set doctrine type "date interval" using native postgresql date interval

DependencyInjection/ChillMainExtension.php

@@ -141,6 +141,15 @@ class ChillMainExtension extends Extension implements PrependExtensionInterface,
            )
         ));
         
+        //add dbal types (default entity_manager)
+        $container->prependExtensionConfig('doctrine', array(
+           'dbal' => [
+               'types' => [
+                   'dateinterval' => \Chill\MainBundle\Doctrine\Type\NativeDateIntervalType::class
+               ]
+           ]
+        ));
+        
         //add current route to chill main
         $container->prependExtensionConfig('chill_main', array(
            'routing' => array(