public function getDropzoneProgressByUser($dropzone, $user)
    {
        $drop = $this->em
            ->getRepository('IcapDropzoneBundle:Drop')
            ->findOneBy(['dropzone' => $dropzone, 'user' => $user]);
        $nbCorrections = $this->em
            ->getRepository('IcapDropzoneBundle:Correction')
            ->countFinished($dropzone, $user);

        return $this->getDrozponeProgress($dropzone, $drop, $nbCorrections);
    }