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[英]Passing value from Parent component to child component for ngForm in angular2?
[英]Passing a value to a child component Angular2
我正在嘗試將值從父組件傳遞到子組件,我對此進行了嘗試:
這是我的父組件:
import {Component, View, NgFor} from 'angular2/angular2';
import {DisplayCard} from '../display-card/display-card';
@Component({
selector: 'display'
})
@View({
templateUrl: './components/display/display.html',
directives: [DisplayCard, NgFor]
})
export class Display {
displays: Array<any>;
constructor(){
this.displays = [
{name: "Lobby", appName: "Animal App", Source: 3},
{name: "Wall", appName: "Idk App", Source: 3},
{name: "Other Wall", appName: "Monkey App", Source: 3},
{name: "Lobby Kiosk", appName: "Car App", Source: 3},
{name: "Another Brick in the Wall", appName: "Pink Floyd App", Source: 3},
]
}
}
父組件HTML:
<div class="col-md-3" *ng-for="#display of displays">
<display-card name="{{display.name}}"></display-card>
</div>
子組件:
import {Component, View} from 'angular2/angular2';
@Component({
selector: 'display-card'
})
@View({
templateUrl: './components/display-card/display-card.html'
})
export class DisplayCard{
name: string;
}
子HTML:
<div class="display-card">
<div class="display-card-header">
</div>
<div class="display-card-body">
<h1 class="display-card-title">{{name}}</h1>
<h4 class="display-card-subtitle"></h4>
</div>
</div>
我將name
屬性添加到子組件中,因為這是我嘗試時遇到的錯誤:
EXCEPTION: Can't bind to 'name' since it isn't a known property of the '<display-card>' element and there are no matching directives with a corresponding property
使用組件甚至有可能嗎?
您需要在Component聲明中指定properties
:
@Component({
selector: 'display-card',
properties: ['name']
})
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