carousel api for news

apps/news/serializers.py

@@ -11,7 +11,7 @@ from news import models
 from tag.serializers import TagBaseSerializer
 from utils import exceptions as utils_exceptions
 from utils.serializers import (TranslatedField, ProjectModelSerializer,
-                               FavoritesCreateSerializer, ImageBaseSerializer)
+                               FavoritesCreateSerializer, ImageBaseSerializer, CarouselCreateSerializer)
 
 
 class AgendaSerializer(ProjectModelSerializer):
@@ -269,3 +269,24 @@ class NewsFavoritesCreateSerializer(FavoritesCreateSerializer):
             'content_object': validated_data.pop('news')
         })
         return super().create(validated_data)
+
+
+class NewsCarouselCreateSerializer(CarouselCreateSerializer):
+    """Serializer to carousel object w/ model News."""
+
+    def validate(self, attrs):
+        news = models.News.objects.filter(slug=self.slug).first()
+        if not news:
+            raise serializers.ValidationError({'detail': _('Object not found.')})
+
+        if news.carousels.exists():
+            raise utils_exceptions.CarouselError()
+
+        attrs['news'] = news
+        return attrs
+
+    def create(self, validated_data, *args, **kwargs):
+        validated_data.update({
+            'content_object': validated_data.pop('news')
+        })
+        return super().create(validated_data)

apps/news/urls/common.py

@@ -5,5 +5,8 @@ common_urlpatterns = [
     path('', views.NewsListView.as_view(), name='list'),
     path('types/', views.NewsTypeListView.as_view(), name='type'),
     path('slug/<slug:slug>/', views.NewsDetailView.as_view(), name='rud'),
-    path('slug/<slug:slug>/favorites/', views.NewsFavoritesCreateDestroyView.as_view(), name='create-destroy-favorites')
+    path('slug/<slug:slug>/favorites/', views.NewsFavoritesCreateDestroyView.as_view(),
+         name='create-destroy-favorites'),
+    path('slug/<slug:slug>/carousels/', views.NewsCarouselCreateDestroyView.as_view(),
+         name='create-destroy-carousels'),
 ]

apps/news/views.py

@@ -6,7 +6,7 @@ from rest_framework import generics, permissions
 from news import filters, models, serializers
 from rating.tasks import add_rating
 from utils.permissions import IsCountryAdmin, IsContentPageManager
-from utils.views import CreateDestroyGalleryViewMixin, FavoritesCreateDestroyMixinView
+from utils.views import CreateDestroyGalleryViewMixin, FavoritesCreateDestroyMixinView, CarouselCreateDestroyMixinView
 from utils.serializers import ImageBaseSerializer
 
 
@@ -155,3 +155,10 @@ class NewsFavoritesCreateDestroyView(FavoritesCreateDestroyMixinView):
 
     _model = models.News
     serializer_class = serializers.NewsFavoritesCreateSerializer
+
+
+class NewsCarouselCreateDestroyView(CarouselCreateDestroyMixinView):
+    """View for create/destroy news from carousel."""
+
+    _model = models.News
+    serializer_class = serializers.NewsCarouselCreateSerializer

apps/utils/exceptions.py

@@ -135,6 +135,14 @@ class FavoritesError(exceptions.APIException):
     default_detail = _('Item is already in favorites.')
 
 
+class CarouselError(exceptions.APIException):
+    """
+    The exception should be thrown when the object is already in carousels.
+    """
+    status_code = status.HTTP_400_BAD_REQUEST
+    default_detail = _('Item is already in carousels.')
+
+
 class PasswordResetRequestExistedError(exceptions.APIException):
     """
     The exception should be thrown when password reset request

apps/utils/serializers.py

@@ -2,10 +2,11 @@
 import pytz
 from django.core import exceptions
 from rest_framework import serializers
-from utils import models
-from translation.models import Language
+
 from favorites.models import Favorites
-from gallery.models import Image
+from main.models import Carousel
+from translation.models import Language
+from utils import models
 
 
 class EmptySerializer(serializers.Serializer):
@@ -80,7 +81,6 @@ class FavoritesCreateSerializer(serializers.ModelSerializer):
     """Serializer to favorite object."""
 
     class Meta:
-        """Serializer for model Comment."""
         model = Favorites
         fields = [
             'id',
@@ -101,6 +101,24 @@ class FavoritesCreateSerializer(serializers.ModelSerializer):
         return self.request.parser_context.get('kwargs').get('slug')
 
 
+class CarouselCreateSerializer(serializers.ModelSerializer):
+    """Carousel to favorite object."""
+
+    class Meta:
+        model = Carousel
+        fields = [
+            'id',
+        ]
+
+    @property
+    def request(self):
+        return self.context.get('request')
+
+    @property
+    def slug(self):
+        return self.request.parser_context.get('kwargs').get('slug')
+
+
 class RecursiveFieldSerializer(serializers.Serializer):
     def to_representation(self, value):
         serializer = self.parent.parent.__class__(value, context=self.context)

apps/utils/views.py

@@ -170,9 +170,10 @@ class CarouselCreateDestroyMixinView(BaseCreateDestroyMixinView):
         Returns the object the view is displaying.
         """
         obj = self.get_base_object()
-        carousels = get_object_or_404(obj.carousels.filter(user=self.request.user))
+        carousels = get_object_or_404(obj.carousels.all())
         # May raise a permission denied
-        self.check_object_permissions(self.request, carousels)
+        # TODO: возможно нужны пермишены
+        # self.check_object_permissions(self.request, carousels)
         return carousels