support nested structures

Author: Boris Pleshakov

example/serializers.py

@@ -257,6 +257,23 @@ def get_first_entry(self, obj):
         return obj.entries.first()
 
 
+class CommentWithNestedFieldsSerializer(serializers.ModelSerializer):
+    entry = EntryDRFSerializers()
+
+    class Meta:
+        model = Comment
+        exclude = ('created_at', 'modified_at', 'author')
+        # fields = ('entry', 'body', 'author',)
+
+
+class AuthorWithNestedFieldsSerializer(serializers.ModelSerializer):
+    comments = CommentWithNestedFieldsSerializer(many=True)
+
+    class Meta:
+        model = Author
+        fields = ('name', 'email', 'comments')
+
+
 class WriterSerializer(serializers.ModelSerializer):
     included_serializers = {
         'bio': AuthorBioSerializer

example/tests/test_rendering_strategies.py

@@ -0,0 +1,80 @@
+from __future__ import absolute_import
+
+import json
+
+from django.utils import timezone
+from rest_framework.reverse import reverse
+
+from . import TestBase
+from example.models import Author, Blog, Comment, Entry
+from django.test import override_settings
+
+
+class TestResourceRelatedField(TestBase):
+    list_url = reverse('authors-nested-list')
+
+    def setUp(self):
+        super(TestResourceRelatedField, self).setUp()
+        self.blog = Blog.objects.create(name='Some Blog', tagline="It's a blog")
+        self.entry = Entry.objects.create(
+            blog=self.blog,
+            headline='headline',
+            body_text='body_text',
+            pub_date=timezone.now(),
+            mod_date=timezone.now(),
+            n_comments=0,
+            n_pingbacks=0,
+            rating=3
+        )
+        for i in range(1, 6):
+            name = 'some_author{}'.format(i)
+            self.entry.authors.add(
+                Author.objects.create(name=name, email='{}@example.org'.format(name))
+            )
+
+        self.comment = Comment.objects.create(
+            entry=self.entry,
+            body='testing one two three',
+            author=Author.objects.first()
+        )
+
+    def test_attribute_rendering_strategy(self):
+        with override_settings(JSON_API_NESTED_SERIALIZERS_RENDERING_STRATEGY='ATTRIBUTE'):
+            response = self.client.get(self.list_url)
+
+        expected = {
+            "links": {
+                "first": "http://testserver/authors-nested?page%5Bnumber%5D=1",
+                "last": "http://testserver/authors-nested?page%5Bnumber%5D=5",
+                "next": "http://testserver/authors-nested?page%5Bnumber%5D=2",
+                "prev": None
+            },
+            "data": [
+                {
+                    "type": "authors",
+                    "id": "1",
+                    "attributes": {
+                        "name": "some_author1",
+                        "email": "[email protected]",
+                        "comments": [
+                            {
+                                "id": 1,
+                                "entry": {
+                                    "tags": [],
+                                    "url": "http://testserver/drf-blogs/1"
+                                },
+                                "body": "testing one two three"
+                            }
+                        ]
+                    }
+                }
+            ],
+            "meta": {
+                "pagination": {
+                    "page": 1,
+                    "pages": 5,
+                    "count": 5
+                }
+            }
+        }
+        assert expected == response.json()

example/urls_test.py

@@ -18,7 +18,8 @@
     NoFiltersetEntryViewSet,
     NonPaginatedEntryViewSet,
     ProjectTypeViewset,
-    ProjectViewset
+    ProjectViewset,
+    AuthorWithNestedFieldsViewSet
 )
 
 router = routers.DefaultRouter(trailing_slash=False)
@@ -32,6 +33,7 @@
 router.register(r'filterset-entries', FiltersetEntryViewSet, 'filterset-entry')
 router.register(r'nofilterset-entries', NoFiltersetEntryViewSet, 'nofilterset-entry')
 router.register(r'authors', AuthorViewSet)
+router.register(r'authors-nested', AuthorWithNestedFieldsViewSet, 'authors-nested')
 router.register(r'comments', CommentViewSet)
 router.register(r'companies', CompanyViewset)
 router.register(r'projects', ProjectViewset)

example/views.py

@@ -23,8 +23,8 @@
     EntryDRFSerializers,
     EntrySerializer,
     ProjectSerializer,
-    ProjectTypeSerializer
-)
+    ProjectTypeSerializer,
+    AuthorWithNestedFieldsSerializer)
 
 HTTP_422_UNPROCESSABLE_ENTITY = 422
 
@@ -175,6 +175,11 @@ class AuthorViewSet(ModelViewSet):
     serializer_class = AuthorSerializer
 
 
+class AuthorWithNestedFieldsViewSet(ModelViewSet):
+    queryset = Author.objects.all()
+    serializer_class = AuthorWithNestedFieldsSerializer
+
+
 class CommentViewSet(ModelViewSet):
     queryset = Comment.objects.all()
     serializer_class = CommentSerializer