A way to load service to all of the components in angular 2

Question

I built a service that called lang.service.ts. What it does is simply a key: value mechanism. Whenever I need it to my component, I import it and declare it in the constructor and then I use it as {{lang('key').text}}. so far, so good.

The thing is that I've noticed that I'm gonna load it for each component, like for view-header.component.ts, view-footer.components.ts and a lot of other components. I never used Angular 1, but IIRC, I could do there something like rootScope.lang(..) and it could've accomplish what I was looking for. Is there a way to do something like that in Angular 2?

Answer 1

If you register your service at your root componet, all child components will have access to the service.

On your root component...

import { Component } from '@angular/core';

import { YourService } from './my-servive.service.ts';
import { ChildComponent } from './child-component.component.ts';

@Component({
  selector: 'root-component',
  providers: [YourService],
  directives: [ChildComponent],
  template: `<child-component></child-component>`
})
export class RootComponent {}

On your child component...

import { Component } from '@angular/core';
import { YourService } from './my-servive.service.ts';

@Component({
  selector: 'child-component'
})
export class ChildComponent {
  contructor(private myService: YourService) {}
}

Hope this help you.