laravel 重定向后不保留会话数据

Session data not preserved after redirection

提问by Drown

I'm trying to implement some custom flash messages and I'm having some issues with the session data being destroyed after a redirect.

我正在尝试实现一些自定义 Flash 消息，但在重定向后会话数据被破坏时遇到了一些问题。

Here's how I create my flash messages :

以下是我创建 Flash 消息的方法：

flash('Your topic has been created.');

Here's the declaration of the flash()function :

这是flash()函数的声明：

function flash($message, $title = 'Info', $type = 'info')
{   
    session()->flash('flash', [
        'message' => $message,
        'title' => $title,
        'type' => $type,        
    ]); 
}

And here is how I'm checking the session/displaying the flash messages, using SweetAlerts. This code is included at the bottom of the main layout file that I'm extending in all my Blade templates.

这是我使用 SweetAlerts 检查会话/显示 Flash 消息的方式。此代码包含在我在所有 Blade 模板中扩展的主布局文件的底部。

@if(Session::has('flash'))
    <script>
        $(function(){
            swal({
                title: '{{ Session::get("flash.title") }}',
                text : '{{ Session::get("flash.message") }}',
                type : '{{ Session::get("flash.type") }}',
                timer: 1500,
                showConfirmButton: false,           
            })
        });         
    </script>
@endif

The code above will work if I call the flash()function before displaying a view, like so :

如果我flash()在显示视图之前调用该函数，则上面的代码将起作用，如下所示：

public function show($slug)
{
    flash('It works!');
    return view('welcome');
}

However, it will not work if I call it before doing a redirect to another page, like so :

但是，如果我在重定向到另一个页面之前调用它，它将不起作用，如下所示：

public function show($slug)
{
    flash('It does not work');
    return redirect('/');
}

Why is the session data lost on redirect? How can I make it persists so that I can display my flash message?

为什么重定向时会话数据会丢失？我怎样才能让它持续存在，以便我可以显示我的 Flash 消息？

回答by raphael

I found out that it is necessary to apply the web middleware on all routes. Drown has mentioned to do so, but since March 23st 2016, Taylor Otwell changed the default RouteServiceProvider at https://github.com/laravel/laravel/commit/5c30c98db96459b4cc878d085490e4677b0b67ed

我发现有必要在所有路由上应用 web 中间件。Drown 已经提到这样做，但自 2016 年 3 月 23 日以来，Taylor Otwell 在https://github.com/laravel/laravel/commit/5c30c98db96459b4cc878d085490e4677b0b67ed更改了默认的 RouteServiceProvider

By that change the web middleware is applied automatically to all routes. If you now apply it again in your routes.php, you will see that webappears twice on the route list (php artisan route:list). This exactly makes the flash data discard.

通过该更改，Web 中间件会自动应用于所有路由。如果你现在在你的 routes.php 中再次应用它，你会看到它web在路由列表中出现了两次 ( php artisan route:list)。这正是使闪存数据丢弃。

Also see: https://laracasts.com/discuss/channels/laravel/session-flash-message-not-working-after-redirect-route/replies/159117

另见：https: //laracasts.com/discuss/channels/laravel/session-flash-message-not-working-after-redirect-route/reply/159117

回答by Drown

It turns out that with Laravel 5.2, the routes have to be wrapped in the web middleware for the session to work properly.

事实证明，在 Laravel 5.2 中，路由必须包含在 Web 中间件中，会话才能正常工作。

This fixed it :

这修复了它：

Route::group(['middleware' => ['web']], function () {
    // ...
    Route::post('/topics/{slug}/answer', 'PostsController@answer');
    Route::post('/topics/{slug}/unanswer', 'PostsController@unanswer');
    Route::post('/topics/{slug}/delete', 'PostsController@delete');
});

回答by aleixfabra

With Laravel 5.2.34, all routes are using web middleware by default.

在 Laravel 5.2.34 中，所有路由默认都使用 web 中间件。

Therefore, change this:

因此，更改此：

Route::group(['middleware' => ['web']], function () { // This will use 2 web middleware

    // ...

    Route::post('/foo', 'FooController@foo');

});

To this:

对此：

Route::group([], function () { // This will use the default web middleware

    // ...

    Route::post('/foo', 'FooController@foo');

});

And then in your controller you could use:

然后在您的控制器中，您可以使用：

class FooController extends Controller
{
    ...

    public foo() 
    {
        ...

        return redirect('/foo')->withSuccess('Success!!');
        // or
        return redirect('/foo')->with(['success' => 'Success!!']);
    }

    ...
}

回答by Harry Bosh

The issue i had was Session::save()preventing swal from showing after redirect.

我遇到的问题是Session::save()阻止 swal 在重定向后显示。

回答by Rajesh

Please check APP/kernel.php

请检查APP/kernel.php

\Illuminate\Session\Middleware\StartSession::class,

\Illuminate\Session\Middleware\StartSession::class,

is define multiple times

被定义多次

protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
    \Illuminate\Session\Middleware\StartSession::class,
  ];

protected $middlewareGroups = [
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
        \Illuminate\Routing\Middleware\SubstituteBindings::class,
    ],

You can comment any one or delete it. We need to define one time only.

您可以评论任何一个或删除它。我们只需要定义一次。

回答by Fusion

Redirect with flash data is done like this:

使用闪存数据重定向是这样完成的：

redirect("/blog")->with(["message"=>"Success!"]);

In early Laravel 5.2versions, all of your Flashand Sessiondata are stored only if your routes are inside web middlewaregroup.

在Laravel 5.2的早期版本中，所有的Flash和Session数据存储只有当你的路由都在里面web middleware组。

As of Laravel 5.2.34, all routes are using web middleware by default. If you will put them into middleware web group again, you will apply web middleware on your routes twice - such routes will be unable to preserve Flashor Sessiondata.

从Laravel 5.2.34 开始，所有路由都默认使用 web 中间件。如果你再次将它们放入中间件 web 组，你将在你的路由上应用两次 web 中间件 - 这样的路由将无法保存Flash或Session数据。

回答by nrivero

have you tired using "redirect with"

您是否厌倦了使用“重定向”

https://laravel.com/docs/5.2/responses#redirecting-with-flashed-session-data

https://laravel.com/docs/5.2/responses#redirecting-with-flashed-session-data

回答by Hein Mynn

Check your App\Kernel.php file. There may be multiple lines of \Illuminate\Session\Middleware\StartSession::class,Comment one from $middlewareGroups.

检查您的 App\Kernel.php 文件。\Illuminate\Session\Middleware\StartSession::class 中可能有多行，注释$middlewareGroups 中的一行。

protected $middleware = [
        \App\Http\Middleware\TrustProxies::class,
        \App\Http\Middleware\CheckForMaintenanceMode::class,
        \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \App\Http\Middleware\TrimStrings::class,
        \Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,
    ];

protected $middlewareGroups = [
        'web' => [
            \App\Http\Middleware\EncryptCookies::class,
            \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
            **\Illuminate\Session\Middleware\StartSession::class,**
            // \Illuminate\Session\Middleware\AuthenticateSession::class,
            \Illuminate\View\Middleware\ShareErrorsFromSession::class,
            \App\Http\Middleware\VerifyCsrfToken::class,
            \Illuminate\Routing\Middleware\SubstituteBindings::class,
        ],

回答by Anthony Kal

Additional to @Harry Boshanswer,

除了@Harry Bosh 的回答，

In Laravel there an issue when Session::save()happen inside the middleware, this make _flash session gone after redirectionhappen

在 Laravel 中Session::save()，中间件内部发生问题时，这会使_flash 会话在重定向发生后消失

this can be fix by using alternative :

这可以通过使用替代解决方案：

// replace your Session::save() to this

session(['yoursessionvar' => $examplevar]); // this will save laravel session