SFI: Add comment for song arrangement

[BiKi05]

There is the possibility to add comments to song arrangements, we would like to have this comments in the API interface.

Unfortunately the comment cannot be requested by the Rest-API, only via the old AJAX API (not documented, only found via browser debugging):
https://xxx.church.tools/?q=churchservice/ajax&func=getComments&domain_type=arrangement&domain_id=<arrangement_id>

Would be great if you add this to your code.

[BiKi05]

Additional comment/explanation:

Actually we want to have a comment (globally) for a song and not only for an arrangement, but this is not possible in Churchtools. There is a database field which cannot be set via browser or API, see https://forum.church.tools/topic/9841/bemerkung-zu-song

So we use the comments at the arragement as workaroud - I know, there is the possibility to set a comment on an arrangement and read via API, but our users always use the comment function, as it is more easy to find/use.

[DumbergerL]

@BiKi05 I implemented the feature in the PR #187 You can get more detailed information on how to use this feature in the docs: https://github.com/5pm-HDH/churchtools-api/blob/master/docs/out/SongAPI.md#retrieve-create-and-delete-comments

Sorry, it took so long.

[BiKi05]

@DumbergerL Big thanks! I will test and integrate it soon.

[DumbergerL]

Update August 2024:

Churchtools replaced the AJAX Api with a REST Endpoint: https://github.com/5pm-HDH/churchtools-api/blob/master/docs/out/SongAPI.md#create-song-arrangement-notes

New implementation: NoteRequest