[TYPO3-mvc] Validate form field depending on another passed objects property

[Jan Kornblum]

Hi Matthew,

> you have two options:
>
> Validate in the controller action:
>
> * @validate $objectName Validator
>
> E.g.
>
> * @validate $booking
> \NAMESPACE\Extname\Validation\Validator\BookingValidator
>
> or
>
> * @validate $stringVar String, StringLength(minimum=3,maximum=20)
>
>
> Or you can validate in the Controller method
> "initializeActionMethodValidators", this one of the "well documented"
> features of Extbase...
> ***************************************************
> protected function initializeActionMethodValidators() {
>   if ($this->actionMethodName == 'insertAction') {
>     parent::initializeActionMethodValidators();
>     $booking = $this->arguments['booking'];
>     $validator = $booking->getValidator();
>     $extTermsAndConditionsRequiredValidator =
>         \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
>
> 'NAMESPACE\Extname\Validation\Validator\Validator\ExtTermsAndConditionsRequiredValidator',
>           array('someOptionToBeHandedOverToTheValidator' =>
> $someOptionToBeHandedOverToTheValidator)
>         );
>       $validator->addValidator($enoughTicketsAvailableValidator);
>   }
> }
> ***************************************************
>
> And the validator class must be something like this:
> ***************************************************
> class ExtTermsAndConditionsRequiredValidator extends
> \TYPO3\CMS\Extbase\Validation\Validator\AbstractValidator {
>
>   /**
>    * Booking repository
>    *
>    * @var \NAMESPACE\Extname\Domain\Repository\BookingRepository
>    * @inject
>    */
>   protected $bookingRepository;
>
>   /**
>    * Event repository
>    *
>    * @var \NAMESPACE\Extname\Domain\Repository\EventRepository
>    * @inject
>    */
>   protected $eventRepository;
>
>
>   /**#
>    * This contains the supported options, their default values,
>    * descriptions and types.
>    *
>    * @var array
>    */
>   protected $supportedOptions = array(
>     'someOptionToBeHandedOverToTheValidator' =>
>       array(
>         5,
>         'The maximum amount of reservations',
>         'integer'),
>     'event' =>
>       array(
>         NULL,
>         'The event object',
>         '\NAMESPACE\Extname\Domain\Model\Event')
>   );
>
>     /**
>      *
>      *
>      * @param \NAMESPACE\Extname\Domain\Repository\Booking $booking
>      * @return boolean TRUE if the value is valid
>      * @api
>      */
>     public function isValid($booking) {
>       // Need your own validation checking here
>       if ($thisCrapDoesntValidate) {
>         $error = new \TYPO3\CMS\Extbase\Validation\Error('', time());
>         $this->result->forProperty(
>           'error_tag_free_to_define'
>         )->addError($error);
>         return FALSE;
>       }
>       return TRUE;
>     }
> }
> ***************************************************
> -- 
> Cheers,
> Matthew

great, thanks a lot!

Kind regards, Jan