refactored filters for partner view

apps/partner/filters.py

@@ -0,0 +1,23 @@
+"""Partner app filters."""
+from django_filters import rest_framework as filters
+
+from partner.models import Partner
+
+
+class PartnerFilterSet(filters.FilterSet):
+    """Establishment filter set."""
+
+    establishment = filters.NumberFilter(
+        help_text='Allows to get partner list by establishment ID.')
+    type = filters.ChoiceFilter(
+        choices=Partner.MODEL_TYPES,
+        help_text=f'Allows to filter partner list by partner type. '
+                  f'Enum: {dict(Partner.MODEL_TYPES)}')
+
+    class Meta:
+        """Meta class."""
+        model = Partner
+        fields = (
+            'establishment',
+            'type',
+        )

apps/partner/views/back.py

@@ -1,22 +1,20 @@
-from django_filters.rest_framework import DjangoFilterBackend, filters
 from rest_framework import generics, permissions
 
+from partner import filters
 from partner.models import Partner
 from partner.serializers import back as serializers
 from utils.permissions import IsEstablishmentManager
 
 
 class PartnerLstView(generics.ListCreateAPIView):
-    """Partner list create view."""
+    """Partner list/create view.
+    Allows to get partners for current country, or create a new one.
+    """
     queryset = Partner.objects.all()
     serializer_class = serializers.BackPartnerSerializer
     pagination_class = None
     permission_classes = [permissions.IsAdminUser | IsEstablishmentManager]
-    filter_backends = (DjangoFilterBackend,)
-    filterset_fields = (
-        'establishment',
-        'type',
-    )
+    filter_class = filters.PartnerFilterSet
 
 
 class PartnerRUDView(generics.RetrieveUpdateDestroyAPIView):