GM-68: Реализовать метод возвращения списка избранного для пользователя

apps/establishment/serializers.py

@@ -125,22 +125,20 @@ class EstablishmentEmployeeSerializer(serializers.ModelSerializer):
         fields = ('id', 'name', 'position_translated', 'awards')
 
 
-class EstablishmentListSerializer(serializers.ModelSerializer):
+class EstablishmentBaseSerializer(serializers.ModelSerializer):
-    """Serializer for Establishment model."""
+    """Base serializer for Establishment model."""
-
     name_translated = serializers.CharField(allow_null=True)
     type = EstablishmentTypeSerializer(source='establishment_type')
     subtypes = EstablishmentSubTypeSerializer(many=True)
     address = AddressSerializer()
     tags = MetaDataContentSerializer(many=True)
     preview_image = serializers.SerializerMethodField()
-    in_favorites = serializers.BooleanField()
 
     class Meta:
         """Meta class."""
 
         model = models.Establishment
-        fields = (
+        fields = [
             'id',
             'name_translated',
             'price_level',
@@ -151,8 +149,7 @@ class EstablishmentListSerializer(serializers.ModelSerializer):
             'preview_image',
             'address',
             'tags',
-            'in_favorites',
+        ]
-        )
 
     def get_preview_image(self, obj):
         """Get preview image"""
@@ -160,6 +157,20 @@ class EstablishmentListSerializer(serializers.ModelSerializer):
                                       thumbnail_key='establishment_preview')
 
 
+class EstablishmentListSerializer(EstablishmentBaseSerializer):
+    """Serializer for Establishment model."""
+    # Annotated fields
+    in_favorites = serializers.BooleanField(allow_null=True)
+
+    class Meta:
+        """Meta class."""
+
+        model = models.Establishment
+        fields = EstablishmentBaseSerializer.Meta.fields + [
+            'in_favorites',
+        ]
+
+
 class EstablishmentDetailSerializer(EstablishmentListSerializer):
     """Serializer for Establishment model."""
     description_translated = serializers.CharField(allow_null=True)
@@ -184,7 +195,7 @@ class EstablishmentDetailSerializer(EstablishmentListSerializer):
         """Meta class."""
 
         model = models.Establishment
-        fields = EstablishmentListSerializer.Meta.fields + (
+        fields = EstablishmentListSerializer.Meta.fields + [
             'description_translated',
             'price_level',
             'image',
@@ -202,7 +213,7 @@ class EstablishmentDetailSerializer(EstablishmentListSerializer):
             'menu',
             'best_price_menu',
             'best_price_carte',
-        )
+        ]
 
     def get_review(self, obj):
         """Serializer method for getting last published review"""

apps/favorites/serializers.py

@@ -1 +1,17 @@
 """Serializers for app favorites."""
+from .models import Favorites
+from rest_framework import serializers
+from establishment.serializers import EstablishmentBaseSerializer
+
+
+class FavoritesEstablishmentListSerializer(serializers.ModelSerializer):
+    """Serializer for model Favorites"""
+    detail = EstablishmentBaseSerializer(source='content_object')
+
+    class Meta:
+        """Meta class."""
+        model = Favorites
+        fields = (
+            'id',
+            'detail',
+        )

apps/favorites/urls.py

@@ -0,0 +1,12 @@
+"""Favorites urlpaths."""
+from django.urls import path
+from . import views
+
+
+app_name = 'favorites'
+
+urlpatterns = [
+    path('establishments/', views.FavoritesEstablishmentListView.as_view(),
+         name='establishment-list'),
+    path('remove/<int:pk>/', views.FavoritesDestroyView.as_view(), name='delete-favorites'),
+]

apps/favorites/views.py

@@ -0,0 +1,25 @@
+"""Views for app favorites."""
+from rest_framework import generics
+from .serializers import FavoritesEstablishmentListSerializer
+from .models import Favorites
+
+
+class FavoritesBaseView(generics.GenericAPIView):
+    """Base view for Favorites."""
+    def get_queryset(self):
+        """Override get_queryset method."""
+        return Favorites.objects.by_user(self.request.user)
+
+
+class FavoritesEstablishmentListView(FavoritesBaseView, generics.ListAPIView):
+    """List views for favorites"""
+    serializer_class = FavoritesEstablishmentListSerializer
+
+    def get_queryset(self):
+        """Override get_queryset method"""
+        return super().get_queryset().by_content_type(app_label='establishment',
+                                                      model='establishment')
+
+
+class FavoritesDestroyView(FavoritesBaseView, generics.DestroyAPIView):
+    """Destroy view for favorites"""

project/urls/web.py

@@ -29,4 +29,5 @@ urlpatterns = [
     path('main/', include('main.urls')),
     path('translation/', include('translation.urls')),
     path('comments/', include('comment.urls.web')),
+    path('favorites/', include('favorites.urls')),
 ]