adapt select moderator field in new event form

Controller/EventController.php

@@ -1,5 +1,25 @@
 <?php
 
+/*
+ * Chill is a software for social workers
+ *
+ * Copyright (C) 2014-2015, Champs Libres Cooperative SCRLFS,
+ * <http://www.champs-libres.coop>, <info@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 namespace Chill\EventBundle\Controller;
 
 use Chill\EventBundle\Entity\Participation;
@@ -105,7 +125,9 @@ class EventController extends Controller
     {
         $form = $this->createForm(EventType::class, $entity, array(
             'action' => $this->generateUrl('chill_event__event_create'),
-            'method' => 'POST'
+            'method' => 'POST',
+            'center' => $entity->getCenter(),
+            'role'   => new Role('CHILL_EVENT_CREATE')
         ));
 
         $form->add('submit', SubmitType::class, array('label' => 'Create'));

Form/EventType.php

@@ -1,21 +1,42 @@
 <?php
 
+/*
+ * Chill is a software for social workers
+ *
+ * Copyright (C) 2014-2015, Champs Libres Cooperative SCRLFS,
+ * <http://www.champs-libres.coop>, <info@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 namespace Chill\EventBundle\Form;
 
-use Chill\MainBundle\Form\Type\ChillDateTimeType;
-use Symfony\Component\Form\AbstractType;
-use Symfony\Component\Form\FormBuilderInterface;
-use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 use Chill\EventBundle\Form\Type\PickEventType;
-use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Chill\MainBundle\Security\Authorization\AuthorizationHelper;
-use Doctrine\Common\Persistence\ObjectManager;
 use Chill\MainBundle\Templating\TranslatableStringHelper;
 use Chill\MainBundle\Entity\User;
-use Symfony\Bridge\Doctrine\Form\Type\EntityType;
 use Chill\MainBundle\Entity\Center;
 use Chill\MainBundle\Entity\Scope;
-
+use Chill\MainBundle\Form\Type\ChillDateTimeType;
+use Chill\MainBundle\Form\Type\UserPickerType;
+use Chill\MainBundle\Security\Authorization\AuthorizationHelper;
+use Doctrine\Common\Persistence\ObjectManager;
+use Doctrine\ORM\EntityRepository;
+use Symfony\Bridge\Doctrine\Form\Type\EntityType;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
 use Symfony\Component\Security\Core\Role\Role;
 
 class EventType extends AbstractType
@@ -76,6 +97,7 @@ class EventType extends AbstractType
                 'class' => Center::class,
                 'choices' => $userReachableCenters,
                 'attr' => array('class' => 'select2 chill-category-link-parent'),
+                'disabled' => true,
                 'choice_attr' => function (Center $center) {
                     return array(
                         'class' => ' chill-category-link-parent',
@@ -103,22 +125,26 @@ class EventType extends AbstractType
                 },
             ))
             ->add('type', PickEventType::class)
-            ->add('moderator', EntityType::class, array(
+            ->add('moderator', UserPickerType::class, array(
-                'class' => User::class,
+                'center' => $options['center'],
-                'required' => false,
+                'role'   => $options['role']
-                'placeholder' => ''
             ))
         ;
     }
     
     /**
-     * @param OptionsResolverInterface $resolver
+     * @param OptionsResolver $resolver
      */
-    public function setDefaultOptions(OptionsResolverInterface $resolver)
+    public function configureOptions(OptionsResolver $resolver)
     {
         $resolver->setDefaults(array(
             'data_class' => 'Chill\EventBundle\Entity\Event'
         ));
+        $resolver
+            ->setRequired(array('center', 'role'))
+            ->setAllowedTypes('center', Center::class)
+            ->setAllowedTypes('role', Role::class)
+        ;
     }
 
     /**