Django: Web Development with Python

Migrations

Migrations help you to confidently make changes to your models. Introduced in Django 1.7, migrations are an essential and easy-to-use parts of a development workflow.

The new workflow is essentially as follows:

1. The first time you define your model classes, you will need to run:

   python manage.py makemigrations <app_label>
   

2. This will create migration scripts in app/migrations folder.
3. Run the following command in the same (development) environment:

   python manage.py migrate <app_label>
   

   This will apply the model changes to the database. Sometimes, questions are asked to handle the default values, renaming, and so on.

4. Propagate the migration scripts to other environments. Typically, your version control tool, for example Git, will take care of ...