将变量类型更改为Observable后出现错误（角度7）

Question

After changing the type of a variable to an Observable, I get error messages elsewhere in my code that I can not handle.

The Observable within a authService I have created like this:

private activeBusinessCase = new BehaviorSubject<string>(null);
public activeBusinessCase$ = this.activeBusinessCase.asObservable();

In the same service, I receive the error message..

Property 'toLowerCase' does not exist on type 'BehaviorSubject '

..for this line of code:

this.router.navigate ([Constants.routing.explorer + this.activeBusinessCase.toLowerCase ()]);

---

Within my home.component.ts I get the following error message..

Property 'activeBusinessCase' is private and only accessible within class 'UserAuthService'.

..for this lines of code:

ngOnInit () {
  this.router.navigate ([Constants.routing.explorer + this.authService.activeBusinessCase.toLowerCase ()]);
}

---

But the most important error message is in my httpService , in which nothing works anymore:

  getResource (key: string, lang: string): Observable <any> {
    const headers = new HttpHeaders ({'Accept': 'text / html'});
    return this.httpClient.get ('/ resources /' + key,
      {
        headers: headers,
        responseType: 'text',
        params: new HttpParams ()
          .set ('businessCase', this.authService.activeBusinessCase? this.authService.activeBusinessCase:
            environment.default_business_case)
          .set ('long', long)
      }) Pipe. (
      catchError (() => {
        return this.translateService.get ('Not-available'). pipe (
          map (res => '<h4 style = "text-align: center">' + res + '</ h4>'));
      })
    );
  }

  getResources (long: string): Observable <Resource []> {
    return this.httpClient.get <any> ('/ resources',
      {
        params: new HttpParams ()
          .set ('long', long)
          .set ('businessCase', this.authService.activeBusinessCase? this.authService.activeBusinessCase:
            environment.default_business_case)
      });
  }

Here the error message in the console sais:

error TS2341: Property 'activeBusinessCase' is private and only accessible within class 'UserAuthService'.

---

I am still a beginner in Angular and thankful for any detailed help.

Answer 1

I can try to help but you dont have a question, anyway...

1.you cant use toLowerCase on anything else than a string ( the observable/subject can emit a string but its not a string) observables

2. if you set a property private you cant use it anywhere else. use the public one.

what do you exactly want to archieve?