如何使用Rxjs在Angular4中检查来自Observable的响应并显示警报以显示不同的响应？

Question

I have this service:

         return this.http.post(this.loginUrl, bodyString, options)
                     .map((res:Response) => res.json())
                     .catch((error:any) => Observable.throw(error || 'Server error'));

with the function: auth(body: Object) : Observable<Response>

And then I'm subscribing in the component:

this.loginService.auth(value).subscribe(
              result => {
                swal('Error', result, 'warning')
              },
              err => {
                  // Log errors if any
                  console.log(err);
              });

How can I handle the value of the result and where? I want to display it based on his different values. You cannot check in the subscribe with if and == .

Answer 1

You can check the value of the result returned in the subscription. I'm going to assume result is a simple string, but it could actually be anything. Check what's being returned in your result object and see whats most appropriate.

this.loginService.auth(value).subscribe((result) => {

    if (result === 'ok') {
        // its all good
    }

    if (result === 'bad') {
        // its bad
    }

}, (err) => {
    // Log errors if any
    console.log(err);
});