What’s the Difference Between null=True and blank=True in Django?

Use Cases

• null=True:

  Use this when you want Django to store NULL in the database for empty values. This is typically used for non-string fields like DateTimeField, ForeignKey, etc.
   

• blank=True:

  Use this to allow empty input in Django forms. It’s required for user-facing interfaces where the field is optional.
   

• Together:

  You usually use both when a field is truly optional:

Important Notes

• For string-based fields (CharField, TextField), Django recommends:

   

  • Use blank=True only.

  • Avoid null=True, because Django stores empty strings ("") rather than NULLs.

  • This avoids having two “empty” values: NULL and "", which can lead to confusion.

Quick Example

Reference

• https://stackoverflow.com/questions/8609192/what-is-the-difference-between-null-true-and-blank-true-in-django
   
• https://docs.djangoproject.com/en/5.2/ref/models/fields/
   
• https://sentry.io/answers/django-difference-between-null-and-blank/