public static function getItemsByCategory($id)
{
$treeNodes = Tree::getTreesById($id);
//category has children
if ($treeNodes) {
$categories = '(';
foreach ($treeNodes as $key => $treeNode) {
$categories = $categories . $key . ',';
}
$categories = substr($categories, 0, strlen($categories) - 1) . ')';
$items = static::find()->where('category_id in ' . $categories);
} else {
$tree = Tree::findOne(['id' => $id]);
if ($tree) {
$items = static::find()->where(['category_id' => $tree->id]);
} else {
return false;
}
}
return $items;
}
