Starting from scratch-the problem of the Django database created before the site was built

A little bit familiar with Django inside the data operation, found that met a lot of problems.

Django's manipulation of the data is a code-style operation.

It's normal to start creating parameters for a table in models, like Username,password, and then use Makemigrations, migrations to create the fields. The fields I created also appear in the database. But when I add a field in the table to find that it is not updated in the database, this is very annoying ah ....

Baidu for a long time found that my project does not have migrations this package, this package is not Django itself created (I guess), but we need to create manually , this package is recorded in our data on the creation of various fields and delete. So I created this package and deleted all the tables I created in the database and recreated them (makemigrations, migrations). At the time of observation, the dataset field was created, and there were some records of database operations in the migrations I built. At this point, I re-add the deletion field in the models, and then create, this time the database can create or delete my models changes. That's probably it.

Starting from scratch-the problem of the Django database created before the site was built