public function readAllProjectByCategory($categoryId)
{
$projects = (new CurdUtil($this->projectModel))->readAll('project_id desc', array('category_id' => $categoryId));
$html = '';
foreach ($projects as $project) {
$html .= "<option value={$project['project_id']}>{$project['project_name']}</option>";
}
ResponseUtil::json($html);
}
