groupModel->create($name, $external_id); } public function updateGroup($group_id, $name = null, $external_id = null) { $values = array( 'id' => $group_id, 'name' => $name, 'external_id' => $external_id, ); foreach ($values as $key => $value) { if (is_null($value)) { unset($values[$key]); } } return $this->groupModel->update($values); } public function removeGroup($group_id) { return $this->groupModel->remove($group_id); } public function getGroup($group_id) { return $this->groupModel->getById($group_id); } public function getAllGroups() { return $this->groupModel->getAll(); } }