cyclic dependency. HttpInterceptor and TranslateService

Asked Jan 22 '18 at 07:32

Active May 31 '21 at 23:54

Viewed 2,323 times

This is discussed a lot, but I can't find how to solve my issue.

The reason is clear, I'm trying to use translateService in my interceptor, but both depends on httpClient.

I only happens when my interceptor constructor is:

  constructor(    
    private router: Router,
    private translate: TranslateService){}

If I remove translate it doesn't fails because of cyclic dependency.

So, I guess I need to access to translate in some different way but I can't find it.

How can I do it?

I tried the links suggestions, finally I got it.

constructor(    
private router: Router,
private injector: Injector){
  const translate =  injector.get(TranslateService);
}


intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
     //intercept method and:
   .catch(err => this.handleError(err));

}


private handleError(error): Observable<any> {

if (error.status === 401) {
  this.router.navigate(['/login']);
} else if (error.status === 403) {
  this.router.navigate(['/unauthorized']);
} else {
   this.injector.get(TranslateService).get(['GENERIC_ERROR', 'OK'])
}
return Observable.throw(error);

}

edited Jan 22 '18 at 09:55

asked Jan 22 '18 at 07:32

cucuru

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provide TranslateService under providers in NgModule – Vignesh Jan 22 '18 at 07:34
Please, update the question with how exactly you use the service there. – Estus Flask Jan 22 '18 at 07:35
Possible duplicate of [angular 4.3x dynamic http interceptor](https://stackoverflow.com/questions/46470469/angular-4-3x-dynamic-http-interceptor) – Estus Flask Jan 22 '18 at 07:39
1

to avoid circular dependency try use injector, see, e.g. https://stackoverflow.com/questions/37482460/getting-instance-of-service-without-constructor-injection but you can re-think your code. – Eliseo Jan 22 '18 at 07:54
edit with suggestions – cucuru Jan 22 '18 at 09:32

cyclic dependency. HttpInterceptor and TranslateService

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