public function index(Request $request){
  $email = $request->email;
 $password = $request->password;
if (!$email || !$password) {return redirect()->back();}
if (Auth::attempt(['email' => $email, 'password' => $password])) {
    // Authentication passed...
    $this->loggedUser = Auth::user();
    if($this->loggedUser){

        return response()->json(['isLoggedIn' => true],200);
    }

}
return response()->json(['isLoggedIn' => false],200);

}

Login (body: Object): Observable<Login[]> {
        let bodyString = JSON.stringify(body); // Stringify payload

        let options = new RequestOptions({ headers: this.headers }); // Create a request option

        return this.http.post('/index', body, options) // ...using post request
                         .map(response => {return response} ,console.log('aaa')) // ...and calling .json() on the response to return data
                         .catch((error:any) => Observable.throw(error.json().error || 'Server error' )); //...errors if any
    }