微信小程序 slot 不显示

问题:创建组件，使用带名字的slot，页面调用组件使用slot不显示

源码：

组件xml

<view class="p-item br24" style="{{style}}"><slot name="right" wx:if="{{!custBottom}}"></slot><view class="right-bottom" wx:else><view class="flex_row_st numchange"><text class="minus">-</text><input type="number" class="num-input" value="100"></input><text class="add">+</text></view><button size="mini" class="primary-color btn" bindtap="DoSignOK">添加</button></view></view>
</view>

JS:根据条件判断是否使用slot

Component({properties: {custBottom: {type: Boolean, value: false}},data: {},lifetimes: {attached() {console.log(">>> 被页面调用", this.data)}},methods: {}
});

 页面调用

 <view><productCard custBottom="{{true}}"><view slot="right">TEST</view></productCard><productCard></productCard></view>

解决：

组件加上多slot配置，置为true

options: {multipleSlots: true
},

 修改：

Component({properties: {custBottom: {type: Boolean, value: false}},
options: {multipleSlots: true //增加此配置slot
},data: {},lifetimes: {attached() {console.log(">>> 被页面调用", this.data)}},methods: {}
});

效果：slot出来了。