add class to subset of symfony checkboxes - css

Question

I've made a form in Symfony that is not bound to an entity. One of the form elements is a set of checkboxes, fieldtypes. Which fieldtype checkboxes show should depend on the value of the searchby field. I want to add a class to each checkbox to use as a show/hide hook for the javascript I will add later. But so far as I can see, the choices form element only allows for an overall class to be applied.
Here's the relevant bit of my form:
$form = $this->createFormBuilder()
->add('searchby', 'choice', array(
'label' => 'browse.label.searchby',
'choices'=>array(
'name' => 'browse.searchby.name',
'location' => 'browse.searchby.location',
'classification' => 'browse.searchby.classification'
),
'required' => true,
'multiple' => false,
'expanded' => true,
))
->add('fieldtypes', 'choice', array(
'label' => 'browse.label.fieldtypes',
'choices' => array(
'extensionAttribute12' => 'person.label.position.fr',
'title' => 'person.label.position.eng',
'l' => 'person.label.city',
'st' => 'person.label.province',
'co' => 'person.label.country',
'givenname' => 'person.label.firstname',
'sn' => 'person.label.lastname',
'name' => 'person.label.fullname',
),
'required' => true,
'multiple' => true,
'expanded' => true
));
If I want to add the class 'searchbyname' to the radiobuttons created from $options['choices']['givenname'], $options['choices']['sn'], $options['choices']['name'], how would I go about it?

Answer 1

After seeing that choices could be declared like this:
'choices' => array(
'classification' => array(
'extensionAttribute12' => 'person.label.position.fr',
'title' => 'person.label.position.eng',
),
'location' => array(
'l' => 'person.label.city',
'st' => 'person.label.province',
'co' => 'person.label.country',
),
'name' => array(
'givenname' => 'person.label.firstname',
'sn' => 'person.label.lastname',
'name' => 'person.label.fullname',
)
),
where the key to each sub array would be used as an <optgroup> label in a <select>; and after attempting to modify the Twig template (which was every bit a painful as #Cerad said it would be), I tried extending the ChoiceType class by creating a form type extension.
My solution is inefficient since I'm modifying the child views after they are created and because I had to include all the code from ChoiceType::finishView. I can't see how a child view is created. There is a line in ChoiceType::buildForm that reads $remainingViews = $options['choice_list']->getRemainingViews();, but since $options['choices'] was input as an array, I don't know what class getRemainingViews() is being called from.
At any rate, here it is:
<?php
namespace Expertise\DefaultBundle\Form\Extension;
use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\PropertyAccess\PropertyAccess;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
class ChoiceTypeExtension extends AbstractTypeExtension
{
/**
* #return string The name of the type being extended
*/
public function getExtendedType()
{
return 'choice';
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setOptional(array('optgroup_as_class'));
$resolver->setDefaults(array('optgroup_as_class'=>false));
}
public function finishView(FormView $view, FormInterface $form, array $options)
{
if ($options['expanded']) {
// Radio buttons should have the same name as the parent
$childName = $view->vars['full_name'];
// Checkboxes should append "[]" to allow multiple selection
if ($options['multiple']) {
$childName .= '[]';
}
foreach ($view as $childView) {
$childView->vars['full_name'] = $childName;
if($options['optgroup_as_class']){
foreach($options['choices'] as $optclass => $choices){
if(!is_array($choices)) continue;
foreach($choices as $value => $label){
if($childView->vars['value'] == $value && $childView->vars['label'] == $label) {
$childView->vars['attr']['class'] = $optclass;
break 2;
}
}
}
}
}
}
}
}
Add it as a service, use the "optgroup" choices format and set optgroup_as_class to true.
I'd love to see a more efficient method.