Add column option, definition in config & adapt form

Exemple for configuration :

```
chill_custom_fields:
    customizables_entities:
        -
            class: Chill\ReportBundle\Entity\Report
            name: ReportEntity
            options:
                summary_fields: {key: abc, form_type: text, form_options: { required: false }}
```

DependencyInjection/Configuration.php

@@ -22,6 +22,8 @@ class Configuration implements ConfigurationInterface
         
         $classInfo = "The class which may receive custom fields";
         $nameInfo = "The name which will appears in the user interface. May be translatable";
+        $optionsInfo = "Options available for custom fields groups referencing this class";
+        $prototypeTypeInfo = "The name of the form to append";
         $customizableEntitiesInfo = "A list of customizable entities";
 
         $rootNode
@@ -33,9 +35,24 @@ class Configuration implements ConfigurationInterface
                     ->children()
                         ->scalarNode('class')->isRequired()->info($classInfo)->end()
                         ->scalarNode('name') ->isRequired()->info($nameInfo) ->end()
+                        ->arrayNode('options')
+                                ->info($optionsInfo)
+                                ->defaultValue(array())
+                                ->useAttributeAsKey('key')
+                                ->prototype('array')
+                                    ->children()
+                                        ->scalarNode('form_type')
+                                            ->isRequired()
+                                            ->info($prototypeTypeInfo)
+                                            ->end()
+                                        ->variableNode('form_options')
+                                            ->defaultValue(array())
+                                            ->end()
+                                    ->end()
+                            ->end()
+                        ->end()
                     ->end()
                 ->end()
-            ->end()
         ;
 
         return $treeBuilder;

Entity/CustomFieldsGroup.php

@@ -46,6 +46,12 @@ class CustomFieldsGroup
      */
     private $customFields;
     
+    /**
+     *
+     * @var array
+     */
+    private $options = array();
+
         /**
      * Constructor
      */
@@ -162,4 +168,28 @@ class CustomFieldsGroup
         return $this->entity;
     }
     
+    /**
+     * get options array
+     * 
+     * @return array
+     */
+    public function getOptions()
+    {
+        return $this->options;
+    }
+
+    /**
+     * set options array
+     * 
+     * @param array $options
+     * @return \Chill\CustomFieldsBundle\Entity\CustomFieldsGroup
+     */
+    public function setOptions(array $options)
+    {
+        $this->options = $options;
+        return $this;
+    }
+
+
+
 }

Form/CustomFieldsGroupType.php

@@ -6,6 +6,8 @@ use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 use Symfony\Component\Translation\TranslatorInterface;
+use Symfony\Component\Form\FormEvents;
+use Symfony\Component\Form\FormEvent;
 
 
 class CustomFieldsGroupType extends AbstractType
@@ -32,18 +34,50 @@ class CustomFieldsGroupType extends AbstractType
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
         //prepare translation
-        $customizableEntites = array();
+        $entities = array();
+        $customizableEntities = array();
         
         foreach($this->customizableEntities as $key => $definition) {
-            $customizableEntites[$definition['class']] = $this->translator->trans($definition['name']);
+            $entities[$definition['class']] = $this->translator->trans($definition['name']);
+            $customizableEntities[$definition['class']] = $definition;
         }
         
         $builder
             ->add('name', 'translatable_string')
             ->add('entity', 'choice', array(
-                'choices' => $customizableEntites
+                'choices' => $entities
             ))
         ;
+
+        $builder->addEventListener(FormEvents::POST_SET_DATA, function(FormEvent $event) 
+                use ($customizableEntities, $builder){
+                    $form = $event->getForm();
+                    $group = $event->getData();
+                    
+                    if (count($customizableEntities[$group->getEntity()]['options']) > 0) {
+                        $optionBuilder = $builder
+                                ->getFormFactory()
+                                ->createBuilderForProperty(
+                                        'Chill\CustomFieldsBundle\Entity\CustomFieldsGroup', 
+                                        'options'
+                                        )
+                                ->create('options', null, array(
+                                        'compound' => true, 
+                                        'auto_initialize' => false,
+                                        'required' => false)
+                                    );
+                    }
+                    
+                    foreach($customizableEntities[$group->getEntity()]['options'] as $key => $option) {
+                                $optionBuilder
+                                    ->add($key, $option['form_type'], $option['form_options'])
+                            ;
+                    }
+                    if (isset($optionBuilder) && $optionBuilder->count() > 0) {
+                        $form->add($optionBuilder->getForm());
+                    }
+                    
+                });
     }
     
     /**

Resources/config/doctrine/CustomFieldsGroup.orm.yml

@@ -13,6 +13,8 @@ Chill\CustomFieldsBundle\Entity\CustomFieldsGroup:
         entity:
             type: string
             length: 255
+        options:
+            type: json_array
     oneToMany:
         customFields:
             orderBy: { 'ordering': 'ASC' }

Resources/migrations/Version20150224164531.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Application\Migrations;
+
+use Doctrine\DBAL\Migrations\AbstractMigration;
+use Doctrine\DBAL\Schema\Schema;
+
+/**
+ * Add an option column to customfieldsgroup
+ */
+class Version20150224164531 extends AbstractMigration
+{
+    public function up(Schema $schema)
+    {
+        $this->addSql('ALTER TABLE customfieldsgroup ADD options JSON DEFAULT \'{}\'::json');
+    }
+
+    public function down(Schema $schema)
+    {
+        $this->addSql('ALTER TABLE CustomFieldsGroup DROP options');
+    }
+}