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## Add support for a multi-valued `genres` field - Update metadata source plugins to populates `genres` instead of `genre`: `musicbrainz`, `beatport`, `discogs`. - Remove now redundant `separator` configuration from `lastgenre`. ### Context We previously had multiple issues with maintaining both _singular_ and _plural_ fields: 1. Since both fields write and read the same field in music files, the values in both fields must be carefully synchronised, otherwise we see these fields being repeatedly retagged / rewritten using commands such as `beet write`. See [related issues](https://github.com/beetbox/beets/issues?q=label%3A"multi%20tags%22) 2. Fixes to sync logic required users manually retagging their libraries, while music imported _as-is_ could not be fixed. See #5540, for example. Therefore, this PR replaces a singular `genre` field by plural `genres` _for good_: 1. We migrate `genre` -> `genres` immediately on the first `beets` invocation 2. `genre` field is removed and `genres` is added 3. The old `genre` column in the database is left in place - these values will be ignored by beets. - If someone migrates and later decides to switch back to using an older version of beets, their `genre` values are still in place. ### Migration - This PR creates a new DB table `migrations(name TEXT, table TEXT)` - We add an entry when a migration has been fully performed on a specific table - Thus we only perform the migration if we don't have an entry for that table - Entry is only added when the migration has been performed **fully**: if someone hits CTRL-C during the migration, the migration will continue on the next beets invocation, see: ```py def migrate_table(self, table: str, *args, **kwargs) -> None: """Migrate a specific table.""" if not self.db.migration_exists(self.name, table): self._migrate_data(table, *args, **kwargs) self.db.record_migration(self.name, table) ``` - Implemented using SQL due to: 1. Significant speed difference: migrating my 9000 tracks / 2000 albums library: - Using our Python implementation: over 11 minutes - Using SQL: 2 seconds 2. Beets seeing only `genres` field: `genre` field is only accessible by querying the database directly. Supersedes: #6169 |
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.. image:: https://img.shields.io/pypi/v/beets.svg
:target: https://pypi.python.org/pypi/beets
.. image:: https://img.shields.io/codecov/c/github/beetbox/beets.svg
:target: https://codecov.io/github/beetbox/beets
.. image:: https://img.shields.io/github/actions/workflow/status/beetbox/beets/ci.yaml
:target: https://github.com/beetbox/beets/actions
.. image:: https://repology.org/badge/tiny-repos/beets.svg
:target: https://repology.org/project/beets/versions
beets
=====
Beets is the media library management system for obsessive music geeks.
The purpose of beets is to get your music collection right once and for all. It
catalogs your collection, automatically improving its metadata as it goes. It
then provides a suite of tools for manipulating and accessing your music.
Here's an example of beets' brainy tag corrector doing its thing:
::
$ beet import ~/music/ladytron
Tagging:
Ladytron - Witching Hour
(Similarity: 98.4%)
* Last One Standing -> The Last One Standing
* Beauty -> Beauty*2
* White Light Generation -> Whitelightgenerator
* All the Way -> All the Way...
Because beets is designed as a library, it can do almost anything you can
imagine for your music collection. Via plugins_, beets becomes a panacea:
- Fetch or calculate all the metadata you could possibly need: `album art`_,
lyrics_, genres_, tempos_, ReplayGain_ levels, or `acoustic fingerprints`_.
- Get metadata from MusicBrainz_, Discogs_, and Beatport_. Or guess metadata
using songs' filenames or their acoustic fingerprints.
- `Transcode audio`_ to any format you like.
- Check your library for `duplicate tracks and albums`_ or for `albums that are
missing tracks`_.
- Clean up crufty tags left behind by other, less-awesome tools.
- Embed and extract album art from files' metadata.
- Browse your music library graphically through a Web browser and play it in any
browser that supports `HTML5 Audio`_.
- Analyze music files' metadata from the command line.
- Listen to your library with a music player that speaks the MPD_ protocol and
works with a staggering variety of interfaces.
If beets doesn't do what you want yet, `writing your own plugin`_ is shockingly
simple if you know a little Python.
.. _acoustic fingerprints: https://beets.readthedocs.org/page/plugins/chroma.html
.. _album art: https://beets.readthedocs.org/page/plugins/fetchart.html
.. _albums that are missing tracks: https://beets.readthedocs.org/page/plugins/missing.html
.. _beatport: https://www.beatport.com
.. _discogs: https://www.discogs.com/
.. _duplicate tracks and albums: https://beets.readthedocs.org/page/plugins/duplicates.html
.. _genres: https://beets.readthedocs.org/page/plugins/lastgenre.html
.. _html5 audio: https://html.spec.whatwg.org/multipage/media.html#the-audio-element
.. _lyrics: https://beets.readthedocs.org/page/plugins/lyrics.html
.. _mpd: https://www.musicpd.org/
.. _musicbrainz: https://musicbrainz.org/
.. _musicbrainz music collection: https://musicbrainz.org/doc/Collections/
.. _plugins: https://beets.readthedocs.org/page/plugins/
.. _replaygain: https://beets.readthedocs.org/page/plugins/replaygain.html
.. _tempos: https://beets.readthedocs.org/page/plugins/acousticbrainz.html
.. _transcode audio: https://beets.readthedocs.org/page/plugins/convert.html
.. _writing your own plugin: https://beets.readthedocs.org/page/dev/plugins/index.html
Install
-------
You can install beets by typing ``pip install beets`` or directly from Github
(see details here_). Beets has also been packaged in the `software
repositories`_ of several distributions. Check out the `Getting Started`_ guide
for more information.
.. _getting started: https://beets.readthedocs.org/page/guides/main.html
.. _here: https://beets.readthedocs.io/en/latest/faq.html#run-the-latest-source-version-of-beets
.. _software repositories: https://repology.org/project/beets/versions
Contribute
----------
Thank you for considering contributing to ``beets``! Whether you're a programmer
or not, you should be able to find all the info you need at CONTRIBUTING.rst_.
.. _contributing.rst: https://github.com/beetbox/beets/blob/master/CONTRIBUTING.rst
Read More
---------
Learn more about beets at `its Web site`_. Follow `@b33ts`_ on Mastodon for news
and updates.
.. _@b33ts: https://fosstodon.org/@beets
.. _its web site: https://beets.io/
Contact
-------
- Encountered a bug you'd like to report? Check out our `issue tracker`_!
- If your issue hasn't already been reported, please `open a new ticket`_ and
we'll be in touch with you shortly.
- If you'd like to vote on a feature/bug, simply give a :+1: on issues you'd
like to see prioritized over others.
- Need help/support, would like to start a discussion, have an idea for a new
feature, or would just like to introduce yourself to the team? Check out
`GitHub Discussions`_!
.. _github discussions: https://github.com/beetbox/beets/discussions
.. _issue tracker: https://github.com/beetbox/beets/issues
.. _open a new ticket: https://github.com/beetbox/beets/issues/new/choose
Authors
-------
Beets is by `Adrian Sampson`_ with a supporting cast of thousands.
.. _adrian sampson: https://www.cs.cornell.edu/~asampson/