Schema Editor's add_field not able to add foreign key field

[Akash Agrawal]

When I try to add a foreign key field with the "to" parameter as a string instead of the model object, it is not able to create the field and instead throws a ValueError saying that it was unable to resolve the related model.

[Mariusz Felisiak]

Yes that how it works you need to provide a model. django.db.migrations contains the login for calculating and storing what operations should be run. SchemaEditor is the database abstraction layer that turns things like “create a model” or “delete a field” into SQL. You shouldn't ​interact directly with SchemaEditor as a normal developer using Django.

[Akash Agrawal]

Oh! Actually I was working on a feature where i could add a foreign key dynamically using Schema Editor. I assumed it would provide all the features of Django ORM for the field. Can this is be documented in Schema Editor documentation? Shall i create a new issue for the same?

[Mariusz Felisiak]

Can this is be documented in Schema Editor documentation?

I see no reason to document that. We cannot document the entire django.db.migrations's logic in the SchemaEditor docs.