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Expandable serializers for Django REST Framework

Project description

Django Rest Framework Expandable

Description

Expandable serializers for Django REST Framework. Allow for selective object expansion through query parameters or serializer class kwargs.

Installation

pip install django-rest-framework-expandable

Usage

# apps/users/api.serializers.py
# (User serializer)
class UserSerializer(ExpandableHyperlinkedModelSerializer):
  class Meta:
    model = User
    fields = ("username", "id", ...)

# apps/users/api/fields.py
# (User expandable serializer field)
class UserRelatedField(ExpandableHyperlinkedRelatedField):
  queryset = User.objects.all()
  lookup_field = "id"
  view_name = "api:user-detail"
  expand_settings = {
    "comparison_fields": ["id"],
    "serializers": [
      {
        "paths": ["example.user"],
        "serializer": "apps.users.api.serializers.UserSerializer",
        "skipped": [],
      }
    ]
  }

# apps/example/api/serializers.py
# Example serializer (using nested expandable serializer fields)
from apps.users.api.fields import UserRelatedField
from apps.another.api.fields import AnotherRelatedField

class ExampleSerializer(ExpandableHyperlinkedModelSerializer):
  another_related_field = AnotherRelatedField()
  user = UserRelatedField()
  ...

Returns...

GET http://localhost:8000/api/examples/?expand=example.user
{
  id: 1,
  another_related_field: "http://localhost:8000/api/another/1",
  user: {
    id: 1,
    username: "Alex",
    ...
  }
}

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