public function newAction(Request $request)
    {
        $slider = new Slider();
        $form = $this->createForm('CoreExtraBundle\Form\SliderType', $slider,  array('uploadDir'=> 'uploads/images/slider' ));
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            
            //clean image form
            $this->get('core_manager')->cleanImageForm($request->files->get('slider'), $slider);
            
            $em->persist($slider);
            $em->flush();
            
            $this->get('session')->getFlashBag()->add('success', 'slider.created');

            return $this->redirectToRoute('coreextra_slider_index');
        }

        return array(
            'entity' => $slider,
            'form' => $form->createView(),
        );
    }