Cannot both disable entity field and retain its value

Question

In a form event, setting a field \'attr\' => array(\'readonly\' => \'readonly\') is rendered as \"disabled\" = \"1\". This is not the desired ef

Answer 1

The eventual solution: a service using Doctrine metadata to get disabled entity fields, form class modifications, and, for ManyToMany relationships, some jquery and invisible template entry.

Service functions:

/**
 * Create array of disabled fields of an entity object
 * 
 * @param type $object
 * @return array
 */
public function getDisabledOptions($object) {
    $values = [];
    $className = get_class($object);
    $metaData = $this->em->getClassMetadata($className);
    foreach ($metaData->associationMappings as $field => $mapping) {
        if (8 > $mapping['type']) {
            $fieldName = ucfirst($field);
            $method = 'get' . $fieldName;
            if (method_exists($object->$method(), 'getEnabled') && false === $object->$method()->getEnabled()) {
                $values[] = $fieldName;
            }
        }
    }
    $manyToMany = json_decode($this->getMetaData($object), true);
    foreach(array_keys($manyToMany) as $key) {
        $values[] = $key;
    }

    return $values;
}

/**
 * Get array of disabled ManyToMany options
 *
 * @param Object $object
 * @return array
 */
public function getMetaData($object) {
    $data = array();
    $className = get_class($object);
    $metaData = $this->em->getClassMetadata($className);
    foreach ($metaData->associationMappings as $field => $mapping) {
        if (8 === $mapping['type']) {
            $data[$field] = $this->extractOptions($object, $field);
        }
    }

    return json_encode($data);
}

Controller use of service:

    $searches = $this->get('mana.searches');
    $disabledOptions = $searches->getDisabledOptions($household);
    $metadata = $searches->getMetadata($household);
    ...
    $form = $this->createForm(HouseholdType::class, $household, $formOptions);
    ...
    return $this->render('Household/edit.html.twig',
            array(
            'form' => $form->createView(),
            ....
            'metadata' => $metadata,
    ));

Example of form class field:

        ->add('housing', EntityType::class,
            array(
            'class' => 'TruckeeProjectmanaBundle:Housing',
            'choice_label' => 'housing',
            'placeholder' => '',
            'attr' => (in_array('Housing', $options['disabledOptions']) ? ['disabled' => 'disabled'] : []),
            'label' => 'Housing: ',
            'query_builder' => function (EntityRepository $er) use ($options) {
            if (false === in_array('Housing', $options['disabledOptions'])) {
                return $er->createQueryBuilder('alias')
                    ->orderBy('alias.housing', 'ASC')
                    ->where('alias.enabled=1');
            } else {
                return $er->createQueryBuilder('alias')
                    ->orderBy('alias.housing', 'ASC');
            }
        },
        ))
        ...

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => 'Truckee\ProjectmanaBundle\Entity\Household',
        'required' => false,
        'disabledOptions' => [],
    ));
}

Jquery to remove disabled attribute:

$("input[type=Submit]").click(function () {
    $("input").removeAttr("disabled");
    $("select").removeAttr("disabled");
});

Example of template & jquery for ManyToMany relationship:

<div id="household_options" style="display:none;">{{ metadata }}</div>

jquery:

if (0 < $("#household_options").length) {
    var house_options = JSON.parse($("#household_options").text());
    $.each(house_options, function (index, item) {
        $.each(item, function (k, v) {
            var formAttr = 'household_' + index + '_' + v.id;
            $("#" + formAttr).attr('disabled', 'disabled');
        });
    });
}