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djangosingle-table-inheritance

Is this how django does Single Table Inheritance?

In this SO question I see the following:

class MediaContent(models.Model):
    uploader = models.ForeignKey(User)
    title = models.CharField(max_length=100)
    created = models.DateTimeField(auto_now_add=True)

    def draw_item(self):
        pass

    class Meta:
        abstract = True

class Picture(MediaContent):
    picture = models.ImageField(upload_to='pictures')

class Video(MediaContent):
    identifier = models.CharField(max_length=30) #youtube id

I have done some STI in Rails before, but never in django. Is this how it's done in django? Will it only create one table having all the fields in all the models? Will it add a type column?

Solution

  • There will be two tables created, one for Picture, and one for Video. It will not be possible to create a query that returns both types.

    "Abstract base classes"