Merge pull request #9 from xurumelous/master

Added the ability to attach event subscribers to a form.

Author: Harrison Heck

DependencyInjection/CompilerPass.php

@@ -15,7 +15,7 @@ public function process(ContainerBuilder $container)
     {
         $this->loadFormlyFields($container);
         $this->loadDataProviders($container);
-
+        $this->loadSubscribers($container);
     }
 
     /**
@@ -51,4 +51,19 @@ public function loadDataProviders(ContainerBuilder $container)
             }
         }
     }
+
+    /**
+     * @param ContainerBuilder $container
+     */
+    public function loadSubscribers(ContainerBuilder $container)
+    {
+        $containerDefinition = $container->getDefinition('dynamic_form.factory');
+        $taggedServices = $container->findTaggedServiceIds('dynamic_form.event_subscriber');
+
+        foreach ($taggedServices as $id => $tags) {
+            foreach ($tags as $attributes) {
+                $containerDefinition->addMethodCall('addEventSubscriber', [$attributes['form_name'], new Reference($id)]);
+            }
+        }
+    }
 }

Form/FormFactory.php

@@ -4,6 +4,8 @@
 
 use Linio\DynamicFormBundle\DataProvider;
 use Linio\DynamicFormBundle\Exception\NonExistentFormException;
+use Linio\DynamicFormBundle\Exception\NotExistentDataProviderException;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\Form\FormFactory as SymfonyFormFactory;
 use Symfony\Component\Form\FormInterface;
@@ -25,6 +27,11 @@ class FormFactory
      */
     protected $dataProviders = [];
 
+    /**
+     * @var array
+     */
+    protected $eventSubscribers = [];
+
     /**
      * @param SymfonyFormFactory $formFactory
      */
@@ -50,6 +57,19 @@ public function addDataProvider($alias, DataProvider $dataProvider)
         $this->dataProviders[$alias] = $dataProvider;
     }
 
+    /**
+     * @param string                   $formName
+     * @param EventSubscriberInterface $eventSubscriber
+     */
+    public function addEventSubscriber($formName, EventSubscriberInterface $eventSubscriber)
+    {
+        if (!isset($this->eventSubscribers[$formName])) {
+            $this->eventSubscribers[$formName] = [];
+        }
+
+        $this->eventSubscribers[$formName][] = $eventSubscriber;
+    }
+
     /**
      * @param string $key     The key of the Form in the form configuration
      * @param array  $data
@@ -83,6 +103,12 @@ public function createBuilder($key, $data = [], $options = [], $name = null)
 
         $formBuilder = $this->formFactory->createNamedBuilder($name ?: $key, 'form', $data, $options);
 
+        if (isset($this->eventSubscribers[$key])) {
+            foreach ($this->eventSubscribers[$key] as $eventSubscriber) {
+                $formBuilder->addEventSubscriber($eventSubscriber);
+            }
+        }
+
         foreach ($this->configuration[$key] as $key => $fieldConfiguration) {
             if (!$fieldConfiguration['enabled']) {
                 continue;
@@ -129,6 +155,8 @@ public function createBuilder($key, $data = [], $options = [], $name = null)
      * @param string $alias
      *
      * @return DataProvider
+     *
+     * @throws NotExistentDataProviderException
      */
     public function loadDataProvider($alias)
     {

composer.json

@@ -6,8 +6,8 @@
   "license": "BSD-3-Clause",
   "require": {
     "php": ">=5.4",
-    "symfony/framework-bundle": "~2.3",
-    "symfony/form": "~2.3"
+    "symfony/framework-bundle": ">=2.3",
+    "symfony/form": ">=2.3"
   },
   "require-dev": {
     "phpunit/phpunit": "4.6.*",