Adding the possibility to pass a class to options in Zend_View_Helper_FormSelect

When dynamically creating a select in a form, it can be useful to set a specific class on each option tag you create. A typical use case would be to be able to restrict the options available through javascript according to this class.

The list of classes to use for each element would be passed through attribs in the form of an array associating the value of the option to the desired class. That would look something like this :

foreach ($locations as $location) {
    $form->location_id->addMultiOption($location->id, $location->name);

    $optionClasses = $form->location_id->getAttrib('optionClasses');
    $optionClasses = (!$optionClasses) ? array() : $optionClasses;
    $optionClasses[$location->id] = 'dept_' . $location->department->code . ' postCode_' . $location->postCode;

    $form->location_id->setAttrib('optionClasses', $optionClasses);
}