What is the difference between Serializer and ModelSerializer in Django?

What is the difference between Serializer and ModelSerializer in Django?

In Django REST Framework, a Serializer is a class that converts complex data types, like querysets and model instances, into native Python data types. A ModelSerializer, on the other hand, is a subclass of Serializer that automatically creates fields based on the model's fields.

Can you give me an example of when to use each?

Sure! Use a Serializer when you need to handle custom data structures or when you're not directly working with a model. Use ModelSerializer when you want to quickly create a serializer for a model, as it saves you from manually defining fields.

Are there any limitations to using ModelSerializer?

Yes, while ModelSerializer is convenient, it may not provide the flexibility needed for complex validation or custom fields. In such cases, a regular Serializer might be more appropriate.

How do I implement a custom field in a ModelSerializer?

You can define a custom field in a ModelSerializer by adding a new field in the class definition and overriding the create or update methods if necessary.