I'm not using typescript but ES6 and angular2 alpha39 to load a component dynamically. The following code is similar to what I have in my app. What I have noticed is angular2 does not create an instance of DynamicComponentLoader nor ElementRef and inject into the constructor. They are undefined.
How can I do the injection of DynamicComponentLoader using ES6 and angular2 alpha39?
import {Component, View, Inject, DynamicComponentLoader, ElementRef } from 'angular2/angular2'
@Component({
selector: 'dc',
bindings: [ DynamicComponentLoader ]
})
@View({
template: '<b>Some template</b>'
})
class DynamicComponent {}
@Component({
selector: 'my-app'
})
@View({
template: '<div #container></div>'
})
@Inject(DynamicComponentLoader)
@Inject(ElementRef)
export class App {
constructor(
dynamicComponentLoader,
elementRef
) {
dynamicComponentLoader.loadIntoLocation(DynamicComponent, elementRef, 'container');
}
}
If you want to write code in ES7, I think the most concise approach to specify injections at this time is to use static getter for parameters
:
import {Component, View, DynamicComponentLoader, ElementRef } from 'angular2/angular2'
@Component({
selector: 'my-app'
})
@View({
template: '<div #container></b>'
})
export class App {
static get parameters() {
return [[DynamicComponentLoader], [ElementRef]];
}
constructor(dynamicComponentLoader, elementRef) {
dynamicComponentLoader.loadIntoLocation(DynamicComponent, elementRef, 'container');
}
}
See this plunker
If you want to write code in ES6, which doesn't support decorators, you must also use static getter for annotations
property. In this case you must import ComponentMetadata
and ViewMetadata
instead of Component
and View
For example:
import {ComponentMetadata, ViewMetadata, DynamicComponentLoader, ElementRef } from 'angular2/angular2';
export class App {
static get annotations() {
return [
new ComponentMetadata({
selector: 'app'
}),
new ViewMetadata({
template: '<div #container></b>'
})
];
}
static get parameters() {
return [[DynamicComponentLoader],[ElementRef]];
}
constructor(dynamicComponentLoader, elementRef) {
dynamicComponentLoader.loadIntoLocation(DynamicComponent, elementRef, 'container');
}
}
See this plunker
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