fix: wpr复用number的bug2

apps/wpmw/models.py

@@ -38,30 +38,34 @@ class Wpr(BaseModel):
                 wpr.delete()
                 return
         elif number:
-            try:
-                ins_x = cls.objects.get(number=number)
+            ins_x = cls.objects.filter(number=number).order_by("-version").first()
+            if ins_x:
                 if ins_x.wm is None and ins_x.mb is None: 
                     if ins_x.version > 1: # 说明被复用了
                         if wpr_from is None:
                             wpr_from = ins_x
+                        # 创建新的wpr
+                        ins = cls(number=number)
+                        ins.version = -1
+                        ins.oinfo = {}
                     else:
                         raise ParseError(f"该物料编号{number}-已存在不可使用")
                 else:
                     raise ParseError(f"该物料编号{number}-已存在不可使用")
-            except cls.DoesNotExist:
+            else:
                 ins = cls(number=number)
                 ins.version = -1
                 ins.oinfo = {}
                 if batch_from: # 尝试从批号追踪来源
-                    try:
-                        ins_from = cls.objects.get(number=number)
+                    ins_from = cls.objects.filter(number=batch_from).order_by("-version").first()
+                    if ins_from:
                         if ins_from.wm is None and ins_from.mb is None: 
                             if ins_from.version > 1: # 说明被复用了
                                 wpr_from = ins_from
                             else:
                                 raise ParseError(f"该物料编号{number}-已存在不可使用")
-                    except cls.DoesNotExist:
-                        pass
+                    elif wpr_from is None:
+                        raise ParseError(f"该物料编号{number}-尝试从批号追踪来源失败")
 
         if old_mb and ins.mb != old_mb:
             raise ParseError(f"请检查-{ins.number}-所属仓库批次")