function beforeSave ( ) {

    if ( !empty ( $this->data['SprayerPotentiel']['email'] ) ||
         !empty ( $this->data['SprayerPotentiel']['coupon_id'] ) ) {

      $sprayerPotentiel = $this->__hasAlreadyBeenBoughtBySameUser ( $this->data['SprayerPotentiel']['email'] ,
                                                   $this->data['SprayerPotentiel']['coupon_id']);
    debug ( $sprayerPotentiel ) ;

    if ( !empty ( $sprayerPotentiel ) ) {

       debug ( 'houhou');
      $this->data['SprayerPotentiel']['count'] = $sprayerPotentiel['count'] + 1 ;
      $this->id          = $sprayerPotentiel['id'] ;
      debug ( $this->id ) ;
    } else {

         $this->data['SprayerPotentiel']['count'] = 1 ;
    }



    debug ( $this->data ) ;



    }



  // die ;
    return true ;
  }