Laravel dynamic relation loader

laravel_uri_entity_loader

<?php

// rutes.php

Route::get('/users/{userId}/events/{eventId}', function()
{
    return Response::json(entityLoader('MyApp\Core\User\User'));
});

Route::get('/users/{userId}/events', function()
{
    return Response::json(entityLoader('MyApp\Core\User\User'));
});

Route::get('/events', function()
{
    return Response::json(entityLoader('MyApp\Core\Event\Event'));
});

Route::get('/events/{eventId}', function()
{
    return Response::json(entityLoader('MyApp\Core\Event\Event'));
});

/*
|
| Dynamically loads a base entity, or any of it's relations from the URI :)
|
| If ?page is set, it sends the Paginator object
| If ?limit is set, it sets the limit
| If ?sort is set it sets the sorting as well
|
| When the URI ends with an ID and ?with=all is set, it calls the Model's
| 'which is last in the Query String) attachDown() method which should look
| like this:
|
| public function attachDown()
| {
|     return $this->load('eventType', 'etc');
| }
|
*/
function entityLoader($baseEntity)
{

    $pagingSize = 1;

    $splits = preg_split('/\//', Route::getCurrentRoute()->getPath(), -1, PREG_SPLIT_NO_EMPTY);

    // we remove the first param since we provide the namespaced class Name for the function
    array_shift($splits);

    $currentRoute = Route::getCurrentRoute();
    $routeParams = $currentRoute->getParameters();

    function isParam($asd)
    {
        if (strpos($asd, '{') !== FALSE)
            return true;
        return false;
    }

    // Instantiation of our base Entity. This will be used to start off the chaining.
    $entity = new $baseEntity;

    $runs = count($splits);

    foreach ($splits as $split) {
    
        // if are iterating on a param, we should select an Entity
        if (isParam($split)) {
            $id = array_shift($routeParams);
            $entity = $entity->find($id);

            if ($runs == 1 && Input::get('with') === 'all') {
                $entity->attachDown();
            }

        // otherwise we load the relation, and get it as well
        } else {
            $entity = $entity->load($split)->getRelation($split);

            // if the current param is the last in the URI and the page param is set, we create a Paginator
            if ($runs == 1 && Input::get('page')) {

                // if the limit param is set, we override our default setting
                if (Input::get('limit')) {
                    $pagingSize = Input::get('limit');
                }

                $paginator = Paginator::make($entity->toArray(), count($entity), $pagingSize);

                // if the sort param is set, we se the sorting as well
                if (Input::get('sort')) {
                    $paginator->appends(array('sort' => Input::get('sort')))->links();
                }

                $entity = $paginator;
            }
        }

        $runs--;
    }

    return $entity;
}