ZF-4915: multiCheckbox (_getErrorMessages()) fails if configuring custom validation message

Issue Type: Bug Created: 2008-11-11T14:57:06.000+0000 Last Updated: 2009-10-16T02:49:27.000+0000 Status: Resolved Fix version(s): - 1.9.5 (27/Oct/09)

Reporter: Howard Mundy (hmundy) Assignee: Matthew Weier O'Phinney (matthew) Tags: - Zend_Form

Related issues: - ZF-5603

Attachments: - Element.patch


If user checks no options for a multiCheckbox element and a custom validation message is configured, the _getErrorMessages() function generates a warning and fails to return the custom message. The line that fails is " foreach ($value as $val)" because $value is set to null.

Made the following change to get around the problem: if (($this->isArray() || is_array($value)) && !empty($value)) {

protected function _getErrorMessages()
    $translator = $this->getTranslator();
    $messages   = $this->getErrorMessages();
    $value      = $this->getValue();

    foreach ($messages as $key => $message) {
        if (null !== $translator) {
            $message = $translator->translate($message);
        if (($this->isArray() || is_array($value)) && !empty($value)) {
            $aggregateMessages = array();
            foreach ($value as $val) {
                $aggregateMessages[] = str_replace('%value%', $val, $message);
            $messages[$key] = $aggregateMessages;
        } else {
            $messages[$key] = str_replace('%value%', $value, $message);
    return $messages;


Posted by Neal Stammers (shovels) on 2009-03-20T05:23:19.000+0000

I have also ran into this issue when trying to implement a custom error message. Are there any plans to fix this issue, or am I assigning the error message in an incorrect way?

$element = $this->createElement('MultiCheckbox', 'checkbox'); $element->addErrorMessage('Foo');

Posted by Nils Caspar (pencil) on 2009-08-01T05:04:55.000+0000

Here is a patch for Zend/Form/Element.php

Posted by Nils Caspar (pencil) on 2009-08-01T05:05:51.000+0000

Pleas fix this ASAP

Posted by Thomas Hamacher (thamacher) on 2009-08-20T06:28:40.000+0000

The suggested patch from Nils is broken. As far as i can see the logic should be the same as in the Element::getValue() method. I've added a proper patch.

As a workaround you can derive the MultiCheckbox and implement the _getErrorMessages() method on your own, until the error is fixed.

Posted by Nicholas Calugar (njcalugar) on 2009-08-27T10:02:20.000+0000

Here is a code snippet that shows a very similar issue that occurs when adding a custom error message to a multi select. In this case, _getErrorMessages returns an array with an extra dimension, which causes a Warning when the FormErrors View Helper tries to escape each error message:

addMultiOptions( array( 1 => 'One', 2 => 'Two', 3 => 'Three', ) ); $control->isValid(array(1,4)); echo $control->render(new Zend\_View()); echo "\\n\\nPRINTING BUG ELEMENT:\\n\\n"; $bug = new Zend\_Form\_Element\_Multiselect('bug'); $bug->addMultiOptions( array( 1 => 'One', 2 => 'Two', 3 => 'Three', ) ); $bug->addErrorMessage('%value% is invalid'); $bug->isValid(array(1,4)); echo $bug->render(new Zend\_View()); Posted by Nils Caspar (pencil) on 2009-10-08T04:36:27.000+0000 Any news on this? Posted by Matthew Weier O'Phinney (matthew) on 2009-10-15T12:54:07.000+0000 The report and diagnosis are both incorrect. What happens is that the FormErrors view helper fails because the value passed to escape() is an array, not a string. What needs to be done is to flatten the errors within \_getErrorMessages() so that we don't get multiple error messsages per validator. Posted by Matthew Weier O'Phinney (matthew) on 2009-10-15T13:11:30.000+0000 Resolved in trunk and 1.9 release branch. See r18554 for details on how it was accomplished. Posted by Nils Caspar (pencil) on 2009-10-16T02:49:27.000+0000 Thank you! :-)

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