Retrieving data from an API using Angular

My task involves retrieving data from the Flickr API, specifically the "photo" array from a given URL. While I have successfully achieved this by fetching the data in the app.component and manipulating it accordingly, I realize that this approach may not be ideal.

Here are my attempts:

photo.ts:

  export class Photo {
    title: string;
    farm: number;
    secret: string;
    server: string;
    owner: string;
    id: string;
  };

app.component.ts:

  export class AppComponent implements OnInit {

    photos: Photo[];

    constructor(private http: HttpService) {}

    ngOnInit() {
      this.getData();
    }

    getData() {
      this.http.getData().subscribe(data => {
        this.photos = data;
      });
    }
  }

And now onto my main obstacle, http.service.ts:

export class HttpService {

  constructor(private http: HttpClient) { }

  getData(): Observable<Photo[]> {
    return this.http.get('https://api.flickr.com/path')
      .map(res => res.photos.photo);
  }
}

Although I believe everything is set up correctly, I encounter an error:

ERROR in src/app/http.service.ts(18,23): error TS2339: Property 'photos' does not exist on type 'Object'.

Answer №1

Consider specifying res as type 'any' directly

fetchData(): Observable<Picture[]> {
  return this.http.get('https://api.flickr.com/path')
    .map((res:any) => res.photos.picture);
}

Answer №2

Consider using this code snippet in your photo.ts file to ensure the response structure matches

export interface Photo {
    title: string,
    farm: number,
    secret: string,
    server: string,
    owner: string,
    id: string,
    isFriend: number,
    isFamily: number,
    isPublic: number
  };

Also, remember to update your callback function with this.photos = data.photos.photo

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