What are the commands for managing Django ORM migrations?

What are the commands for managing Django ORM migrations?

In Django, you can manage ORM migrations using several commands. The most common ones are:

1. python manage.py makemigrations - Creates new migrations based on the changes you made to your models.
2. python manage.py migrate - Applies the migrations to your database.
3. python manage.py showmigrations - Lists all migrations and their applied status.
4. python manage.py sqlmigrate <app_name> <migration_name> - Shows the SQL statements for a specific migration.

Can you explain what makemigrations does?

Sure! The makemigrations command scans your models for changes and creates migration files that describe those changes. These files are then used to update the database schema.

What happens if I forget to run makemigrations?

If you forget to run makemigrations, any changes you made to your models won't be reflected in the database. This can lead to errors when you try to access or manipulate data that doesn't match the current schema.

How can I roll back a migration?

You can roll back a migration using the command python manage.py migrate <app_name> <migration_name>. This will revert the database to the state defined by the specified migration.