fixed an issue with the model filters and added string functions to the models

ronrodillas_music/about/admin.py

@@ -14,14 +14,14 @@ class AlbumAdmin(admin.ModelAdmin):
 
     list_display = ("album_name", "description", "release_date", "label", "song_count")
     search_fields = ("album_name", "description", "label")
-    list_filter = ("album_name")
+    list_filter = ("album_name",)
     
 class SongAdmin(admin.ModelAdmin):
     model = Song
 
     list_display = ("song_title", "song_length", "lyrics", "music_video")
     search_fields = ("song_title", "lyrics")
-    list_filter = ("song_title")
+    list_filter = ("song_title",)
 
 admin.site.register(Artist, ArtistAdmin)
 admin.site.register(Album, AlbumAdmin)

ronrodillas_music/about/migrations/0001_initial.py

+# Generated by Django 4.1.7 on 2023-02-21 11:10
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Album',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('album_name', models.CharField(max_length=100)),
+                ('description', models.TextField()),
+                ('release_date', models.DateField()),
+                ('label', models.CharField(max_length=100)),
+                ('song_count', models.IntegerField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Artist',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('artist_name', models.CharField(max_length=100)),
+                ('birth_name', models.CharField(max_length=100)),
+                ('bio', models.CharField(max_length=700)),
+                ('monthly_listeners', models.IntegerField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Song',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('song_title', models.CharField(max_length=100)),
+                ('song_length', models.IntegerField()),
+                ('music_video', models.BooleanField(default=False)),
+                ('lyrics', models.TextField()),
+                ('album', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='about.album')),
+                ('artist', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='about.artist')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='album',
+            name='artist',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='about.artist'),
+        ),
+    ]

ronrodillas_music/about/models.py

@@ -7,6 +7,8 @@ class Artist(models.Model):
     bio = models.CharField(max_length=700)
     monthly_listeners = models.IntegerField()
     
+    def __str__(self):
+        return '{}'.format(self.artist_name)
 class Album(models.Model):
     album_name = models.CharField(max_length=100)
     artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
@@ -15,6 +17,9 @@ class Album(models.Model):
     label = models.CharField(max_length=100)
     song_count = models.IntegerField()
 
+    def __str__(self):
+        return '{}'.format(self.album_name)
+        
 class Song(models.Model):
     song_title = models.CharField(max_length=100)
     artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
@@ -22,4 +27,7 @@ class Song(models.Model):
     song_length = models.IntegerField()
     music_video = models.BooleanField(default=False)
     lyrics = models.TextField()
+    
+    def __str__(self):
+        return '{}'.format(self.song_title)
     
\ No newline at end of file