From ad43e4a5f92df5ac1c1d919fea4f4987b5219227 Mon Sep 17 00:00:00 2001
From: dormantman <dormantman@ya.ru>
Date: Thu, 16 Jan 2020 15:47:01 +0300
Subject: [PATCH] Added new route preview/slug/<slug>/

---
 apps/news/serializers.py | 20 ++++++++++++++++++++
 apps/news/urls/common.py |  1 +
 apps/news/views.py       | 12 ++++++++++++
 3 files changed, 33 insertions(+)

diff --git a/apps/news/serializers.py b/apps/news/serializers.py
index c0df73a4..d9050620 100644
--- a/apps/news/serializers.py
+++ b/apps/news/serializers.py
@@ -176,6 +176,26 @@ class NewsDetailWebSerializer(NewsDetailSerializer):
         return NewsSimilarListSerializer(obj.should_read(self.context['request'].user), many=True, read_only=True).data
 
 
+class NewsPreviewWebSerializer(NewsDetailSerializer):
+    """News preview serializer for web users.."""
+
+    same_theme = SerializerMethodField()
+    agenda = AgendaSerializer()
+    banner = NewsBannerSerializer()
+
+    class Meta(NewsDetailSerializer.Meta):
+        """Meta class."""
+
+        fields = NewsDetailSerializer.Meta.fields + (
+            'same_theme',
+            'agenda',
+            'banner',
+        )
+
+    def get_same_theme(self, obj):
+        return NewsSimilarListSerializer(obj.same_theme(self.context['request'].user), many=True, read_only=True).data
+
+
 class NewsBackOfficeBaseSerializer(NewsBaseSerializer):
     """News back office base serializer."""
     is_published = serializers.BooleanField(source='is_publish', read_only=True)
diff --git a/apps/news/urls/common.py b/apps/news/urls/common.py
index f5c809de..4668bbfc 100644
--- a/apps/news/urls/common.py
+++ b/apps/news/urls/common.py
@@ -7,4 +7,5 @@ common_urlpatterns = [
     path('slug/<slug:slug>/', views.NewsDetailView.as_view(), name='rud'),
     path('slug/<slug:slug>/favorites/', views.NewsFavoritesCreateDestroyView.as_view(),
          name='create-destroy-favorites'),
+    path('preview/slug/<slug:slug>/', views.NewsPreviewView.as_view(), name='preview'),
 ]
diff --git a/apps/news/views.py b/apps/news/views.py
index 80f70b79..178c359f 100644
--- a/apps/news/views.py
+++ b/apps/news/views.py
@@ -70,6 +70,18 @@ class NewsDetailView(NewsMixinView, generics.RetrieveAPIView):
         return qs
 
 
+class NewsPreviewView(NewsMixinView, generics.RetrieveAPIView):
+    """News preview view."""
+
+    lookup_field = None
+    serializer_class = serializers.NewsPreviewWebSerializer
+
+    def get_queryset(self):
+        """Override get_queryset method."""
+        qs = models.News.objects.all().annotate_in_favorites(self.request.user)
+        return qs
+
+
 class NewsTypeListView(generics.ListAPIView):
     """NewsType list view."""