多重 form 表单验证

<el-form :model="data" :rules="rules" ref="data" class="demo-ruleForm">

// 基础表单验证
<el-form-item
  label=""
  prop="code"
  :rules="rules.code"
>
  <el-input
    v-model="data.bidbat_code"
    type="text"
    placeholder="请输入批次号"
  ></el-input>
</el-form-item>

// 多重
<div v-for="(item, i) in data.items" :key="i">
  <el-form-item
    label=""
    :prop="'items.' + i + '.po_mcode'"
    :rules="rules.po_mcode"
  >
    <el-input
      type="text"
      maxlength="30"
      v-model="item.po_mcode"
      clearable
    ></el-input>
  </el-form-item>
</div>
</el-form>