Writing a custom validation:
source : http://web-union.de/421
typo3conf/ext/YOUR_EXT/Classes/Validation/Validator/PhoneNumberValidator.php
class Tx_ContactForm_Validation_Validator_PhoneNumberValidator extends Tx_Extbase_Validation_Validator_AbstractValidator
{
public function isValid($value)
{
$this->errors = array();
if(preg_match('#([^0-9\-\+\(\)\s])#', $value))
{
$this->addError('The given subject is no valid value.', 40213131);
return false;
}
return true;
}
}
* @validate Tx_ContactForm_Validation_Validator_PhoneNumberValidator