Support for Multiple Select Fields

Posted by kvvnn on August 19, 2009 at 4:39am

Project:	Validation API
Version:	6.x-1.0-rc5
Component:	Code
Category:	support request
Priority:	normal
Assigned:	Unassigned
Status:	active

Issue Summary

I was having incredible difficulty getting a Validator to work with a Date module field . Apparently, the reason is because the current validator.module does not grab multiple values from a single form element (it does not treat the form element as an array).

This was easily fixed by adding a single line to the code around line 519 of validation_api.module ( $arrayvalue = $element['#value']; ) and then referencing this $arrayvalue instead of the documented $value in my Validator:

function _validation_api_run_validator($element, &$form_state, $validation_api_field, $validator) {
  // Set the value depending on it's location
  $value = (is_array($element['#value']) ? $element['#value']['value'] : $element['#value']);
  $arrayvalue = $element['#value'];  // custom code to allow referencing array values from the form field

My field was named field_birthday[0]. I added a Field under Validation API and created a Validator for it.

My Validator grabbed the year / month / day fields like so :

$dob_year = intval($arrayvalue['value'][year]);
$dob_month = intval($arrayvalue['value'][month]);
$dob_day = intval($arrayvalue['value'][day]);

Below is my entire code, which validates a user's birth day and makes sure they are over 13 years old

$now = time();

$dob_year = intval($arrayvalue['value'][year]);
$dob_month = intval($arrayvalue['value'][month]);
$dob_day = intval($arrayvalue['value'][day]);

$year = intval(date('Y', $now));
$month = intval(date('m', $now));
$day = intval(date('d', $now));

# if the dob is more than 13 years before today's year, then return true
if (($year - $dob_year) > 13)  {
 return true;
}

# if the dob is 13 years before today's year, and this month is the dob month or earlier, and this day is the dob day or earlier, return true
if ( (($year - $dob_year) == 13) && (($month - $dob_month) >= 0) && (($day - $dob_day) >= 0) ) {
 return true;
}

else
 return false;

Credits to Igashu_ on #drupal-support , irc.freenode.net , for this solution