iView中DatePicker的表单验证问题

1. type="datetime"的验证方式：

<DatePicker  v-model="form.chooseDate" placeholder="选择日期" type="datetime" format="yyyy-MM-dd"/>

chooseDate: [{required: true, message: '日期不能为空!', trigger: 'blur', pattern: /.+/}],

后面添加 pattern: /.+/可验证；

2. type="daterange"的验证方式：

<FormItem label="变更起止时间：" prop="modifyTimes">
           <DatePicker
                        v-model="form.modifyTimes"
                        format="yyyy-MM-dd"
                        type="daterange"
                        placement="bottom-end"
                        placeholder="请选择起止时间"
                        class="am-datepicker"
                        @on-change="getModifyTimes">
            </DatePicker>
</FormItem>

modifyTimes: [{
    type: 'array',
    required: true,
    fields: {
        0: {type: 'date', required: true, message: '请选择起止日期'},
        1: {type: 'date', required: true, message: '请选择起止日期'}
    }
}],