Has HttpObserve disappeared in Angular 8 release for a HttpClient get request

Question

I am developing an Angular 8 application. I am trying to implement an HttpClient get request according to the documentation: https://angular.io/api/common/http/HttpClient.

So globally I am trying to use a get(url: string, httpHeader: HttpHeaders, observe: HttpObserve, params : HttpParams) request, but it seems that HttpObserve disappeared. Can you help me?

Answer 1

Try to use it like this:

this.http.get('URL', { observe: 'response' });

Answer 2

Thank you for your answer and comment. As I want to add additional code, I answer the question rather than add a comment. My main intention doing such a request is to add HttpParams (or rather an object representing all additional parameters to my get request) to the request. Here is the service method:

  getListProduitImmobilierDTO(pagesize: number, page: number, params: HttpParams): Observable<ProduitImmobilierDTO[]> {
    const headerDict = {
      'Content-Type': 'application/json',
      Accept: 'application/json',
      'Accept-Charset': 'charset=UTF-8',
      'Access-Control-Allow-Headers': 'Content-Type'
    };
    return this.http.get('/api/produitimmobilier/all/' + pagesize + '/' + page, new HttpHeaders(headerDict), { observe: 'response' }, params).pipe(map((jsonArray: any) => jsonArray.map((jsonItem: object) => ProduitImmobilierDTO.fromJson(jsonItem))));
  }

As you can see yazantahhan, I added { observe: 'response' } in place of HttpObserve, and it indicates the following error:

Expected 1-2 arguments, but got 4.

Sorry alt255, but I can't provide a reproducible example as it is a request and it needs a server to respond to the request. What I can tell you is the following method works well:

  getListProduitImmobilierDTO(pagesize: number, page: number): Observable<ProduitImmobilierDTO[]> {
    const headerDict = {
      'Content-Type': 'application/json',
      Accept: 'application/json',
      'Accept-Charset': 'charset=UTF-8',
      'Access-Control-Allow-Headers': 'Content-Type'
    };

    const requestOptions = {
      headers: new HttpHeaders(headerDict)
    };
    return this.http.get('/api/produitimmobilier/all/' + pagesize + '/' + page, requestOptions).pipe(map((jsonArray: any) =>jsonArray.map((jsonItem) => ProduitImmobilierDTO.fromJson(jsonItem))));
}