Angular 4 - How can get value synchronously from an http request in another http request?

Question

I\'m using Angular 4 for my client application.

The getCustomer() function in customer.service calls an API to get data. This function is Observable.

This

Answer 1

Off the top of my head, in your customer.service.ts you can chain method calls with something like this:

getCustomer(id: string): Observable {
  this.authService.getAccessToken()
    .map((accessToken) => { 
      let headers = addAccessTokenToHeader(accessToken);

      let url = `${this.customersUrl}/${id}`;
      return this.http.get(url, { headers: headers })
        // rest of the code
      }); 

If it doesn't work, try replacing .map with .switchMap.