public function loadCategories()
{
$categories = null;
if (\Cache::has(Category::cache_key)) {
$categories = \Cache::get(Category::cache_key);
} else {
$categories = \Cache::rememberForever(Category::cache_key, function () {
return Category::lists('title', 'slug');
});
}
\View::share('app_categories', $categories);
}
