added new fields in models + modified admin.py

albert_music/about/admin.py

+from django.contrib import admin
+
+# Register your models here.

albert_music/about/models.py

@@ -3,17 +3,24 @@ from django.db import models
 # Create your models here.
 
 class Artist(models.Model):
-    artist_name = models.CharField(max_length=100, unique=True)
-    monthly_listeners = models.IntegerField()
+    artist_name = models.CharField(max_length=50, unique=True)
+    monthly_listeners = models.PositiveIntegerField()
+    birth_name = models.CharField(max_length=100, unique=True)
+    bio = models.TextField(max_length = 700)
 
-class Album(models.Model):
-    artist = models.CharField(max_length=100,unique=True)
-    album_name = models.CharField(max_length=100, unique=True)
+
+class Album(Artist):
+    artist = models.CharField(max_length=50,unique=True)
+    album_name = models.CharField(max_length=50, unique=True)
     description = models.TextField()
     release_date = models.DateField()
+    label = models.CharField()
+    song_count = models.PositiveIntegerField()
 
-class Song(models.Model):
-    song_title = models.CharField(max_length=100, unique=True)
+class Song(Album):
+    song_title = models.CharField(max_length=50, unique=True)
     artist = models.CharField(max_length=50)
     description = models.TextField()
-    song_length = models.IntegerField()
\ No newline at end of file
+    song_length = models.PositiveIntegerField()
+    music_video = models.BooleanField(default=False)
+    lyrics = models.TextField()

albert_music/homepage/admin.py

 from django.contrib import admin
 
 # Register your models here.
+
+from about.models import Artist, Album, Song
+
+class ArtistAdmin(admin.ModelAdmin):
+	model = Artist
+
+class AlbumAdmin(admin.ModelAdmin):
+	model = Album
+
+class SongAdmin(admin.ModelAdmin):
+	model = Song
+
+admin.site.register(Artist, ArtistAdmin)
+admin.site.register(Album, AlbumAdmin)
+admin.site.register(Song, SongAdmin)