Angular >= 4.3, httpClient.get params empty

user_5404186 0
Viewed 4850

I'm trying to migrate my Http requests to HttpClient requests. I was able to migrate my post queries but I'm facing a problem while migrating get queries. When I do so, my backend doesn't receive any parameters respectively, it tells me that the parameters are not provided and empty.

Did I do something wrong?

import {HttpClient, HttpHeaders, HttpParams} from '@angular/common/http';

constructor(private httpClient: HttpClient) {}

findItems() {
   let params: HttpParams = new HttpParams();
   params.set('something', 'hello');

   this.httpClient.get<any[]>('http://localhost:3000/apath/', {params})
    .subscribe((results: any[]) => {
      console.log(results);
    }, (errorResponse: any) => {
       console.error(errorResponse);
    });
}

Any idea?

angular-http angular
2 Answers

HttpParams is immutable. set() creates and returns a new HttpParams instance, without mutating the instance on which set() is called. So the code should be

const params = new HttpParams().set('status', status);
user_127540890
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