创建订单商品件数默认留空

src/views/ecw/order/edit.vue

@@ -275,7 +275,7 @@
               {{ $t('件数') }} <span class="red">*</span>
             </template>
             <template slot-scope="{row}">
-              <el-input-number :min="1" :controls="false" style="width: 65px" v-model.number="row.num"
+              <el-input-number :min="1" :step="1"  :controls="false" style="width: 65px" v-model="row.num"
                                :disabled="!canAddProduct || !productEditable"/>
             </template>
           </el-table-column>
@@ -1624,7 +1624,7 @@ export default {
         worth: '',
         volume: '',
         weight: '',
-        num: 1
+        num: undefined
       })
     },
     // 更新路线并打印来源