优化运营成本表

Model/models.py

@@ -4248,6 +4248,7 @@ class OperatingCosts(models.Model):
     storage_cost = models.CharField(verbose_name='云存成本', default='0', max_length=16)
     api_cost = models.CharField(verbose_name='调用api成本', default='0', max_length=16)
     fee = models.CharField(verbose_name='订单手续费', default='0', max_length=16)
+    flow_cost = models.CharField(verbose_name='流量成本', default='0', max_length=16)
 
     def __str__(self):
         return self.id