Django test fixtures and content types

Question

I'm using django's ContentType foreign key in my model, and I'm using it in the fixtures for unit tests.

Therefore, I have to hard-code content_type_id in my fixture, but django sometimes initializes it to a different value and thus my tests fail.

So is there a way to safely predict the content_type_id of the model or any other proper way to handle such situations?

Answer 1

Use natural keys: https://docs.djangoproject.com/en/dev/topics/serialization/#natural-keys

Most of the documentation refers to how to add the capability to your own models, but ContentType already supports them so just add --natural-foreign to your dumpdata management command:

$ python manage.py dumpdata myapp --indent=4 --natural-foreign