Python 3, Django 1.8.5, Postgres
I have a model Sites that has been working fine. I recently tried to add a field, airport_code, and migrate the data.>
Sites
In my case it happens because of my custom AdminSite has MyModel.objects.filter on application start, i have disabled it for makemigrations and migrate database.
AdminSite
MyModel.objects.filter
start
makemigrations
migrate