Fix establishment retrieve view

apps/establishment/views.py

@@ -5,24 +5,25 @@ from utils.views import JWTGenericViewMixin
 from establishment import filters
 
 
-class EstablishmentListView(JWTGenericViewMixin, generics.ListAPIView):
+class EstablishmentMixin:
-    """Resource for getting a list of establishments."""
+    """Establishment mixin."""
 
     permission_classes = (permissions.AllowAny,)
     serializer_class = serializers.EstablishmentSerializer
-    filter_class = filters.EstablishmentFilter
 
     def get_queryset(self):
         """Overrided method 'get_queryset'."""
         return models.Establishment.objects.all().prefetch_actual_employees()
 
 
-class EstablishmentRetrieveView(JWTGenericViewMixin, generics.RetrieveAPIView):
+class EstablishmentListView(EstablishmentMixin, JWTGenericViewMixin, generics.ListAPIView):
-    """Resource for getting a establishment."""
+    """Resource for getting a list of establishments."""
 
-    permission_classes = (permissions.AllowAny,)
+    filter_class = filters.EstablishmentFilter
-    serializer_class = serializers.EstablishmentSerializer
+
-    queryset = models.Establishment.objects.all()
+
+class EstablishmentRetrieveView(EstablishmentMixin, JWTGenericViewMixin, generics.RetrieveAPIView):
+    """Resource for getting a establishment."""
 
 
 class EstablishmentTypeListView(JWTGenericViewMixin, generics.ListAPIView):