<!-- template中的代码 -->
<a-select
    style="width: 100%"
    v-model="formData.channelId"
    :getPopupContainer="trigger => trigger.parentNode"
    :placeholder="i18nRender('form.selectPlaceholder') + i18nRender('newsapp.config.tabbarTable.sourceChannel')"
    @change="channelChange"
>
    <a-select-option v-for="item in channels" :key="item.uuid" :value="item.uuid" :channel="item">
        {{ item.name }}
    </a-select-option>
</a-select>


<-- methods 中方法 -->
// 单选
channelChange(value, option) {
    console.log(option);
    this.formData.channelId = value;
    this.selectedChannel = option.data.attrs.channel;
}