I had same problem. I need show url for a search engine
I use two routes like this
Route::get('buscar/{nom}', 'FrontController@buscarPrd');
Route::post('buscar', function(){
$bsqd = Input::get('nom');
return Redirect::action('FrontController@buscarPrd', array('nom'=>$bsqd));
});
First one used to show url like we want
Second one used by form and redirect to first one