foreign key on delete arguments
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)
Here is what the above code is Doing:
1. Create a model called Artist.
2. Create a model called Album.
3. Create a model called Song.
4. Add a foreign key to the Album model that points to the Artist model.
5. Add a foreign key to the Song model that points to the Artist model.
6. Add a foreign key to the Song model that points to the Album model.
