def destroy
    @viewing = Viewing.find(params[:id]).destroy
    if @viewing.destroy
      flash[:notice] = "Viewing: #{@viewing.start_time.strftime('%e %b %Y %H:%M%p')} to #{@viewing.end_time.strftime('%e %b %Y %H:%M%p')} deleted"
      redirect_to room_viewings_path(@room)