ivew 日期选择表单验证

<FormItem label="开始日期：" prop="beginTime">
    <DatePicker v-model="roleForm.beginTime" type="date" placeholder="Select date" class="w200"></DatePicker>
</FormItem>

beginTime: [{required: true, type: 'date',message: '请选择开始日期', trigger: 'blur'}], // type必须填写否则验证不过