[music] Fix slow loading artist page

PROJECT.org

@@ -93,7 +93,7 @@ fetching and simple saving.
 :LOGBOOK:
 CLOCK: [2025-07-09 Wed 09:55]--[2025-07-09 Wed 10:15] =>  0:20
 :END:
-* Backlog [-2/11] :vrobbler:project:personal:
+* Backlog [1/14] :vrobbler:project:personal:
 ** TODO [#C] Add sentiment parsing for Scrobbles with notes :vrobbler:project:scrobbles:sentiment:
 :PROPERTIES:
 :ID:       37781d6a-f3b0-48b2-bf98-33c2c791cf85
@@ -489,6 +489,25 @@ whatever time KoReader reports, we need to know, given the date and the user
 profile's historic timezone, how many hours to adjust the KoReader time to get
 to GMT to save it in the database.
 
+** DONE [#B] Adjust how similar artists are shown :feature:templates:artists:music:
+:PROPERTIES:
+:ID:       2a081620-a0a2-4851-a7cf-4043f9c2ee31
+:END:
+
+*** Description
+
+Currently we show the top 10 similar artists on the Artist detail page linked to
+the artist detail page on Vrobbler.
+
+First off, this is very slow. We should look into speeding up the rendering of
+the similar artists widget.
+
+Second, the artist name in the similar artist list should be a link to the
+Vrobbler artist detail page, but there should also be a [musicbrainz] link next
+to it, that links out to the musicbrainz page whether we have the artist in the
+Vrobbler database or not.
+
+
 * Version 39.3 [2/2]
 ** DONE [#A] Issue found when doing a release :bug:tooling:release:cicd:
 :PROPERTIES:

vrobbler/apps/music/views.py

@@ -19,11 +19,7 @@ class ArtistListView(generic.ListView):
     paginate_by = 100
 
     def get_queryset(self):
-        qs = (
+        qs = super().get_queryset().annotate(scrobble_count=Count("track__scrobble"))
-            super()
-            .get_queryset()
-            .annotate(scrobble_count=Count("track__scrobble"))
-        )
         genre = self.request.GET.get("genre")
         if genre:
             qs = qs.filter(theaudiodb_genre=genre)
@@ -82,26 +78,30 @@ class ArtistDetailView(generic.DetailView):
 
         similar = artist.similar_artists or []
         if similar:
-            mbids = [sa["artist_mbid"] for sa in similar if sa.get("artist_mbid")]
+            top = similar[:10]
+            mbids = [sa["artist_mbid"] for sa in top if sa.get("artist_mbid")]
             local_artists = {
                 a.musicbrainz_id: a
                 for a in Artist.objects.filter(musicbrainz_id__in=mbids)
             }
-            for sa in similar:
+            for sa in top:
                 local = local_artists.get(sa.get("artist_mbid"))
                 sa["local_url"] = local.get_absolute_url() if local else None
-            context_data["similar_artists"] = similar
+                sa["musicbrainz_url"] = (
+                    f"https://musicbrainz.org/artist/{sa['artist_mbid']}"
+                    if sa.get("artist_mbid")
+                    else None
+                )
+            context_data["similar_artists"] = top
 
         if artist.theaudiodb_genre:
-            context_data["genre_count"] = (
+            context_data["genre_count"] = Artist.objects.filter(
-                Artist.objects.filter(theaudiodb_genre=artist.theaudiodb_genre)
+                theaudiodb_genre=artist.theaudiodb_genre
-                .count()
+            ).count()
-            )
         if artist.theaudiodb_mood:
-            context_data["mood_count"] = (
+            context_data["mood_count"] = Artist.objects.filter(
-                Artist.objects.filter(theaudiodb_mood=artist.theaudiodb_mood)
+                theaudiodb_mood=artist.theaudiodb_mood
-                .count()
+            ).count()
-            )
 
         return context_data
 

vrobbler/templates/music/artist_detail.html

@@ -53,13 +53,15 @@
                 <tr>
                     <th scope="col">Artist</th>
                     <th scope="col">Score</th>
+                    <th scope="col"></th>
                 </tr>
             </thead>
             <tbody>
-                {% for sa in similar_artists|slice:":10" %}
+                {% for sa in similar_artists %}
                 <tr>
                     <td>{% if sa.local_url %}<a href="{{sa.local_url}}">{{sa.name}}</a>{% else %}{{sa.name}}{% endif %}</td>
                     <td>{{sa.score}}</td>
+                    <td>{% if sa.musicbrainz_url %}<a href="{{sa.musicbrainz_url}}">musicbrainz</a>{% endif %}</td>
                 </tr>
                 {% endfor %}
             </tbody>