add orders app and add new model on products

core/apps/orders/serializers/order.py

@@ -0,0 +1,75 @@
+from django.db import transaction
+
+from rest_framework import serializers
+
+from core.apps.orders.models import Order, OrderApplication
+from core.apps.products.models import Product, Unity
+from core.apps.wherehouse.models import WhereHouse
+from core.apps.projects.models import Project, ProjectDepartment
+
+
+class OrderCreateSerializer(serializers.Serializer):
+    product_id = serializers.UUIDField()
+    unity_id = serializers.UUIDField()
+    quantity = serializers.IntegerField()
+    wherehouse_id = serializers.UUIDField()
+    project_id = serializers.UUIDField()
+    project_department_id = serializers.UUIDField(required=False)
+    date = serializers.DateField()
+
+    def validate(self, data):
+        try:
+            product = Product.objects.get(id=data['product_id'])
+            unity = Unity.objects.get(id=data['unity_id'])
+            wherehouse = WhereHouse.objects.get(id=data['wherehouse_id'])
+            project = Project.objects.get(id=data['project_id'])
+            if data.get('project_department_id'):
+                project_department = ProjectDepartment.objects.get(
+                    id=data['project_department_id']
+                )
+        except Product.DoesNotExist:
+            raise serializers.ValidationError("Product not found")
+        except Unity.DoesNotExist:
+            raise serializers.ValidationError("Unity not found")
+        except WhereHouse.DoesNotExist:
+            raise serializers.ValidationError("Where House not found")
+        except Project.DoesNotExist:
+            raise serializers.ValidationError("Project not found")
+        try:
+            if data.get('project_department_id'):
+                data['project_department'] = ProjectDepartment.objects.get(id=data['project_department_id'])
+        except ProjectDepartment.DoesNotExist:
+            raise serializers.ValidationError("Project Department not found")
+        
+        data['product'] = product
+        data['unity'] = unity
+        data['wherehouse'] = wherehouse
+        data['project'] = project
+        return data
+    
+
+class OrderApplicationCreateSerializer(serializers.Serializer):
+    orders = serializers.ListSerializer(child=OrderCreateSerializer())
+
+    def create(self, validated_data):
+        employee = self.context.get('user')
+        orders_data = validated_data.pop('orders')
+        application = OrderApplication.objects.create(
+            employee=employee, status="NEW"
+        )
+
+        order_objs = []
+        for order_data in orders_data:
+            order_objs.append(Order(
+                product=order_data['product'],
+                unity=order_data['unity'],
+                quantity=order_data['quantity'],
+                wherehouse=order_data['wherehouse'],
+                project=order_data['project'],
+                project_department=order_data.get('project_department'),
+                date=order_data['date']
+            ))
+
+        created_orders = Order.objects.bulk_create(order_objs)
+        application.orders.add(*created_orders)
+        return application