On thoughtgram blog , I only found examples of DI with service. I want the
be able to extend an application by only replacing some services,
components, templates and css.
Replacing a component doesn't work. In my example, AppComponent is still
using the FooComponent, not the FooOverrideComponent.
I found a solution but it is not very elegant, I would prefer using
dependency injection.
class myViewResolver extends ViewResolver{
resolve(component): ViewMetadata {
var view = super.resolve(component);
if (component.name === 'AppComponent') {
view.directives[0] = FooOverrideComponent; //Replace
FooComponent by FooOverrideComponent
}
return view;
}
}
bootstrap(AppComponent, [
provide(FooComponent, {useClass:FooOverrideComponent}),
provide(ViewResolver, {useClass:myViewResolver})
]);
Thanks,
Stephane
2016-05-30 21:54 GMT-04:00 Sander Elias <[email protected]>:
> Hi Stephane,
>
> Yes, the injector makes possible what you want. However, I would not do it
> quite like that. There is no problem in having multiple components using
> the same selector. Just use the component you need, at the place you need
> it.
> The only reason to do what you propose, is to replace a component, that is
> used many times throughout the whole app.
>
> PS, I recall a thoughtgram blog post over exactly this issue, it might be
> worth for you to trace that down.
>
> Regards
> Sander
>
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