What are custom managers in Django ORM?

What are custom managers in Django ORM?

Custom managers in Django ORM are classes that manage database query operations for a model. They allow you to define methods that encapsulate common queries.

How do I create a custom manager?

To create a custom manager, define a class that inherits from models.Manager and add your custom methods. Then, attach it to your model using the objects attribute.

Can you give me an example of a custom manager?

Sure! Here's a simple example:

class PublishedManager(models.Manager):
    def published(self):
        return self.filter(status='published')

class Post(models.Model):
    title = models.CharField(max_length=100)
    status = models.CharField(max_length=10)
    objects = PublishedManager()

What are the benefits of using custom managers?

Custom managers help keep your code organized, promote reusability, and make your queries more readable.