TemplateFieldHandler::prepareResponsible

public function prepareResponsible(): self
{
	if (
		$this->templateId
		&& !array_key_exists('RESPONSIBLES', $this->fields)
		&& !array_key_exists('RESPONSIBLE_ID', $this->fields)
	)
	{
		return $this;
	}

	if (
		!array_key_exists('RESPONSIBLES', $this->fields)
		&& !array_key_exists('RESPONSIBLE_ID', $this->fields)
	)
	{
		throw new TemplateFieldValidateException(Loc::getMessage("TASKS_BAD_RESPONSIBLE_ID"));
	}

	if (!array_key_exists('RESPONSIBLE_ID', $this->fields))
	{
		$this->fields['RESPONSIBLE_ID'] = (int) array_values($this->fields['RESPONSIBLES'])[0];
	}

	if (
		array_key_exists('RESPONSIBLES', $this->fields)
		&& is_string($this->fields['RESPONSIBLES'])
	)
	{
		$this->fields['RESPONSIBLES'] = unserialize($this->fields['RESPONSIBLES'], ['allowed_classes' => false]);
	}

	if (
		(
			!$this->templateId
			&& (int)($this->fields['TPARAM_TYPE'] ?? null) !== CTaskTemplates::TYPE_FOR_NEW_USER
		)
		||
		(
			$this->templateId
			&& (int) $this->templateData['TPARAM_TYPE'] !== CTaskTemplates::TYPE_FOR_NEW_USER
		)
	)
	{
		if(isset($this->fields["RESPONSIBLE_ID"]))
		{

			$r = CUser::GetByID($this->fields["RESPONSIBLE_ID"]);
			if (!$r->Fetch())
			{
				throw new TemplateFieldValidateException(Loc::getMessage("TASKS_BAD_RESPONSIBLE_ID_EX"));
			}
		}
		else
		{
			if(!$this->templateId)
			{
				throw new TemplateFieldValidateException(Loc::getMessage("TASKS_BAD_RESPONSIBLE_ID"));
			}
		}
	}

	if (
		!$this->templateId
		&& empty($this->fields['RESPONSIBLES'])
	)
	{
		$this->fields['RESPONSIBLES'] = [$this->fields['RESPONSIBLE_ID']];
	}
	elseif (
		empty($this->fields['RESPONSIBLES'])
		&& empty($this->templateData['RESPONSIBLES'])
	)
	{
		$this->fields['RESPONSIBLES'] = [$this->fields['RESPONSIBLE_ID']];
	}

	return $this;
}