
          files_yaml: |
            dev:
              - 'static/dev/**'
            prod:
              - 'static/prod/**'
      - id: matrix
        run: |
          echo "dev: ${{ steps.changed-files-yaml.outputs.dev_any_changed }}" >> "$GITHUB_STEP_SUMMARY"
          echo "prod: ${{ steps.changed-files-yaml.outputs.prod_any_changed }}" >> "$GITHUB_STEP_SUMMARY"
          echo "CHANGED_ENVS=$(echo "[{\"env\": \"dev\", \"changed\": ${{ steps.changed-files-yaml.outputs.dev_any_changed }}}, {\"env\":\"prod\", \"changed\": ${{ steps.changed-files-yaml.outputs.prod_any_changed }} }]" | jq -c 'map(select( .changed ).env)')" >> "$GITHUB_OUTPUT"

  execute:
    if: needs.setup.outputs.CHANGED_ENVS != '[]'
    strategy:
      matrix:
        env: ${{ fromJson(needs.setup.outputs.CHANGED_ENVS) }}
    runs-on: ubuntu-latest
    needs: [setup]
    # if: ${{ matrix.env == 'dev' }} ❌ matrix value can be used only in steps
    steps:
      - run: |
          echo "matrix: ${{ matrix.env }}"