establishment carousel web and mobile api

apps/establishment/models.py

@@ -395,6 +395,7 @@ class Establishment(GalleryModelMixin, ProjectBaseMixin, URLImageMixin,
                                   verbose_name=_('Tag'))
     reviews = generic.GenericRelation(to='review.Review')
     comments = generic.GenericRelation(to='comment.Comment')
+    carousels = generic.GenericRelation(to='main.Carousel')
     favorites = generic.GenericRelation(to='favorites.Favorites')
     currency = models.ForeignKey(Currency, blank=True, null=True, default=None,
                                  on_delete=models.PROTECT,

apps/establishment/serializers/common.py

@@ -13,7 +13,7 @@ from review.serializers import ReviewShortSerializer
 from tag.serializers import TagBaseSerializer
 from timetable.serialziers import ScheduleRUDSerializer
 from utils import exceptions as utils_exceptions
-from utils.serializers import ImageBaseSerializer
+from utils.serializers import ImageBaseSerializer, CarouselCreateSerializer
 from utils.serializers import (ProjectModelSerializer, TranslatedField,
                                FavoritesCreateSerializer)
 
@@ -426,6 +426,27 @@ class EstablishmentFavoritesCreateSerializer(FavoritesCreateSerializer):
         return super().create(validated_data)
 
 
+class EstablishmentCarouselCreateSerializer(CarouselCreateSerializer):
+    """Serializer to carousel object w/ model News."""
+
+    def validate(self, attrs):
+        establishment = models.Establishment.objects.filter(slug=self.slug).first()
+        if not establishment:
+            raise serializers.ValidationError({'detail': _('Object not found.')})
+
+        if establishment.carousels.exists():
+            raise utils_exceptions.CarouselError()
+
+        attrs['establishment'] = establishment
+        return attrs
+
+    def create(self, validated_data, *args, **kwargs):
+        validated_data.update({
+            'content_object': validated_data.pop('establishment')
+        })
+        return super().create(validated_data)
+
+
 class CompanyBaseSerializer(serializers.ModelSerializer):
     """Company base serializer"""
     phone_list = serializers.SerializerMethodField(source='phones', read_only=True)

apps/establishment/urls/common.py

@@ -17,5 +17,7 @@ urlpatterns = [
     path('slug/<slug:slug>/comments/<int:comment_id>/', views.EstablishmentCommentRUDView.as_view(),
          name='rud-comment'),
     path('slug/<slug:slug>/favorites/', views.EstablishmentFavoritesCreateDestroyView.as_view(),
-         name='create-destroy-favorites')
+         name='create-destroy-favorites'),
+    path('slug/<slug:slug>/carousels/', views.EstablishmentCarouselCreateDestroyView.as_view(),
+         name='create-destroy-carousels')
 ]

apps/establishment/views/web.py

@@ -9,7 +9,7 @@ from comment.serializers import CommentRUDSerializer
 from establishment import filters, models, serializers
 from main import methods
 from utils.pagination import EstablishmentPortionPagination
-from utils.views import FavoritesCreateDestroyMixinView
+from utils.views import FavoritesCreateDestroyMixinView, CarouselCreateDestroyMixinView
 
 
 class EstablishmentMixinView:
@@ -34,7 +34,7 @@ class EstablishmentListView(EstablishmentMixinView, generics.ListAPIView):
     serializer_class = serializers.EstablishmentListRetrieveSerializer
 
     def get_queryset(self):
-        return super().get_queryset().with_schedule()\
+        return super().get_queryset().with_schedule() \
             .with_extended_address_related().with_currency_related()
 
 
@@ -105,9 +105,9 @@ class EstablishmentCommentListView(generics.ListAPIView):
 
         establishment = get_object_or_404(models.Establishment, slug=self.kwargs['slug'])
         return comment_models.Comment.objects.by_content_type(app_label='establishment',
-                                                              model='establishment')\
-                                             .by_object_id(object_id=establishment.pk)\
-                                             .order_by('-created')
+                                                              model='establishment') \
+            .by_object_id(object_id=establishment.pk) \
+            .order_by('-created')
 
 
 class EstablishmentCommentRUDView(generics.RetrieveUpdateDestroyAPIView):
@@ -139,6 +139,13 @@ class EstablishmentFavoritesCreateDestroyView(FavoritesCreateDestroyMixinView):
     serializer_class = serializers.EstablishmentFavoritesCreateSerializer
 
 
+class EstablishmentCarouselCreateDestroyView(CarouselCreateDestroyMixinView):
+    """View for create/destroy establishment from carousel."""
+
+    _model = models.Establishment
+    serializer_class = serializers.EstablishmentCarouselCreateSerializer
+
+
 class EstablishmentNearestRetrieveView(EstablishmentListView, generics.ListAPIView):
     """Resource for getting list of nearest establishments."""