public static function all($columns = array())
{
return Cache::remember('fluxbb.categories', 7 * 24 * 60, function () {
$all = array();
$categories = Category::orderBy('disp_position', 'ASC')->orderBy('id', 'ASC')->get();
foreach ($categories as $category) {
$all[$category->id] = $category;
}
return $all;
});
}