JSONField in serializers - Django REST Framework

JSONField in serializers - Django REST Framework

In Django REST Framework (DRF), if you're working with a model that has a JSONField, you can use the default serializers without much configuration, as DRF supports it out of the box.

Let's go through how to use a JSONField in DRF serializers:

  • Model with JSONField:

Assuming you have a Django model that uses JSONField:

from django.db import models class SampleModel(models.Model): data = models.JSONField()
  • Serializer for the model:

You can create a serializer for the above model using DRF's serializers.ModelSerializer.

from rest_framework import serializers class SampleModelSerializer(serializers.ModelSerializer): class Meta: model = SampleModel fields = '__all__'

Here, DRF will handle the JSONField automatically, and it will validate that the input is a valid JSON format.

  • Validation:

If you want to add custom validation or manipulation to the JSON data, you can do so by adding methods to the serializer:

class SampleModelSerializer(serializers.ModelSerializer): class Meta: model = SampleModel fields = '__all__' def validate_data(self, value): # Add custom validation for the 'data' field if 'some_key' not in value: raise serializers.ValidationError("The 'some_key' field is required in the JSON data.") return value
  • Using the serializer:

You can now use the serializer in your views or viewsets to handle the serialization and deserialization of the JSONField:

from rest_framework import generics class SampleModelListCreateView(generics.ListCreateAPIView): queryset = SampleModel.objects.all() serializer_class = SampleModelSerializer

In summary, Django REST Framework provides out-of-the-box support for JSONField in serializers. Still, you have the flexibility to add custom validation or manipulation when needed.

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