import { MyDataService } from './services/my-data.service';
constructor(private posting: MyDataService
  ) {}

  ngOnInit() {
    this.posting.postMethod().subscribe(
    (response => {
      console.log(response)
    }));
}
}

@Injectable()

export class MyDataService {

  constructor(private http: Http)
  { }


 postMethod(model: any  ) {
    return this.http.post("http ://", model)
      .map(res => res.json());
  }
}