Laravel 自动授权讲解
看到这部分文档,经常看见的一句话就是php artisan make:auth,经常好奇这段代码到底干了什么,现在就来扒一扒。
路由
路由文件中会新加入以下内容:
Auth::routes(); Route::get(\'/home\',\'HomeController@index\')->name(\'home\');
首先先是Auth::route();,这句代码等于以下全部设置(文件位置是\\Illuminate\\Routing\\Router.php):
/** * Register the typical authentication routes for an application. * * @return void */ public function auth() { // Authentication Routes... $this->get(\'login\', \'Auth\\LoginController@showLoginForm\')->name(\'login\'); $this->post(\'login\', \'Auth\\LoginController@login\'); $this->post(\'logout\', \'Auth\\LoginController@logout\')->name(\'logout\'); // Registration Routes... $this->get(\'register\', \'Auth\\RegisterController@showRegistrationForm\')->name(\'register\'); $this->post(\'register\', \'Auth\\RegisterController@register\'); // Password Reset Routes... $this->get(\'password/reset\', \'Auth\\ForgotPasswordController@showLinkRequestForm\')->name(\'password.request\'); $this->post(\'password/email\', \'Auth\\ForgotPasswordController@sendResetLinkEmail\')->name(\'password.email\'); $this->get(\'password/reset/{token}\', \'Auth\\ResetPasswordController@showResetForm\')->name(\'password.reset\'); $this->post(\'password/reset\', \'Auth\\ResetPasswordController@reset\'); }
这一部分先讲注册,首先,可以看到登录(login)的路由指向的是Auth\\LoginController@showLoginForm,这个控制器是app\\Http\\Auth\\LoginController.php,这里贴一下他的代码:
class LoginController extends Controller { /* |-------------------------------------------------------------------------- | Login Controller |-------------------------------------------------------------------------- | | This controller handles authenticating users for the application and | redirecting them to your home screen. The controller uses a trait | to conveniently provide its functionality to your applications. | */ 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\'); } }
而其中并没有设置showLoginForm方法,该方法被保存在trait AuthenticatesUsers中,该方法的代码如下:
public function showLoginForm() { return view(\'auth.login\'); }
就是返回一个视图,下面我们来看该视图:
<form class=\"form-horizontal\" method=\"POST\" action=\"{{ route(\'login\') }}\"> </form>
而其中最重要的就是看这个表单被提交到了哪里,结合上面的路由表,可以看到是
public function login(Request $request) { $this->validateLogin($request); /** * protected function validateLogin(Request $request) { $this->validate($request, [ $this->username() => \'required|string\', \'password\' => \'required|string\', ]); } 其中 $this->username() 就是 return \'email\'; **/ // 限制请求次数,防止暴力破解的 if ($this->hasTooManyLoginAttempts($request)) { $this->fireLockoutEvent($request); return $this->sendLockoutResponse($request); } /** // 关于 attempt 的介绍可以看我上一篇博客 protected function attemptLogin(Request $request) { return $this->guard()->attempt( $this->credentials($request), $request->has(\'remember\') ); } **/ // 如果验证通过的话 if ($this->attemptLogin($request)) { return $this->sendLoginResponse($request); } // 否则的话增加验证的统计次数 $this->incrementLoginAttempts($request); // 返回错误信息 return $this->sendFailedLoginResponse($request); }
可以看到验证的重点还是Auth::attempt()函数,而且默认是使用email进行验证。
退出操作的代码如下:
public function logout(Request $request) { $this->guard()->logout(); $request->session()->invalidate(); return redirect(\'/\'); }
$this->guard()的代码如下:
protected function guard() { return Auth::guard(); }
logout的具体的执行代码如下,别问我怎么找到的,PHPStorm的全项目文本搜索不解释:\\Illuminate\\Auth\\SessionGuard.php:
public function logout() { $user = $this->user(); $this->clearUserDataFromStorage(); if (! is_null($this->user)) { $this->cycleRememberToken($user); } if (isset($this->events)) { $this->events->dispatch(new Events\\Logout($user)); } // Once we have fired the logout event we will clear the users out of memory // so they are no longer available as the user is no longer considered as // being signed into this application and should not be available here. $this->user = null; $this->loggedOut = true; }
其中牵扯很多,那么我换种角度考虑,假设我们不考虑logout()的具体实现,而是思考如何制作自己的退出设置,那么该如何修改源码呢?好像直接修改成下面的形式就可以了:
public function logout(Request $request) { Auth::guard()->logout(); $request->session()->invalidate(); // 自定义重定向地址 return redirect(\'/\'); }
其中的很多内容都跟我们的设置无关,全自动的调用,所以我们的退出按钮就只需要运行上述代码即可。本人请测有效。
以上这篇Laravel 自动生成验证的实例分析:login / logout就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持免费资源网。
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