TaskChangeDirectorRule::execute

public function execute(AccessibleItem $task = null, $params = null): bool
{
	if (!$task)
	{
		$this->controller->addError(static::class, 'Incorrect task');
		return false;
	}

	if (!$this->checkParams($params))
	{
		$this->controller->addError(static::class, 'Incorrect params');
		return false;
	}

	if ($this->user->isAdmin())
	{
		return true;
	}

	// user can update task
	if (!$this->controller->check(ActionDictionary::ACTION_TASK_EDIT, $task, $params))
	{
		$this->controller->addError(static::class, 'Access to edit task denied');
		return false;
	}

	$directors = $params->getMembers(RoleDictionary::ROLE_DIRECTOR);
	if (empty($directors))
	{
		$this->controller->addError(static::class, 'Director is undefined');
		return false;
	}

	if ($directors[0] === $this->user->getUserId())
	{
		return true;
	}

	$this->controller->addError(static::class, 'Access to change director denied');
	return false;
}