gold eggs backend

core/apps/eggs/serializers/additional_cost.py

@@ -0,0 +1,54 @@
+from django.db.models import Sum
+from rest_framework import serializers
+
+from core.apps.eggs.models import AdditionalCost, History
+from core.apps.eggs.models.monitoring import Monitoring
+from core.http.serializers import UserSerializer
+
+
+class AdditionalCostSerializer(serializers.ModelSerializer):
+    user = UserSerializer(read_only=True)
+    total_price = serializers.SerializerMethodField()
+
+    class Meta:
+        model = AdditionalCost
+        fields = ["id", "user", "reason", "price", "created_at", "total_price"]
+        read_only_fields = ["created_at", "total_price"]
+        extra_kwargs = {
+            "user": {"required": False},
+        }
+
+    def create(self, validated_data):
+        additional_cost = AdditionalCost.objects.create(**validated_data)
+        user = self.context["request"].user
+        if user is not None:
+            additional_cost.user = user
+            additional_cost.save()
+            History.objects.create(
+                content_object=additional_cost,
+                action="additional_cost_created",
+                user_id=user,
+                created_who=f"{user.first_name} {user.last_name}",
+                created_by=f"{user.first_name} {user.last_name}",
+                reason=f"Qo'shimcha xarajat qo'shildi {additional_cost.price} so'm",
+                comment=additional_cost.reason,
+                avatar=user.avatar if user.avatar else None,
+            )
+            Monitoring.objects.create(
+                content_object=additional_cost,
+                action="additional_cost_created",
+                user_id=user,
+                created_who=f"{user.first_name} {user.last_name}",
+                created_by=f"{user.first_name} {user.last_name}",
+                reason=f"Qo'shimcha xarajat qo'shildi {additional_cost.price} so'm",
+                comment="Chiqim",
+                price=additional_cost.price,
+            )
+            return additional_cost
+        else:
+            raise serializers.ValidationError("User is not authenticated")
+
+    def get_total_price(self, obj):
+        return AdditionalCost.objects.aggregate(total_price=Sum("price"))[
+            "total_price"
+        ]