[Answer]-Testing and creating objects with ForeignKey fields

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This is a question about ManyToMany fields, not ForeignKeys.

For an M2M, you can’t do it as part of create – you need to set it afterwards (because an m2m relationship is really a record in a third, linking, table, so you need the PK of the original model which you only get after it is created).

    john = speaker.objects.create(
        name = "John Smith",
        email = "john@john.com"
    )

    unit = talk.objects.create(
        title = "Writing unit tests",
        summary = "How to write unit tests",
    )

    unit.speakers.add(john)

I should also note that this is not a good unit test. The mechanics of model instance creation and saving is well tested by Django’s own tests. Your unit tests should test your actual logic.

👤Daniel Roseman

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