Errors when I try to migrate in Django2

Question

I have a problem (at least I think). I am new in all this, so I apologize If I ask something stupid. I have some site, which is working normally. When I try to make migrati

Answer 1

First, you must remove migration folders in each app

then, you can use migration commands

python manage.py makemigrations
python manage.py migrate

Answer 2

I had the same problem with postgresql-server-9.2.24-1.el7_5.x86_64 that is installing in Centos 7 by default. Installing Postgresql 11 solved the problem.

Answer 3

Whenever you are adding any new field and facing migrate error.

Kindly follow these steps:

• Delete all migration files(not the migration folder, keep the init.py file
• Truncate the _django_migrations_ table
• comment the new field which is to be added from the models.py. (Do make sure this step otherwise django will throw error when you would follow the below steps)
• run python manage.py makemigrations
• run python manage.py migrate --fake
• Uncomment the new field to be added
• run python manage.py makemigrations
• run python manage.py migrate

Generally these steps solve any kind of migration problem.

P.S. : When you face problem in only one app, I would recommend to delete entries of that particular app from the django_migrations table