  def edit_timecard
    Log.add_info(request, params.inspect)

    date_s = params[:date]

    if date_s.nil? or date_s.empty?
      @date = Date.today
      date_s = @date.strftime(Schedule::SYS_DATE_FORM)
    else
      @date = Date.parse(date_s)
    end

    @timecard = Timecard.get_for(@login_user.id, date_s)

    render(:partial => 'timecard', :layout => false)
  end
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.