vue使用Element组件时v-for循环里的表单项验证方法

<template> <div class="content-body">  <el-form ref="form" :model="form" :rules="rules" label-width="120px">   <el-row :gutter="10">    <el-col :span="12" :offset="0">     <el-form-item label="套餐名称：" prop="activityName" id="activityName">      <el-input v-model="form.activityName"></el-input>     </el-form-item>    </el-col>   </el-row>   <el-row :gutter="10">    <el-col :span="12">     <el-form-item label="状态：">      <el-radio v-model="form.status" label="1">上线</el-radio>      <el-radio v-model="form.status" label="0">下线</el-radio>     </el-form-item>    </el-col>   </el-row>   <el-row :gutter="10">    <el-col :span="2" style="width:120px;">     <div class="sub-title">梯度设置：</div>    </el-col>    <el-col :span="20">      <el-row :gutter="10" v-for="(item,index) in form.productGroup" :key="index">       <el-col :span="6">        <el-form-item label="商品数量:">         <el-input v-model="item.num" type="number" size="small" style="width:80px;"></el-input>        </el-form-item>       </el-col>       <el-col :span="6">        <el-form-item label="优惠价格:">          <el-input v-model="item.price" type="number" size="small" style="width:80px;"></el-input>        </el-form-item>       </el-col>       <el-col :span="4">        <i class="el-icon-remove-outline" @click="deleteLadder(index)"></i>          <i class="el-icon-circle-plus-outline" @click="addLadder" v-if="index==0"></i>       </el-col>      </el-row>    </el-col>   </el-row>   <el-form-item size="medium" class="div-submit">    <el-button @click="resetForm('form')">取消</el-button>    <el-button type="primary" @click="submitForm('form')">提交</el-button>   </el-form-item>  </el-form> </div></template><script>/* eslint-disable */export default { data() {  return {   form: {    activityName: '',    status: '1',    productGroup: [{num:"",price:""}]   },   rules: {    activityName: [     { required: true, message: '请输入套餐名称', trigger: 'blur' }    ]   }  } }, methods: {  deleteLadder(index)  {   if(this.form.productGroup.length>1){    this.form.productGroup.splice(index,1);   }  },  addLadder()  {   this.form.productGroup.push({num:"",price:""});  },  submitForm(formName)  {   console.log("activityName...",this.form.activityName);   this.$refs[formName].validate((valid,obj) => {    if (valid) {     this.submitFormAction();    } else {     this.$message.error("验证不通过");    }   });  },  submitFormAction()  {   this.$message.success("提交成功");  },  resetForm(formName)  {   this.$refs[formName].resetFields();   this.form.productGroup = [{num:"",price:""}];  } }}</script><style>.el-form-item { margin-bottom: 20px;}</style>

productGroupRules: { productGroupNum: [{required: true, message: '请填写商品数量', trigger: 'blur'}], productGroupPrice: [{required: true, message: '请填写优惠价格', trigger: 'blur'}]}

<el-form-item label="商品数量:" :prop="'productGroup.'+index+'.num'" :rules="productGroupRules.productGroupNum"> <el-input v-model="item.num" type="number" size="small" style="width:80px;"></el-input></el-form-item>

form: { activityName: '', status: '1', productGroup: [{num:"",price:""}]}如果是：form: { activityName: '', status: '1'},productGroup: [{num:"",price:""}]