I'm creating a django application which uses both the Django Rest Framework and the plain django-views as entrypoint for users.
I want to do validation both independant fields of my models, and on objects on a whole. For example:
Field: is the entered licence-plate a correct one based on a regex function. No relation to other fields.
Object: Is the entered zipcode valid for the given country. Relates to zipcode and country in the model.
For the DRF-API i use ModelSerializers which automatically call all the validators i have placed in my Model, for example:
class MyModel(models.Model):licence_plate = CharField(max_length=20, validators=[LicencePlateValidator])
Since the validator is given in the model, the API POSTS (because i use a ModelSerializer), as well as the objects created in the django admin backend are validated.
But when i want to introduce object level validation i need to do that in the serializer's validate()-method, which means objects are only validated in the API.
I'll have to override the model's save method too, to validate the objects created in the Django admin page.
Question: This seems a bit messy to me, is there a single point where i can put the object-level validators so that they are run at the API and in the admin-page, like i did with the field-level validation (I only have to put them in my model-declaration and everything is handled)