unable to create autoincrementing primary key with flask-sqlalchemy

Question

I want my model\'s primary key to be an autoincrementing integer. Here is how my model looks like

class Region(db.Model):
    __tablename__ = \'regions\'
            


        

Answer 1

I had the same error, even after adding autoincrement=True.

The problem was I already had the migration created. So I downgraded to the previous migration, deleted the migration, created the migration again and upgraded.

Then the error was gone.

Hope it helps someone stuck on this.

Wrapping off: Add autoincrement=True, and ensure your migration is updated and applied.