feat(pagination): Pagination support for articles:

  - Create pagination for articles
[Finishes #164798214]

authors/apps/articles/pagination.py

@@ -0,0 +1,4 @@
+from rest_framework.pagination import PageNumberPagination
+
+class ArticlePageNumberPagination(PageNumberPagination):
+    page_size = 10

authors/apps/articles/tests/test_articles.py

@@ -17,13 +17,16 @@ def test_get_article_not_authenticated(self):
         user_token = self.create_user(test_data.test_user_data)
         resp =self.client.post('/api/articles/', article_data, HTTP_AUTHORIZATION=user_token, format='json')
         response = self.client.get('/api/articles/', format='json')
-        self.assertEqual(response.data[0]["title"], article_data.get("title"))
-        self.assertEqual(response.data[0]["description"], article_data.get("description"))
-        self.assertEqual(response.data[0]["body"], article_data.get("body"))
+        title = response.data.get('results')[0].get('title')
+        descr = response.data.get('results')[0].get('description')
+        body = response.data.get('results')[0].get('body')
+        self.assertEqual(title, article_data.get("title"))
+        self.assertEqual(descr, article_data.get("description"))
+        self.assertEqual(body, article_data.get("body"))
 
     def test_create_article(self):
         user_token = self.create_user(test_data.test_user_data)
-        resp =self.client.post('/api/articles/', article_data, HTTP_AUTHORIZATION=user_token, format='json')
+        resp = self.client.post('/api/articles/', article_data, HTTP_AUTHORIZATION=user_token, format='json')
         self.assertEqual(resp.data["article"]["title"], article_data.get("title"))
         self.assertEqual(resp.data["article"]["description"], article_data.get("description"))
         self.assertEqual(resp.data["article"]["body"], article_data.get("body"))
@@ -35,17 +38,22 @@ def test_get_article_authenticated(self):
         user_tkn = self.create_user(test_data.test_user_data)
         resp =self.client.post('/api/articles/', article_data, HTTP_AUTHORIZATION=user_tkn, format='json')
         response = self.client.get('/api/articles/', HTTP_AUTHORIZATION=user_tkn, format='json')
-        self.assertEqual(response.data[0]["title"], article_data.get("title"))
-        self.assertEqual(response.data[0]["description"], article_data.get("description"))
-        self.assertEqual(response.data[0]["body"], article_data.get("body"))
+        title = response.data.get('results')[0].get('title')
+        body = response.data.get('results')[0].get('body')
+        descr = response.data.get('results')[0].get('description')
+        self.assertEqual(title, article_data.get("title"))
+        self.assertEqual(descr, article_data.get("description"))
+        self.assertEqual(body, article_data.get("body"))
 
     def test_get_article_by_id(self):
         user1_token = self.create_user(test_user_data)
         self.client.post('/api/articles/', article_data, HTTP_AUTHORIZATION=user1_token, format='json')
         self.client.post('/api/articles/', article_data, HTTP_AUTHORIZATION=user1_token, format='json')
 
         all_articles = self.client.get('/api/articles/', HTTP_AUTHORIZATION=user1_token, format='json')
-        response =self.client.get(f'/api/articles/{all_articles.data[0]["id"]}', HTTP_AUTHORIZATION=user1_token, format='json')
+        id = all_articles.data.get('results')[0].get('id')
+
+        response =self.client.get(f'/api/articles/{id}', HTTP_AUTHORIZATION=user1_token, format='json')
 
         self.assertEqual(response.data["title"], article_data["title"])
         self.assertEqual(response.data["description"], article_data.get("description"))

authors/apps/articles/views.py

@@ -8,6 +8,7 @@
 from rest_framework.permissions import (IsAuthenticatedOrReadOnly,
                                         IsAuthenticated)
 from .serializers import ArticleSerializer 
+from .pagination import ArticlePageNumberPagination
 
 class ListCreateArticle(generics.ListCreateAPIView):
     """
@@ -18,6 +19,7 @@ class ListCreateArticle(generics.ListCreateAPIView):
 
     queryset = Article.objects.all()
     serializer_class = serializers.ArticleSerializer
+    pagination_class = ArticlePageNumberPagination
 
     def create(self,request):
         article=request.data

authors/settings.py

@@ -141,7 +141,10 @@
     'EXCEPTION_HANDLER': 'authors.apps.core.exceptions.core_exception_handler',
     'NON_FIELD_ERRORS_KEY': 'error',
 
-    #Register custom backend to rest_framework
+    # Enable LimitOffsetPagination
+    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
+
+    # Register custom backend to rest_framework
     'DEFAULT_AUTHENTICATION_CLASSES': (
         'authors.apps.authentication.backends.JWTAuthentication',
     ),