How do I handle one-to-many migrations in Django?

How do I handle one-to-many migrations in Django?

In Django, you can handle one-to-many relationships using ForeignKey fields. When you create a migration, ensure that the ForeignKey is set up correctly.

Can you show me an example of a model with a one-to-many relationship?

Sure! For example, if you have a Book model and an Author model, you can define it like this:

class Author(models.Model):
    name = models.CharField(max_length=100)

class Book(models.Model):
    title = models.CharField(max_length=200)
    author = models.ForeignKey(Author, on_delete=models.CASCADE)

This sets up a one-to-many relationship where one author can have many books.

What command do I use to create the migration after defining the models?

You can use the command python manage.py makemigrations to create the migration files after defining your models.

How do I apply the migrations to the database?

To apply the migrations, use the command python manage.py migrate. This will update your database schema.