add rancher statistics to inventory entries list - fix bug of login for empty string device identity

apps/warehouse/pos/api/v1/api.py

@@ -1,5 +1,9 @@
 from apps.warehouse.pos.api.v1 import serializers as warehouse_serializers
-from apps.warehouse.services.services import can_buy_from_inventory
+from apps.warehouse.services.services import (
+    can_buy_from_inventory,
+    rancher_quota_weight,
+    get_rancher_statistics
+)
 from apps.pos_device.mixins.pos_device_mixin import POSDeviceMixin
 from apps.core.mixins.search_mixin import DynamicSearchMixin
 from apps.warehouse import models as warehouse_models
@@ -64,7 +68,7 @@ class InventoryEntryViewSet(viewsets.ModelViewSet, DynamicSearchMixin, POSDevice
         # paginate & response
         page = self.paginate_queryset(available_entries)
         if page is not None:
-            serializer = self.get_serializer(page, many=True)
+            serializer = self.get_serializer(page, many=True, context={'rancher': rancher})
             return self.get_paginated_response(serializer.data)
 
 

apps/warehouse/pos/api/v1/serializers.py

@@ -1,3 +1,4 @@
+from apps.herd.services.services import get_rancher_statistics, rancher_quota_weight
 from apps.pos_device.pos.api.v1.serializers.device import DeviceSerializer
 from apps.herd.pos.api.v1.serializers import RancherSerializer
 from apps.warehouse.exceptions import (
@@ -47,6 +48,14 @@ class InventoryEntrySerializer(serializers.ModelSerializer):
                 'id': instance.distribution.quota.product.id,
             }
 
+        # rancher herd & live stock statistics
+        representation['rancher_statistics'] = get_rancher_statistics(self.context['rancher'])
+
+        # rancher live stock statistics by inventory entry
+        representation['rancher_quota_weight_statistics'] = rancher_quota_weight(
+            self.context['rancher'], instance
+        )
+
         return representation