重货没值就传空

src/views/ecw/customer/edit.vue

@@ -800,8 +800,8 @@ export default {
           }
 
             // 重货标准和泡货标准，未打开就不传，提交前清空一下
-            if(!this.showZhong) this.form.weightUnit = ''
-            if(!this.showPao) this.form.lightUnit = ''
+            if(!this.showZhong) this.form.weightUnit = null
+            if(!this.showPao) this.form.lightUnit = null
           const form = {...this.form, type: this.form.type?.join(','), transportType: (this.form.transportType || [])?.join(','), taxRate: Number(this.form.taxRate)}
 
           // 检查路线是否启用了但是没选择目的仓