In every project we have minimum 2 sections. First is User Section and second is Admin Section and In our routes we want to put authentication check each time when page is loaded.

I can easily explain this by using simple example.

Route::group(array('before' => 'auth'), function(){
    Route::group(array('before' => 'AdminCheck'), function()    {
        Route::get('admin/dashboard','AdminController@index');
        Route::get('admin/manageUser','AdminController@userManagement');
        Route::get('admin/edituserinfo/{id}','AdminController@edituserinfo');
        Route::get('admin/edituserskill/{id}','AdminController@edituserskill');
        Route::get('/admin/editgroupinfo/{id}','AdminController@editgroupinfo');
        Route::get('/admin/editqueryinfo/{id}','AdminController@editqueryinfo');
        Route::get('/admin/addGroup','AdminController@addGroup');
        Route::get('/admin/manageGroup','AdminController@groupManagement');     
        Route::get('/admin/GetallConnections/{id}','AdminController@getrawconnectiondata');
        Route::get('admin/help','AdminController@PendingWork');
        Route::get('admin/about','AdminController@PendingWork');
        Route::get('/admin/manageVanityUrls','AdminController@vanityUrlsManagement');
        Route::get('/admin/managequeries','AdminController@queryManagement');
        Route::get('/admin/addvanity','AdminController@addvanity');
        Route::get('/admin/editvanityinfo/{id}','AdminController@editvanityinfo');
        Route::get('admin/report','AdminController@report'); 
        Route::get('admin/viewnote_detail/{request_id}','AdminController@viewnote_detail'); 
        Route::get('admin/viewreq_detail/{request_id}/{action}','AdminController@viewreq_detail');  
    });
});

That I have used in my routes.php. By using this example we will put authentication Check each time the Page reloads.