Focus on PHP » Archive » Creating a custom form validator using Zend

Creating a custom form validator using Zend_Validate

September 18th, 2008php, zend framework Mauricio Cuenca

Zend_Validate_Interface allows to create any type of validator, though a Zend_Validate_Regex exists, I created my own URL validator using a regular expression just for the sake of this example.

You can see the custom validator in action in this post.

This is the code:

class My_Validate_Url extends Zend_Validate_Abstract
{
    /**
     * Validation failure message key for when the value is an empty string
     */
    const STRING_EMPTY = 'stringEmpty';
    const NOT_MATCH    = 'urlNotMatch';

    /**
     * @var array
     */
    protected $_messageTemplates = array(
        self::NOT_MATCH    => "'%value%' does not match an url",
        self::STRING_EMPTY => "'%value% is an empty string"
    );

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

        $this->_setValue($valueString);

        if ('' === $valueString) {
            $this->_error(self::STRING_EMPTY);
            return false;
        } elseif (!preg_match('#https?://([-\w\.])+(:\d+)?(/([\w/_\.]*(\?\S+)?)?)?#', $valueString)) {
            $this->_error(self::NOT_MATCH);
            return false;
        }

        return true;
    }
}

Creating a custom form validator using Zend_Validate

Archives

Blogroll

Meta