about using the CSRF filter in your forms. Often you will want to apply a filter to many routes. Instead of attaching the filter to each individual route, you can assign it to many routes at the same time as a group:
Route::group(array('before' => 'csrf'), function()
{
Route::post('/user', function()
{
});
Route::post('post', function()
{
});
});
In this example I’m protecting many routes against CSRF attacks
(What is a CSRF attack? look up Google) using a filter and a group.