[Feature] Add a way to retrieve main components from files_yaml with just one output

[V0lantis]

Is this feature missing in the latest version?

• I'm using the latest release

Is your feature request related to a problem? Please describe.

Taking the example in the README.md on master:

...
 # Example 1
      - name: Get all test, doc and src files that have changed
        id: changed-files-yaml
        uses: tj-actions/changed-files@v39
        with:
          files_yaml: |
            doc:
              - '**/*.md'
              - docs/**
              - README.md
            test:
              - test/**
              - '!test/**.md'
            src:
              - src/**
          # Optionally set `files_yaml_from_source_file` to read the YAML from a file. e.g `files_yaml_from_source_file: .github/changed-files.yml`

From the snippet above, I would like to have all the different components which have any modifed / changed files and to get just the name of the component. For example,

      - name: Return components which have a changed files
        run: |
          echo "Here are all the components which have changed files:"
          echo "List all the components that have changed: ${{ steps.changed-files-yaml.outputs.changed-components }}" # doc, test

Describe the solution you'd like?

If we have some changed files in doc, then the echo above would give us just doc as a result ect...

Describe alternatives you've considered?

No response

Anything else?

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

Thanks for reporting this issue, don't forget to star this project if you haven't already to help us reach a wider audience.

[jackton1]

Note: When using files_yaml* inputs ensure all outputs are prefixed by the key test_{...} e.g. test_added_files, test_any_changed

[V0lantis]

Thank you @jackton1, but actually, I need something else. Basically, I need to create a list of components that I will feed to a matrix, and I thought it would be more elegant if they would be such output from changed-files, directly re-using the name of the root object from the yaml we feed to changed-files. Please ask me to reformulate if I am not clear enough

[jackton1]

Yeah it's not clear you might have to use a working example

[jackton1]

Also note that you can also use the files input instead which would not require a key for each path your provide e.g

Instead of

      - name: Get all test, doc and src files that have changed
        id: changed-files-yaml
        uses: tj-actions/changed-files@v39
        with:
          files_yaml: |
            doc:
              - '**/*.md'
              - docs/**
              - README.md
            test:
              - test/**
              - '!test/**.md'
            src:
              - src/**
      - name: Run step if test file(s) change
        if: steps.changed-files-yaml.outputs.test_any_changed == 'true' 
        ...

You can use

      - name: Get all test files that have changed
        id: changed-files-yaml
        uses: tj-actions/changed-files@v39
        with:
          files: |
            test/**
            !test/**.md
      - name: Run step if test file(s) change
        if: steps.changed-files-yaml.outputs.any_changed == 'true' 
        ...

[jackton1]

Actually I just went through your request again I think you mean you want to know which key has changed files?

E.g

      - name: Get all test, doc and src files that have changed
        id: changed-files-yaml
        uses: tj-actions/changed-files@v39
        with:
          files_yaml: |
            doc:
              - '**/*.md'
              - docs/**
              - README.md
            test:
              - test/**
              - '!test/**.md'
            src:
              - src/**

If there are changes to the test/** files this should return a list like test ...

Is this the case @V0lantis ?

[V0lantis]

Thanks for thinking about it again @jackton1.
That's exactly what you just described above. And if there would be changes in test and src, we would have (with json output) ['test', 'src']

This would help me pass the output directly to a matrix job definition like in matrix-test example but instead of files we would directly have the name of the root yaml object

[jackton1]

Okay, this can be supported easily in that case.

[V0lantis]

I was trying to do it on my laptop but had some struggles setting up the local environment. Somehow, I needed to pass a hell lot of environment variables. I don't know if there was an easier way out

[jackton1]

Oh okay, sorry to hear that. Hopefully, the update simplifies things for you.

[jackton1]

@V0lantis This is now available using any of the following outputs changed_keys or modified_keys

[V0lantis]

Amazing, thank-you @jackton1 !