laravel google-oauth为什么不能要求获得年龄？

Question

You are about to customize Google's login.

Controller

 public function callback(Request $request)
{



    try {
        $socialiteLogin = true;            

        $googleUser = Socialite::driver('google')->user();  
        $existUser = User::where('email',$googleUser->email)->first();



        if($existUser) {    
            Auth::loginUsingId($existUser->id);
            return redirect()->to('/home');
        }
        else {

            return $request->age;   // <====
            if(!$request->address && !$request->country){

                return redirect(route('socialite.register'));
            }  



            $user = new User;
            $user->name = $googleUser->name;
            $user->email = $googleUser->email;
            $user->password = md5(rand(1,10000));
            $user->socialite = 1;
            $user->save();
            Session::put('newUser',$googleUser->name);
            Event::fire(new SendMail($googleUser->email,$googleUser->name));
            Auth::loginUsingId($user->id);

            return redirect()->to('/home')->with('socialiteLogin',$socialiteLogin);
        }

    } 
    catch (Exception $e) {
        return 'error';
    }
}

View

<form action="{{ url('/redirect') }}" method="get" style="margin-top:8%;margin-bottom:8%" enctype="multipart/form-data">
            @csrf

            <div class="form-row">
                <div class="form-group col-md-6">
                    <label>나이</label>
                    <input type="number" class="form-control" name="age" value="{{ old('age') }}" min="1" max="120"
                        required>
                </div> <!-- form-group end.// -->
                <div class="form-group col-md-6">
                    <label>성별</label>
                    <select id="inputState" class="form-control" name="gender" required>
                        <option selected value="남자">남자</option>
                        <option value="여자">여자</option>
                    </select>
                </div> <!-- form-group end.// -->
            </div> <!-- form-row.// -->

            <div class="form-row">
                <div class="form-group col-md-6">
                    <label>주거지</label>
                    <input type="text" class="form-control" name="address" value="{{ old('address') }}"
                        autocomplete=off required>
                </div> <!-- form-group end.// -->
                <div class="form-group col-md-6">
                    <label>국적</label>
                    <select id="inputState" class="form-control" name="country" required>
                        <option selected value="한국">한국</option>
                        <option value="일본">일본</option>
                    </select>
                </div> <!-- form-group end.// -->
            </div> <!-- form-row.// -->