laravel 没有返回语句的laravel中的重定向
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Redirection in laravel without return statement
提问by anwerj
i have this blogsController, the create function is as follows.
我有这个 blogsController，创建函数如下。
public function create() {
if($this->reqLogin()) return $this->reqLogin();
return View::make('blogs.create');
}
In BaseController, i have this function which checks if user is logged in.
在 BaseController 中，我有这个功能来检查用户是否登录。
public function reqLogin(){
if(!Auth::check()){
Session::flash('message', 'You need to login');
return Redirect::to("login");
}
}
This code is working fine , but it is not what is need i want my create function as follows.
这段代码工作正常，但它不是我想要的创建函数，如下所示。
public function create() {
$this->reqLogin();
return View::make('blogs.create');
}
Can i do so?
我可以这样做吗？
Apart from that, can i set authantication rules , like we do in Yiiframework, at the top of controller.
除此之外，我可以像在Yii框架中那样在控制器顶部设置身份验证规则吗？
采纳答案by Laurence
You should put the check into a filter, then only let the user get to the controller if they are logged in in the first place.
您应该将支票放入过滤器中，然后只让用户在首先登录的情况下访问控制器。
Filter
筛选
Route::filter('auth', function($route, $request, $response)
{
if(!Auth::check()) {
Session::flash('message', 'You need to login');
return Redirect::to("login");
}
});
Route
路线
Route::get('blogs/create', array('before' => 'auth', 'uses' => 'BlogsController@create'));
Controller
控制器
public function create() {
return View::make('blogs.create');
}
回答by tacone
Beside organizing your code to fit better Laravel's architecture, there's a little trick you can use when returning a response is not possible and a redirect is absolutely needed.
除了组织您的代码以更好地适应 Laravel 的架构之外，还有一个小技巧可以在无法返回响应并且绝对需要重定向时使用。
The trick is to call \App::abort()and pass the approriate code and headers. This will work in most of the circumstances (excluding, notably, blade views and __toString()methods.
诀窍是调用\App::abort()并传递适当的代码和标头。这将适用于大多数情况（特别是刀片视图和__toString()方法除外。
Here's a simple function that will work everywhere, no matter what, while still keeping your shutdown logic intact.
这是一个简单的函数，它可以在任何地方使用，无论如何，同时仍然保持你的关闭逻辑完整。
/**
* Redirect the user no matter what. No need to use a return
* statement. Also avoids the trap put in place by the Blade Compiler.
*
* @param string $url
* @param int $code http code for the redirect (should be 302 or 301)
*/
function redirect_now($url, $code = 302)
{
try {
\App::abort($code, '', ['Location' => $url]);
} catch (\Exception $exception) {
// the blade compiler catches exceptions and rethrows them
// as ErrorExceptions :(
//
// also the __toString() magic method cannot throw exceptions
// in that case also we need to manually call the exception
// handler
$previousErrorHandler = set_exception_handler(function () {
});
restore_error_handler();
call_user_func($previousErrorHandler, $exception);
die;
}
}
Usage in PHP:
在 PHP 中的用法：
redirect_now('/');
Usage in Blade:
在刀片中的使用：
{{ redirect_now('/') }}
