Django and Content Types

gistfile1.py

class FirstModel(models.Model):
    pass


class SecondModel(models.Model):
    pass


class BaseModel(models.Model):
    content_type = models.ForeignKey(ContentType)
    object_id = models.PositiveIntegerField()
    content_object = GenericForeignKey('content_type', 'object_id')

# Get by model
content_type = ContentType.objects.get_for_model(FirstModel)

# Get model class
model = content_type.model_class()

# ...
model.objects.all()

# Get by filtered object
content_type = ContentType.objects.get_for_model(FirstModel.objects.get(pk=1))

# Get by Model name
content_type = ContentType.objects.get(name='firstmodel')

# Get by Model id
content_type = ContentType.objects.get(pk=1)