static function removeFromDatabase($id)
{
global $wpdb;
$itemsDelete = true;
$slider = new Slider();
$slider->loadFromDatabase($id);
foreach ($slider->items as $item) {
$itemsDelete = $itemsDelete && \CEOS\Slider\SliderItem::removeFromDatabase($item->getID());
}
$sql = "DELETE FROM " . \CEOS\Slider\PLUGIN_PREFIX . "sliders WHERE slid_id = %d LIMIT 1";
return $itemsDelete && $wpdb->query($wpdb->prepare($sql, $id));
}
