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angularangular-http-interceptors
Jan Testowy
Jan Testowy

Reputation: 667

Inject http client into HTTP Interceptor Angular 4

How can I inject http client into HTTP Interceptor? Whenever I do it, it throws: Uncaught Error: Provider parse errors: Cannot instantiate cyclic dependency! InjectionToken_HTTP_INTERCEPTORS ("[ERROR ->]"): in NgModule AppModule in ./AppModule@-1:-1

My interceptor looks like:

@Injectable()
export class CustomHttpInterceptor implements HttpInterceptor {

  constructor(private ehs: ErrorHandlerService,
              private localStorageService: LocalStorageService,
              private router: Router,
              private http: HttpClient
             ){}

Upvotes: 2

Views: 3670

Answers (1)

Clayton K. N. Passos
Clayton K. N. Passos

Reputation: 1362

Uou can use Injector

  constructor(inj: Injector) {
    this.auth = inj.get(AuthService)
  }

See this example: https://plnkr.co/edit/8CpyAUSJcCiRqdZmuvt9?p=preview

https://angular.io/api/core/Injector

Long discution about this issue here: https://github.com/angular/angular/issues/18224

Upvotes: 2

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