Hi,
I used Active Select module to display a hierarchical data to enable select landmark detail ( Province > City > Sub City > District > Metro Station ) , I used taxonomy module ( with some database addition ) to store this hierarchical database structure.
Now on the form, I have a select fields for all those fields linked together with Active Select . My requirement was I need to display the landmark field where as it's value should be the id of the term. So I did the following on my callback function :

function venues_getLandmark($source='', $targets='', $string='', $extra = NULL)
	{
		  if (empty($source) || empty($targets) || empty($string)) {
		    exit();
		  }
		  
		  $targets = explode(',', $targets);
		  $output = array();
		  
		  //var_dump($string);
		  $array = activeselect_explode_values($string);
		  
		  foreach ($targets as $target) {
		    $options = array();
		    
		    $first_element = TRUE;
		    foreach ($array as $key => $value) {
		     
	$vocabulary = db_query("SELECT term_data.name, term_data.tid FROM {term_data},{term_hierarchy} WHERE term_data.tid=term_hierarchy.tid and term_hierarchy.parent=".$key." ORDER BY name");
	while ($term = db_fetch_object($vocabulary)) {
		      $options[$term->tid]['value'] = $term->name;
		      }
		    }
		    $multiple = FALSE;
		    $output[$target] = array('options' => $options, 'multiple' => $multiple);
		  }
		  activeselect_set_header_nocache();		  
		  print drupal_to_js($output);
		  exit();
	}

Now, After making the choice when I submit form , I get the error - " An illegal choice has been detected. Please contact the site administrator. " on all of those fields .

Can you please assists me.
Best Regards
Kaushal

Comments

exodusx’s picture

exodusx commented

In activeselect definition add '#DANGEROUS_SKIP_CHECK'=>true, to array
example:
$form['example'] = array(
'#type' => 'activeselect',
'#options' => $options,
'#title' => t('Example'),
'#DANGEROUS_SKIP_CHECK'=>true
);

chop’s picture

chop commented

Warning:


You should only use the #DANGEROUS_SKIP_CHECK Form API property if you're particularly evil. For more information on this, the most evil of Form API properties, see #DANGEROUS_SKIP_CHECK: the most evil of the Form API properties | groups.drupal.org.
nightlife2008’s picture

nightlife2008 commented

Hi people,

After upgrading to D6.13, I've been dealing with the same error on some client's websites. I've been able so solve it and wrote my solution down at: http://www.halecommunications.be/blog/?p=88

Hope I can be of any assistance! Please note that this solution has only been tested on Drupal 6 platforms...

greets,

Kim

DropInTheOcean’s picture

DropInTheOcean commented

Hi, I have a Drupal 7.2 site, with the 'Profile 2' module. This message ("An illegal choice has been detected. Please contact the site administrator") appears when the visitor does not fill out a radio button (rather than a message saying 'Radio Field required'. Thus the visitors are writing emails to say that they cannot register (because they do not understand the message). I am unsure how to solve this without altering into the code.

[Also unsure of whether to Edit 'issue settings' of this post, or re-post in Drupal 7 forum?]

rogical’s picture

rogical commented

same issue, urgently!

hablutzel1’s picture

hablutzel1 commented
Project: Active Select » Drupal core
Version: 5.x-1.x-dev » 7.x-dev
Component: Code » ajax system

Same problem here, please someone explane why does that message appear, I'm getting it with an ajax select input

nod_’s picture

nod_
Primary language French
Location Lille
commented
Category: bug » support

This doesn't look like it has anything to do in core.

pasqualle’s picture

pasqualle
Location 🇭🇺 Budapest
commented
Status: Active » Closed (fixed)

The message appears because the submitted value is not part of the original select list. Typical problem with dynamically created select list options.
The https://drupal.org/project/examples module has some good examples how to modify form elements dynamically.

sinasalek’s picture

sinasalek commented
Status: Closed (fixed) » Active

When #ajax is used for a select element, if more than one options is selected "illegal choice error" will be generated. But why?
After a bit of investigation it turned out that when #ajax is enabled it causes the select element to submit values like array(200,250) instead of array(200 => 200, 250 => 250)
So it causes problem with options validation code inside _form_validate function and it no longer can check selected options against available options, here is the code :
This happens only when more than one option is selected and #ajax is used. The fix is to correct the submitted value before validation

        if (is_array($elements['#value'])) {
          $value = in_array($elements['#type'], array('checkboxes', 'tableselect')) ? array_keys($elements['#value']) : $elements['#value'];
          foreach ($value as $v) {
            if (!isset($options[$v])) {
              form_error($elements, $t('An illegal choice has been detected. Please contact the site administrator.'));
              watchdog('form', 'Illegal choice %choice in !name element.', array('%choice' => $v, '!name' => empty($elements['#title']) ? $elements['#parents'][0] : $elements['#title']), WATCHDOG_ERROR);
            }
          }
        }
sinasalek’s picture

sinasalek commented
Category: Support request » Bug report

There seems to be no way to workaround this via a module. _format_validate is call very early in form validation :(

sinasalek’s picture

sinasalek commented

A workaround has been found using #after_build but it's ugly :)
It's possible to correct the submitted values using a custom after_build callback and before _form_validation is called

sinasalek’s picture

sinasalek commented

I wrote a module for this https://www.drupal.org/sandbox/sinasalek/2312751

pasqualle’s picture

pasqualle
Location 🇭🇺 Budapest
commented
Title: An illegal choice has been detected. Please contact the site administrator. » Wrong submit values for multiple select under ajax submit
john morahan’s picture

john morahan commented

Updating the jQuery form plugin (#2266303: Update jquery.form.js) also seems to fix it, at least for me.

jordanmagnuson’s picture

jordanmagnuson commented

Confirming that updating jquery.form.js to 3.51 as per #14 solved this issue for me.

Status: Active » Closed (outdated)

Automatically closed because Drupal 7 security and bugfix support has ended as of 5 January 2025. If the issue verifiably applies to later versions, please reopen with details and update the version.