Laravel 4:组中的路由抛出notfoundhttpexception

我注意到Laravel 4在使用Routes时有一点特殊性。我有一个路由组，看起来像这样：

// Employers routes
Route::group(array('prefix' => 'employers'), function(
    Route::get('/', array('as' => 'employers.index', 'uses' => 'EmployersController@index'));
    Route::get('create', array('as' => 'employers.create', 'uses' => 'EmployersController@create'));
    Route::post('/', array('as' => 'employers.store', 'uses' => 'EmployersController@store', 'before' => 'csrf'));
    Route::get('search', array('as' => 'employers.search', 'uses' => 'EmployersController@search'));
    Route::get('{id}', array('as' => 'employers.show', 'uses' => 'EmployersController@show'));
    Route::get('{id}/edit', array('as' => 'employers.edit', 'uses' => 'EmployersController@edit'));
    Route::patch('{id}/update', array('as' => 'employers.update', 'uses' => 'EmployersController@update', 'before' => 'csrf'));
    Route::delete('{id}/destroy', array('as' => 'employers.destroy', 'uses' => 'EmployersController@destroy', 'before' => 'csrf'));
));

然而，我注意到，当我尝试添加新路由时，我必须将其添加到第一个路由之前，才能使用{id}通配符作为其url中的第一个参数，否则我会得到notfoundhttpexception。这正常吗？例如，这是有效的（在employers.search路由中添加：

// Employers routes
Route::group(array('prefix' => 'employers'), function(
    Route::get('/', array('as' => 'employers.index', 'uses' => 'EmployersController@index'));
    Route::get('create', array('as' => 'employers.create', 'uses' => 'EmployersController@create'));
    Route::post('/', array('as' => 'employers.store', 'uses' => 'EmployersController@store', 'before' => 'csrf'));
    Route::get('{id}', array('as' => 'employers.show', 'uses' => 'EmployersController@show'));
    Route::get('search', array('as' => 'employers.search', 'uses' => 'EmployersController@search'));
}

是否导致未找到路由employers.search？