CODEWITHSUNDEEP
pythondjangodjango-models
SPoage
SPoage

Reputation: 1097

Django Model Field Default to Null

I need to have my Django application allow me to have a default value of NULL set for a certain model field. I've looked over the null, blank, and default parameters, but it's not very clear what combination of the three I need to use to get the desired effect. I've tried setting default=NULL but it threw an error. If I specify blank=True, null=True and no default, will it just default back to NULL come runtime?

Upvotes: 91

Views: 104944

Answers (3)

Henning Lee
Henning Lee

Reputation: 584

  • blank=True allows you to input nothing (i.e "", None) and keep it empty.
  • null=True means the database row is allowed to be NULL.
  • default=None sets the field to None if no other value is given.

Upvotes: 29

Kevin
Kevin

Reputation: 686

If you specify null=True on the model field then the value will be stored as NULL in the database if the user does not provide a value.

Upvotes: 40

gruszczy
gruszczy

Reputation: 42228

Try default=None. There is no NULL in python.

Upvotes: 149

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