Laravel: Locale Session: Controller获取参数来改变它，但是它不能.你必须硬编码

Question

我试图创建一个表单，并取消Ajax。是的，当我var_dump它并退出时，表单至少会将参数发送到控制器以查看它是否获得了新值，是的，它确实获得了新值，但你猜怎么着?问题是:

即使从控制器接收到的Input::get('locale')是我从表单发送的，下面的代码也不能改变会话。

控制器:

public function languagechooser()
    {   
         $session = Input::get('language');
         var_dump($session);exit;
         Session::set('locale',$session);
         returnRedirect::back();
    }

改变会话的唯一方法是硬编码它，像这样(注意'en':

public function languagechooser()
        {   
             $session = Input::get('language');
             var_dump($session);exit;
             Session::set('en');
             returnRedirect::back();
        }

但我不明白为什么。一旦它从变量接收到它，它应该留在那里，但看起来它没有。它到底是一个变量吗?但在youtube上phpacademy做同样的事情(只是使用Laravel 4)，而我使用5

和Form，只是一个Form

<form action="{!!URL::route('languagechooser')!!}" method  ="post">
<select class="form-control" name="language">
<option value="fr">fr</option>
<option value=en">en</option>
<option value="es">es</option>  
<option value="ru">ru</option>
<option value="it">it</option>
<option value="de">de</option>
</select>   
<button class="btn btn-primary pull-right" type="submit">Search</button>
    {!!Form::token()!!}
</form>

Answer 1

routes.php

Route::get('/', 'WelcomeController@index');
Route::post('languagechooser', [
    'as' => 'languagechooser',
    'uses' => 'WelcomeController@changeLanguage'
]);

view - welcome.blade.php

<!-- I think this bit should help you out! -->
<p>
    @if( Session::has('locale') )
        Locale: {{ Session::get('locale') }} <br>
        Message: {{ Lang::get('test.message') }}
    @else
        no session locale set
    @endif
</p>

<form action="{!! route('languagechooser') !!}" method = "post">
<select class="form-control" name="language">
    <option value="en">en</option>
    <option value="es">es</option>  
</select>
<button class="btn btn-primary pull-right" type="submit">Search</button>
    {!!Form::token()!!}
</form>

Controller - WelcomeController.php

public function changeLanguage()
{
    $lang = Input::get('language');
    Session::put('locale', $lang);
    return Redirect::back();
}

创建中间件:php artisan make:middleware Locale

中间件Locale.php

<?php namespace AppHttpMiddleware;
use Closure;
use Session;
use App;
use Config;
class Locale {
    /**
     * Handle an incoming request.
     *
     * @param  IlluminateHttpRequest  $request
     * @param  Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $language = Session::get('locale', Config::get('app.locale'));
        App::setLocale($language);
        return $next($request);
    }
}

在HttpKernel.php文件中添加了这个:'AppHttpMiddlewareLocale'到$middleware数组，所以它在每次请求时都被加载。

protected $middleware = [
        'IlluminateFoundationHttpMiddlewareCheckForMaintenanceMode',
        'IlluminateCookieMiddlewareEncryptCookies',
        'IlluminateCookieMiddlewareAddQueuedCookiesToResponse',
        'IlluminateSessionMiddlewareStartSession',
        'IlluminateViewMiddlewareShareErrorsFromSession',
        'AppHttpMiddlewareVerifyCsrfToken',
        'AppHttpMiddlewareLocale',
    ];

资源/lang/en/test.php

return [
    'message' => 'hello'
];

资源/lang/es/test.ph"

return [
    'message' => 'hola'
];

链接来源:https://laracasts.com/discuss/channels/general-discussion/where-to-setlocale-in-laravel-5-on-multilingual-multidomain-app