johnkary · November 30, 2012 16:09 · Nov 30, 2012 · Nov 30, 2012
diff --git a/UserType.php b/UserType.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Acme\StudentBundle\Form;
+namespace Acme\UserBundle\Form;
 
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;

diff --git a/ReadOnlyFieldSubscriber.php b/ReadOnlyFieldSubscriber.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace Acme\UserBundle\Listener;
+
+use Symfony\Component\Form\FormEvent;
+use Symfony\Component\Form\FormEvents;
+use Symfony\Component\Form\FormFactoryInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Configures fields that are read-only to the user completing the form
+ * and unchangeable.
+ *
+ * @author johnkary
+ */
+class ReadOnlyFieldSubscriber implements EventSubscriberInterface
+{
+    private $factory;
+
+    public function __construct(FormFactoryInterface $factory)
+    {
+        $this->factory = $factory;
+    }
+
+    public static function getSubscribedEvents()
+    {
+        return array(
+            FormEvents::PRE_SET_DATA => 'preSetData',
+            FormEvents::POST_BIND => 'postBind',
+        );
+    }
+
+    public function preSetData(FormEvent $event)
+    {
+        $user = $event->getData();
+        $form = $event->getForm();
+
+        // During form creation setData() is called with null as an argument
+        // by the FormBuilder constructor. You're only concerned with when
+        // setData is called with an actual Entity object in it (whether new
+        // or fetched with Doctrine). This if statement lets you skip right
+        // over the null condition.
+        if (null === $user) {
+            return;
+        }
+
+        $form->add($this->factory->createNamed('phoneNumber', 'text', $user->getPhoneNumber(), array(
+            'mapped' => false,
+            'read_only' => true,
+        )));
+    }
+
+    public function postBind(FormEvent $event)
+    {
+        $user = $event->getData();
+        // The User's phoneNumber property is the same even if you modified it via the browser
+        var_dump($user->getPhoneNumber());exit;
+    }
+}
diff --git a/UserType.php b/UserType.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace Acme\StudentBundle\Form;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolverInterface;
+use Doctrine\Common\Persistence\ObjectManager;
+
+use Acme\UserBundle\Entity\User;
+use Acme\UserBundle\Listener\ReadOnlyFieldSubscriber;
+
+class UserType extends AbstractType
+{
+    /**
+     * EntityManager that handles persisting User entities
+     * @var ObjectManager
+     */
+    private $em;
+
+    public function __construct(ObjectManager $em)
+    {
+        $this->em = $em;
+    }
+
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+        $subscriber = new ReadOnlyFieldSubscriber($builder->getFormFactory());
+        $builder->addEventSubscriber($subscriber);
+
+        $builder
+            ->add('addressStreet')
+            ->add('addressCity')
+            ->add('addressState', 'choice', array(
+                'required' => false,
+                'empty_value' => '',
+                'choices' => array('CA' => 'California', 'CO' => 'Colorado'),
+            ))
+            ->add('addressZip')
+        ;
+    }
+
+    public function setDefaultOptions(OptionsResolverInterface $resolver)
+    {
+        $resolver->setDefaults(array(
+            'data_class' => 'Acme\UserBundle\Entity\User'
+        ));
+    }
+
+    public function getName()
+    {
+        return 'acme_userbundle_usertype';
+    }
+}
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