"DO_NOTHING" is not defined django

To fix the error "DO_NOTHING is not defined" in Django, you can follow these steps:

  1. Open the file where the error is occurring. This could be a models.py file or a migration file.
  2. Look for a field that has a ForeignKey or OneToOneField relationship defined.
  3. In the relationship definition, there should be an on_delete parameter specified. This parameter determines what should happen when the referenced object is deleted.
  4. If the on_delete parameter is not specified, or if it is set to a value that is not recognized, such as DO_NOTHING, you will encounter the "DO_NOTHING is not defined" error.
  5. To fix the error, you need to replace DO_NOTHING with a valid on_delete option. Django provides several options to choose from, such as CASCADE, PROTECT, SET_NULL, and SET_DEFAULT, among others.
  6. Choose the appropriate on_delete option based on your requirements. For example, if you want to delete the referencing object when the referenced object is deleted, you can use CASCADE.
  7. Replace DO_NOTHING with the chosen on_delete option in the relationship definition.

By following these steps, you should be able to resolve the "DO_NOTHING is not defined" error in Django.