TYPO3 Flow – Unique & Exists Validators

ExistsValidator.php

<?php
namespace My\Package\Validation;

use TYPO3\Flow\Persistence\RepositoryInterface;

class ExistsValidator extends \TYPO3\Flow\Validation\Validator\AbstractValidator {

  /**
	 * @var array
	 */
	protected $supportedOptions = array(
		'repository' => array(NULL, 'Repository to look for the unique property', 'string', TRUE),
		'propertyName' => array(NULL, 'name of the unique property', 'string', TRUE),
	);

	/**
	 * @param mixed $value The value that should be validated
	 * @return void
	 * @throws \TYPO3\Flow\Validation\Exception\InvalidValidationOptionsException
	 */
	protected function isValid($value) {
		$repository = new $this->options['repository']();
		if (!$repository instanceof RepositoryInterface) {
			throw new \TYPO3\Flow\Validation\Exception\InvalidValidationOptionsException('The option "repository" must refer to a class implementing RepositoryInterface.', 1336499435);
		}
		$propertyName = (string)$this->options['propertyName'];
		$query = $repository->createQuery();
		$numberOfResults = $query->matching($query->equals($propertyName, $value))->count();
		if ($numberOfResults === 0) {
			$this->addError('This %s was not found', 1340810986, array($propertyName));
		}
	}
}

?>

UniqueValidator.php

<?php
namespace My\Package\Validation;

use TYPO3\Flow\Persistence\RepositoryInterface;

class UniqueValidator extends \TYPO3\Flow\Validation\Validator\AbstractValidator {

  /**
	 * @var array
	 */
	protected $supportedOptions = array(
		'repository' => array(NULL, 'Repository to look for the unique property', 'string', TRUE),
		'propertyName' => array(NULL, 'name of the unique property', 'string', TRUE),
		'alwaysAllow' => array(NULL, 'if the unique property is equal to this option, the validator is disabled', 'mixed'),
	);

	/**
	 * @param mixed $value The value that should be validated
	 * @return void
	 * @throws \TYPO3\Flow\Validation\Exception\InvalidValidationOptionsException
	 */
	protected function isValid($value) {
		$repository = new $this->options['repository']();
		if (!$repository instanceof RepositoryInterface) {
			throw new \TYPO3\Flow\Validation\Exception\InvalidValidationOptionsException('The option "repository" must refer to a class implementing RepositoryInterface.', 1336499435);
		}
		if (isset($this->options['alwaysAllow']) && $value === $this->options['alwaysAllow']) {
			return;
		}
		$propertyName = (string)$this->options['propertyName'];
		$query = $repository->createQuery();
		$numberOfResults = $query->matching($query->equals($propertyName, $value))->count();
		if ($numberOfResults > 0) {
			$this->addError('This %s is already taken', 1336499565, array($propertyName));
		}
	}
}

?>