feat: added plate order clone

api_v2/views/stateflow.py

@@ -0,0 +1,62 @@
+from rest_framework import serializers, status, permissions
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from stateflow import models as stateflow_models
+from stateflow import services as stateflow_services
+
+
+class BusinessObjectCloneRequestSerializer(serializers.Serializer):
+    business_object_id = serializers.IntegerField(min_value=1)
+    # 调用方必须显式传入 content_type 与 object_id：
+    # - content_type：仅用于校验与源对象一致（不做额外校验）
+    # - object_id：克隆后的新业务对象 ID（必须与源对象不同）
+    content_type = serializers.IntegerField(min_value=1, allow_null=True)
+    object_id = serializers.IntegerField(min_value=1, allow_null=True)
+
+
+class BusinessObjectCloneView(APIView):
+    """
+    克隆 BusinessObject（含所有状态流转记录与工艺参数记录）
+
+    POST /api/v2/stateflow/business-objects/clone/
+
+    请求体:
+    {
+      "business_object_id": 123,
+      "content_type": 9,
+      "object_id": 456
+    }
+
+    返回:
+    {
+      "business_object_id": 456
+    }
+    """
+
+    permission_classes = [permissions.IsAuthenticated]
+
+    def post(self, request):
+        srz = BusinessObjectCloneRequestSerializer(data=request.data)
+        srz.is_valid(raise_exception=True)
+
+        bo_id = srz.validated_data['business_object_id']
+        expected_content_type_id = srz.validated_data.get('content_type')
+        new_object_id = srz.validated_data.get('object_id')
+        try:
+            bo = stateflow_models.BusinessObject.objects.get(id=bo_id)
+        except stateflow_models.BusinessObject.DoesNotExist:
+            return Response({'detail': 'business_object 不存在'}, status=status.HTTP_404_NOT_FOUND)
+
+        try:
+            cloned = stateflow_services.clone_business_object(
+                bo,
+                new_object_id=new_object_id,
+                expected_content_type_id=expected_content_type_id,
+            )
+        except ValueError as e:
+            return Response({'detail': str(e)}, status=status.HTTP_400_BAD_REQUEST)
+
+        return Response({'business_object_id': cloned.id})
+
+