To declare a filter you should use a filter a static name, for example:
Route::filter('filtername',function()
{
// ...
});
Then you may use this filter in your routes like this way:
Route::get('/specialization/{slug}', array('before' => 'filtername', 'uses' => 'FrontController@specialization'));
So, whenever you use http://domain.com/specialization/eye
the filter attached to this route will be executed before the route is dispatched. Read more on documentation.
Update: For second and third routes you may check the route parameter in thew filter and do different things depending on the parameter. Also, you may use one method for both urls, technically both urls are identical to one route so use one route and depending on the param, do different things, for example you have following url
s:
http://domain.com/clinic-dr-house
http://domain.com/faq
Use a single route for both url, for example, use:
Route::get('/{param}', 'FrontController@common');
Create common
method in your FrontController
like this:
public function common($param)
{
// Check the param, if param is clinic-dr-house
// the do something or do something else for faq
// or you may use redirect as well
}