Now, display, search fields, filtering are available.

homepage/admin.py

@@ -7,12 +7,24 @@ class ArtistAdmin(admin.ModelAdmin):
     # for list_display
     list_display = ('artist_name', 'birth_name', 'monthly_listeners')
 
+    # search_fields
+    search_fields = ('artist_name', 'birth_name')
+
+    # filtering
+    list_filter = ('artist_name', 'birth_name')
+
 class AlbumAdmin(admin.ModelAdmin):
     model = Album
 
     # for list_display
     list_display = ('album_name', 'description', 'release_date', 'label', 'song_count')
 
+    # search_fields
+    search_fields = ('album_name', 'description', 'label')
+
+    # filtering
+    list_filter = ('album_name',)
+
 
 class SongAdmin(admin.ModelAdmin):
     model = Song
@@ -20,6 +32,12 @@ class SongAdmin(admin.ModelAdmin):
     # for list_display
     list_display = ('song_title', 'song_length', 'lyrics', 'music_video')
 
+    # search_fields
+    search_fields = ('song_title', 'lyrics')
+
+    # filtering
+    list_filter = ('song_title',)
+
 admin.site.register(Artist, ArtistAdmin)
 admin.site.register(Album, AlbumAdmin)
 admin.site.register(Song, SongAdmin)