django.db.utils.IntegrityError: column “venue_city” contains null values

Question

I have read a lot of other posts here on stackoverflow and google but I could not find a solution.

It all started when I changed the model from a CharField to a For

Answer 1

Looks like you added null=True after created migration file. Because venue_city is not a nullable field in your migration file

Follow these steps.

1) Drop venue_city & venue_country from your local table
3) Delete all the migration files you created for these `CharField to a ForeignKey` change
4) execute `python manage.py makemigrations`
5) execute 'python manage.py migrate'

It should work