Django error “You are trying to add a non-nullable field to submission without a default

You are trying to add a non-nullable field ‘owner’ to submission without a default; we can’t do that (the database needs something to populate existing rows).
Please select a fix:
1) Provide a one-off default now (will be set on all existing rows)
2) Quit, and let me add a default in

This is a common error in Django. Django will prevent a non-null field to be used except a default value is provided, alternatively the field is declared nullable.

To fix issue, you can either do one of the following:

user = models.ForeignKey(User, related_name='User', null=True)

or use the default user:

user = models.ForeignKey(User, related_name='User', default=<have your default user id here>)

About Matthias 33 Articles
I am a Software Engineer from Houston, TX who love to write codes that brings great ideas to live. In my professional life, I have created software for different industries including Oil & Gas, Finance, Service Provider, Cloud Computing and Embedded Systems. When not writting codes, i enjoy travelling, good music and photography. You can reach me at

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