login() {
  var headers = new Headers();
  headers.append("Accept", 'application/json');
  headers.append('Content-Type', 'application/json' );
  let options = new RequestOptions({ headers: headers });

  let data = {
    username: this.username,
    password: this.password,
    // can i pass token here to laravel?
  }

  this.http.post(this.apiUrl + '/api/login', data, options)
    .subscribe(res => {
      console.log(res);
     }, error => {
      console.log(error);// Error getting the data
  });
}

Route::post('login','ApiController@login');

public function login(Request $request) {
    echo json_encode($request->username);
    // how to create login auth here? from ionic 2?
}

public function login(Request $request)
    {
        $this->validate($request,[
            'username' => 'required',
            'password' => 'required'
        ]);
        $user = User::where('username', $request->username)
            ->orWhere('email', $request->username)
            ->first();
        if(Hash::check($request->password, $user->password)){
            return $user->toJson(JSON_PRETTY_PRINT);
        }else{
            return "{error: 'true', message: 'wrong login credentials'}";
        }
    }