Laravel 5.5 无法使用身份验证脚手架登录

Posted 2023-03-14

【中文标题】Laravel 5.5 无法使用身份验证脚手架登录

【英文标题】：Laravel 5.5 cannot login using auth scaffolding

【发布时间】：2018-12-16 03:51:48

【问题描述】：

在安装身份验证脚手架并创建数据库以存储仅使用用户名和密码的凭据后，我正在我的应用程序上进行注册 - 登录功能。我已成功注册新帐户，存储到数据库中，并重定向到管理页面。但是注销后，我无法使用以前创建的帐户登录，并且显示这样的错误消息..

Error message that prevent login

我该怎么办？

这是我的：

web.php

Route::get('/', 'FrontController@home')->name('home');

Route::get('/login', 'FrontController@login')->name('login');

Auth::routes();

Route::get('/home', 'AdminController@index')->name('admin');

Route::get('/manual', 'ManualLoginController@manual')->name('manual');

Route::get('/logout', '\App\Http\Controllers\Auth\LoginController@logout')->name('logout');

LoginController.php

<?php

namespace App\Http\Controllers\Auth;

use Auth;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\AuthenticatesUsers;

class LoginController extends Controller


    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = '/home';

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    
        $this->middleware('guest')->except('logout');
    

    public function logout(Request $request) 
          Auth::logout();
          return redirect('/login');
    

login.blade.php

<div class="container-fluid-full">         
    <div class="row-fluid">
        <div class="login-box">
            <div class="icons">
                <a href="/"><i class="halflings-icon home"></i></a>
                <a href="#"><i class="halflings-icon cog"></i></a>
            </div>
            <h2 style="font-family: 'Raleway'; font-weight: 800">Masuk sebagai administrator</h2>
            @if ($errors->any()) 
            <div class="alert alert-danger">
                <ul>
                    @foreach ($errors->all() as $error)
                        <li> $error </li>
                    @endforeach
                </ul>
            </div>
            @endif
            <form class="form-horizontal" action="route('login')" method="POST">
                @csrf
                <fieldset>
                    <div class="input-prepend" title="Username">
                        <label for="username"> __('Username') </label>

                        <span class="add-on"><i class="halflings-icon user"></i></span>

                        <input class="input-large span10 form-control $errors->has('username') ? ' is-invalid' : '' " name="username" id="username" type="text" placeholder="username" value=" old('username') " required autofocus/>

                        @if ($errors->has('username'))
                            <span class="invalid-feedback" role="alert">
                                <strong> $errors->first('username') </strong>
                            </span>
                        @endif
                    </div>


                    <div class="clearfix"></div>

                    <div class="input-prepend" title="Password">
                        <label for="password"> __('Password') </label>

                        <span class="add-on"><i class="halflings-icon lock"></i></span>

                        <input class="input-large span10 form-control $errors->has('password') ? ' is-invalid' : '' " name="password" id="password" type="password" placeholder="Password" required/>

                        @if ($errors->has('password'))
                            <span class="invalid-feedback" role="alert">
                                <strong> $errors->first('password') </strong>
                            </span>
                        @endif
                    </div>

                    <div class="clearfix"></div>

                    <div class="button-login">  
                        <button type="submit" class="btn btn-primary">  __('Login') 
                        </button>
                    </div>
                    <div class="clearfix"></div>
                </fieldset>
            </form>
        </div><!--/span-->
    </div><!--/row-->
</div>

RegisterController.php

<?php

namespace App\Http\Controllers\Auth;

use App\User;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;
use Illuminate\Foundation\Auth\RegistersUsers;

class RegisterController extends Controller


    use RegistersUsers;

    /**
     * Where to redirect users after registration.
     *
     * @var string
     */
    protected $redirectTo = '/home';

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    
        $this->middleware('guest');
    

    /**
     * Get a validator for an incoming registration request.
     *
     * @param  array  $data
     * @return \Illuminate\Contracts\Validation\Validator
     */
    protected function validator(array $data)
    
        return Validator::make($data, [
            'username' => 'required|string|max:255|unique:users',
            'password' => 'required|string|min:4|confirmed',
        ]);
    

    /**
     * Create a new user instance after a valid registration.
     *
     * @param  array  $data
     * @return \App\User
     */
    protected function create(array $data)
    
        return User::create([
            'username' => $data['username'],
            'password' => Hash::make($data['password']),
        ]);
    

FronController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class FrontController extends Controller

    public function home () 
        return view ('home');
    

    public function login () 
        return view ('login');
    

AdminController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class AdminController extends Controller

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    
        $this->middleware('auth');
    

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    
        return view('admin');
    

【参考方案1】：

默认情况下，laravel 使用email 字段进行身份验证，您可以通过在登录控制器中定义以下函数来覆盖它

public function username()

    return 'username';

详情可以查看Illuminate\Foundation\Auth\AuthenticatesUserstrait

【讨论】：

哇哦，你是我的救星！谢啦兄弟！ :D