Collection::hasUnsaved

public function hasUnsaved(): bool
{
	/** @var ActiveRecord $entity */
	foreach ($this as $entity)
	{
		if ($entity->getPrimaryId() === null)
		{
			return true;
		}
		if ($entity->isChanged())
		{
			return true;
		}
		if ($entity->isDeleted())
		{
			return true;
		}
	}

	return false;
}