我有三个组件:Panel,PanelGroup(ul)和PanelItem(li):
面板:
@Component({
selector: "panel",
directives: [PanelGroup,PanelItem],
template: `
<panel-group>
<ng-content select="panel-item"></ng-content>
</panel-group>
`})
export default class Panel {}
panelGroup中:
@Component({
selector: "panel-group",
directives: [forwardRef(() => PanelItem)],
template: `
<ul>
<ng-content></ng-content>
</ul>`
})
export default class PanelGroup {
@ContentChildren(forwardRef(() => PanelItem)) items;
//I need to access children here and modify them eventually:
ngAfterContentInit() {
console.log(this.items.toArray()); //the array is always empty
}
}
PanelItem:
@Component({
selector: "panel-item",
directives: [forwardRef(() => PanelGroup)],
template: `
<li>
<span (click)="onClick()">
{{title}}
</span>
<panel-group>
<ng-content select="panel-item"></ng-content>
</panel-group>
</li>`
})
export default class PanelItem {
@Input() title = 'SomeTitle';
}
如上例所示,我尝试在 PanelGroup 组件中获取内容子项,但集合始终为空。还尝试将选择器添加到其中的“ng-content” - 在这种情况下,子节点永远不会被渲染,这有点奇怪。
我错过了什么吗?
这是插件:
答案 0 :(得分:6)
使用log 'this is a message' do
provider Chef::Provider::Log::MyCustomLog
end
:
descendants: true
另见angular 2 / typescript : get hold of an element in the template
答案 1 :(得分:0)
我遇到了类似的问题,但似乎也可以通过从面板项中删除select选项来解决这个问题。我假设因为select =&#39; panel-item&#39;正在寻找内容,但有一个嵌套对象作为内容。如果你删除限制(在插件示例中)它会显示它。