Zend Framework: How to add a custom validation rule in Zend Form?

Question

Hi

I have a created a zend form, works fine along with validations.

Is there anyway I can add a custom validation within this form for the email address, for example I want to set a validation to check if the email address supplied by the user is hotmail, as I want to accept only hotmail email addresses.

<?php
class Application_Form_RegistrationForm extends Zend_Form{

    public function init(){

        $firstname = $this->createElement('text', 'firstname');
        $firstname->setLabel('Firstname: ')
                ->setRequired(true);

        $lastname = $this->createElement('text', 'lastname');
        $lastname->setLabel('Lastname: ')
                ->setRequired(true);

        $email = $this->createElement('text', 'email_address');
        $email->setLabel('Email Address: ')
                ->setRequired(true);

        $register = $this->createElement('submit', 'register');
        $register->setLabel('Create new Account')
                ->setIgnore(true);

        $this->addElements(array(
            $firstname, $lastname, $email, $register
        ));




    }

}

?>

Any help will be appreciated.

Answer 1

class Mylib_Validate_UniqueEmail extends Zend_Validate_Abstract

{

const NOT_HOTMAIL = 'notHotmail';


protected $_messageTemplates = array(
    self::NOT_HOTMAIL => "'%value%' is not a hotmail email address."
);

public function isValid($value)
{
    $valueString = (string) $value;

    $this->_setValue($valueString);

    $email = explode('@',$value);

    if (!substr_count($email[1],'hotmail') ) {
        $this->_error(self:NOT_HOTMAIL);
        return false;
    }

    return true;
}

}

This will be the validate class that will be needed to be added in the form.