Wixel/GUMP — Issue #4: Special characters (accents) not managed in alpha & alpha_numeric validators
Author: ben-s
Created: 2012-01-17 09:34:00+00:00
State: open

Hi,
I'm using your great class for a subscription form on my website.
Everything is working well, but I'm designing french websites and I need to accept accentuated characters for alpha and alpha_numeric validators.

Here are my own versions of the default gump validators :

/**
* Determine if the provided value contains only alpha characters
*
* @static
* @access protected
* @param string $field
* @param array $input
* @return mixed
*/
protected static function validate_alpha($field, $input, $param = NULL)
{
if(!isset($input[$field]))
{
return;
}

if(!preg_match("/^([a-zÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðòóôõöùúûüýÿ])+$/i", $input[$field]) !== FALSE)
{
return array(
'field' => $field,
'value' => $input[$field],
'rule'	=> __FUNCTION__
);
}
}

/**
* Determine if the provided value contains only alpha-numeric characters
*
* @static
* @access protected
* @param string $field
* @param array $input
* @return mixed
*/
protected static function validate_alpha_numeric($field, $input, $param = NULL)
{
if(!isset($input[$field]))
{
return;
}

if(!preg_match("/^([a-z0-9ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðòóôõöùúûüýÿ])+$/i", $input[$field]) !== FALSE)
{
return array(
'field' => $field,
'value' => $input[$field],
'rule'	=> __FUNCTION__
);
}
}

/**
* Determine if the provided value contains only alpha characters with dashed and underscores
*
* @static
* @access protected
* @param string $field
* @param array $input
* @return mixed
*/
protected static function validate_alpha_dash($field, $input, $param = NULL)
{
if(!isset($input[$field]))
{
return;
}

if(!preg_match("/^([-a-z0-9ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðòóôõöùúûüýÿ_-])+$/i", $input[$field]) !== FALSE)
{
return array(
'field' => $field,
'value' => $input[$field],
'rule'	=> __FUNCTION__
);
}
}

In short, I have just added in the regular expressions the following string : "ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïñðòóôõöùúûüýÿ"

The affected methods are : validate_alpha, validate_alpha_numeric and validate_alpha_dash.

Note that this change would be useful for Spanish website as well or some other euroopean languages.

Regards,

Ben.