Laravel 4 Redirect::back() not going to previous page (refreshing current page)

php redirect laravel-4

PHP Snippet 1:

Route::get('/customer', array('as' => 'customer', 'uses' => 'MyController@showCustomer'));

PHP Snippet 2:

function saveCustomer($id) {

    ...

    Redirect::route('customer');
}

PHP Snippet 3:

if(isset($_SERVER['HTTP_REFERER']))
    return Redirect::back();

return Redirect::to('/');