????? ???? ????? Angular2 ????? ???? ???? ??

Angular2?? ????? ???? ??????? ???? ??? ??? ??? ?? ?? ??? ?????. ? ????? ????? ?? ????? ????? ???? ???? ??? ?????.

Angular? ??? ?? ??

??? ???? Angular? ??? ??? ???? ????.

import { bootstrap } from '@angular/platform-browser-dynamic';
import { AppComponent } from "./app.component.ts";

// Retrieve headers from the server
var headers = ...;

// Pass headers to bootstrap method using dependency injection
bootstrap(AppComponent, [{provide: 'headers', useValue: headers}]);

??? ??? ?? ??? ??? ??? @Inject? ???? ??? ??? ? ????. ?????:

class SomeComponentOrService {
   constructor(@Inject('headers') private headers) {}
}

??? ?? RequestOptions ??? ??

?? ??? ?? BaseRequestOptions ???? ??? ? ????.

class MyRequestOptions extends BaseRequestOptions {
  constructor (private headers) {
    super();
  }
} 

// Retrieve header values from the server
var values = ...;
var headers = new MyRequestOptions(values);

// Pass the custom request options to the bootstrap method
bootstrap(AppComponent, [{provide: BaseRequestOptions, useValue: headers}]);

? ??? ???? ??? ?? ??? ?? ??? ? ????. ??? ?? ?? ??? ??? ?? ??? ? ?? ????? ??? ?? ?? ??

APP_INITIALIZER ??

?? ??? Angular(RC.5 ??)??? APP_INITIALIZER ??? ???? ????? ????? ????? ??? ??? ???? ??? ??? ? ????. ? ?????.

function loadContext(context: ContextService) {
  return () => context.load();
}

@NgModule({
  ...
  providers: [ ..., ContextService, { provide: APP_INITIALIZER, useFactory: loadContext, deps: [ContextService], multi: true } ],
})

? ?? ??? ????? ????? ??? ???? ??? ? ?? ??? ??????? ??? ? ????.

??

??? ??? ???? ????? ???? ????? Angular2 ????? ???? ??? ? ???, ?? ?? ??? ????? ?? ??? ???? ?????? ??? ???? ???? ?????.

? ??? ??? ??? ????? Angular 2 ????? ??? ??? ??? ? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!