1
我有2個自定義控件parent-control
和child-control
。我需要孩子代表父母執行功能。要求是孩子應該在家長範圍內使用。創建新的bindingContext供兒童使用查看模型
使用例
...<content-around> <!-- this is 'outerContext' bindingContext -->
<parent-control shared.bind="outerContext.something">
<div>
<child-control property="nameOfMemberOfShared"></child-control>
</div>
<div>
<span>some text here</span>
<child-control property="anotherNameOfMemberOfShared"></child-control>
</div>
</parent-control>
</content-around>...
父 - control.html
<template>
<slot></slot>
</template>
父 - control.ts(假設所有的進口)
export class ParentControlCustomElement {
@bindable shared: any;
bind(bindingContext, overrideContext) {
//here want to make sure elements rendered inside slot
//are able to access 'shared'
}
}
兒童control.html
<template>
<!-- this is for simplicity more advanced stuff needed here -->
<h1>${sharedObject[property]}</h1>
</template>
兒童control.ts(假設所有進口)
export class ChildControlCustomElement {
@bindable property: string;
sharedObject: any;
bind(bindingContext, overrideContext) {
this.sharedObject = bindingContext.shared;
// the problem is HERE!
// instead of getting a binding context pointing
// to parent-control view model I get binding context
// pointing to 'outerContext'
}
}
如何確保從parent-control
開始內部組件將獲得指向parent-control
的視圖模型的綁定上下文?
有趣的,讓我試試 –
優秀!!這按預期工作!非常感謝。 –