Revert "Revert "Fix #994: use PostgreSQL full-text-search""

This reverts commit 7b0db234e2.

api/funkwhale_api/music/models.py

@@ -11,6 +11,8 @@ import pydub
 from django.conf import settings
 from django.contrib.contenttypes.fields import GenericRelation
 from django.contrib.postgres.fields import JSONField
+from django.contrib.postgres.search import SearchVectorField
+from django.contrib.postgres.indexes import GinIndex
 from django.core.exceptions import ObjectDoesNotExist
 from django.core.files.base import ContentFile
 from django.core.serializers.json import DjangoJSONEncoder
@@ -19,7 +21,6 @@ from django.db.models.signals import post_save, pre_save
 from django.dispatch import receiver
 from django.urls import reverse
 from django.utils import timezone
-
 from versatileimagefield.fields import VersatileImageField
 
 from funkwhale_api import musicbrainz
@@ -56,10 +57,14 @@ class APIModelMixin(models.Model):
     api_includes = []
     creation_date = models.DateTimeField(default=timezone.now, db_index=True)
     import_hooks = []
+    body_text = SearchVectorField(blank=True)
 
     class Meta:
         abstract = True
         ordering = ["-creation_date"]
+        indexes = [
+            GinIndex(fields=["body_text"]),
+        ]
 
     @classmethod
     def get_or_create_from_api(cls, mbid):
@@ -171,7 +176,12 @@ class ArtistQuerySet(common_models.LocalFromFidQuerySet, models.QuerySet):
 
     def with_albums(self):
         return self.prefetch_related(
-            models.Prefetch("albums", queryset=Album.objects.with_tracks_count())
+            models.Prefetch(
+                "albums",
+                queryset=Album.objects.with_tracks_count().select_related(
+                    "attachment_cover", "attributed_to"
+                ),
+            )
         )
 
     def annotate_playable_by_actor(self, actor):
@@ -524,6 +534,9 @@ class Track(APIModelMixin):
 
     class Meta:
         ordering = ["album", "disc_number", "position"]
+        indexes = [
+            GinIndex(fields=["body_text"]),
+        ]
 
     def __str__(self):
         return self.title