Added posts feed

solution/pulse/api/posts/views.py

@@ -1,12 +1,14 @@
-from rest_framework import status
+from rest_framework import serializers, status
 from rest_framework.exceptions import NotFound, ValidationError
+from rest_framework.generics import ListAPIView
 from rest_framework.permissions import IsAuthenticated
 from rest_framework.response import Response
 from rest_framework.views import APIView
 
 from api.posts.models import Post
-from api.posts.permissions import CanAccessPost
+from api.posts.permissions import CanAccessFeed, CanAccessPost
 from api.posts.serializers import PostSerializer
+from api.users.models import Profile
 
 
 class CreatePostApiView(APIView):
@@ -33,3 +35,50 @@ class PostDetailApiView(APIView):
             raise NotFound(
                 {"detail": "Post not found."},
             ) from None
+
+
+class MyFeedListApiView(ListAPIView):
+    permission_classes = [IsAuthenticated]
+    serializer_class = PostSerializer
+
+    def get_queryset(self):
+        class QueryParamsSerializer(serializers.Serializer):
+            limit = serializers.IntegerField(default=5)
+            offset = serializers.IntegerField(default=0)
+
+        serializer = QueryParamsSerializer(data=self.request.query_params)
+        serializer.is_valid(raise_exception=True)
+
+        limit = serializer.validated_data.get("limit")
+        offset = serializer.validated_data.get("offset")
+
+        return self.request.user.posts.all()[offset: offset + limit]
+
+
+class UserFeedListApiView(ListAPIView):
+    permission_classes = [IsAuthenticated, CanAccessFeed]
+    serializer_class = PostSerializer
+
+    def get_queryset(self):
+        class QueryParamsSerializer(serializers.Serializer):
+            limit = serializers.IntegerField(default=5)
+            offset = serializers.IntegerField(default=0)
+
+        login = self.kwargs.get("login")
+
+        try:
+            user = Profile.objects.get(login=login)
+        except Profile.DoesNotExist:
+            raise NotFound(
+                {"detail": "Profile not found."},
+            ) from None
+
+        self.check_object_permissions(self.request, user)
+
+        serializer = QueryParamsSerializer(data=self.request.query_params)
+        serializer.is_valid(raise_exception=True)
+
+        limit = serializer.validated_data.get("limit")
+        offset = serializer.validated_data.get("offset")
+
+        return user.posts.all()[offset: offset + limit]