Обновил модель RecommendationPlaylist, исправил IndexView и изменил вид админки Playlist

music_storage/music/admin.py

@@ -91,6 +91,8 @@ class PlaylistAdmin(admin.ModelAdmin):
     search_fields = ("name",)
     list_filter = ("created_at",)
 
+    filter_horizontal = ("tracks",)
+
 
 @admin.register(RecommendationPlaylist)
 class RecommendationPlaylistAdmin(admin.ModelAdmin):

music_storage/music/migrations/0012_alter_recommendationplaylist_playlist.py

@@ -0,0 +1,19 @@
+# Generated by Django 6.0 on 2026-01-06 12:04
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('music', '0011_playlist_recommendationplaylist'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='recommendationplaylist',
+            name='playlist',
+            field=models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='recommendations', to='music.playlist'),
+        ),
+    ]

music_storage/music/models.py

@@ -101,7 +101,7 @@ class RecommendationPlaylist(BaseModel):
 
     name = models.CharField(max_length=200)
     description = models.TextField(blank=True)
-    playlist = models.ForeignKey(
+    playlist = models.OneToOneField(
         Playlist, on_delete=models.CASCADE, related_name="recommendations"
     )
     is_actual = models.BooleanField(default=False)