Fremdschlüssel zum Löschen von Argumenten

class Artist(models.Model):
    name = models.CharField(max_length=10)

class Album(models.Model):
    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)

class Song(models.Model):
    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
    album = models.ForeignKey(Album, on_delete=models.RESTRICT)
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