vue页面el-form的model属性验证表单

在验证表单的时候，由于vue页面el-form的:model属性误写成v-model="vo",导致验证表单始终不正确。
错误写法：

<el-form v-model="vo" :rules="rules" ref="form" >
      <el-form-item prop="email">
        <el-input v-model="vo.email" style="width:90%;"></el-input>
      </el-form-item>
      <el-form-item prop="roleId">
        <el-input v-model="vo.roleId" style="width:90%;"></el-input>
      </el-form-item>
    </el-form>

正确写法：

<el-form :model="vo" :rules="rules" ref="form" >
      <el-form-item prop="email">
        <el-input v-model="vo.email" style="width:90%;"></el-input>
      </el-form-item>
      <el-form-item prop="roleId">
        <el-input v-model="vo.roleId" style="width:90%;"></el-input>
      </el-form-item>
    </el-form>