Target database is not up to date

Question

I\'d like to make a migration for a Flask app. I am using Alembic.

However, I receive the following error.

T         


        

Answer 1

This can be solved bby many ways :

1 To fix this error, delete the latest migration file ( a python file) then try to perform a migration afresh.

If issue still persists try these commands :

$ flask db stamp head  # To set the revision in the database to the head, without performing any migrations. You can change head to the required change you want.
$ flask db migrate     # To detect automatically all the changes.
$ flask db upgrade     # To apply all the changes.

Answer 2

Try to drop all tables before execute the db upgrade command.

Answer 3

I did too run into different heads and I wanted to change one of the fields from string to integer, so first run:

$ flask db stamp head # to make the current the same
$ flask db migrate
$ flask db upgrade

It's solved now!

Answer 4

This Worked For me

$ flask db stamp head
$ flask db migrate
$ flask db upgrade

Answer 5

$ flask db stamp head  # To set the revision in the database to the head, without performing any migrations. You can change head to the required change you want.
$ flask db migrate  # To detect automatically all the changes.
$ flask db upgrade  # To apply all the changes.

You can find more info at the documentation https://flask-migrate.readthedocs.io/en/latest/