There are a number of places in the code where we have a list of entities. That means when things change, we have to update a lot of places, inevitably miss some and then we have bugs.

Fixing this is a bit complicated, since the list tends to vary depending on what exactly should be included and how "release group" should be written, but presumably something like a hash of data in the constants file with some functions for returning a matching list would work.

The ones I've found so far:

things with annotations

• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/EntityAnnotation.pm?at=beta#cl-116

things with MBIDs

• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Filters.pm?at=beta#cl-61

things with ratings

• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Editor.pm?at=beta#cl-116
• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Editor.pm?at=beta#cl-522

things with tags

• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Editor.pm?at=beta#cl-141
• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Editor.pm?at=beta#cl-513
• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Controller/Tag.pm?at=beta#cl-49 (and possibly the subs below that)
• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Controller/User.pm?at=beta#cl-426

things with subscriptions

• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Editor.pm?at=beta#cl-453
• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Editor.pm?at=beta#cl-554
• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Edit.pm?at=beta#cl-273 (except editor)

core entities

• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Edit.pm?at=beta#cl-109
• https://bitbucket.org/metabrainz/musicbrainz-server/src/eee20fd5b77b49966f0c4103174df36f1463b2ca/lib/MusicBrainz/Server/Data/Edit.pm?at=beta#cl-771