Accept Merge Request #1640: (feature/part_number -> develop)

Merge Request: 时间获取修改

Created By: @廖丹龙
Reviewed By: @胡尧
Approved By: @胡尧 
Accepted By: @廖丹龙
URL: https://jikimo-hn.coding.net/p/jikimo_sfs/d/jikimo_sf/git/merge/1640?initial=true

sf_sale/models/sale_order.py

@@ -417,7 +417,7 @@ class RePurchaseOrder(models.Model):
         last_overdue_order = None
         last_warning_order = None
         for item in purchase_order:
-            current_time = datetime.now()
+            current_time = datetime.datetime.now()
             if item.date_planned <= current_time:  # 已逾期
                 item.delivery_warning = 'overdue'
                 last_overdue_order = item