Rails - Feb 2007 - Using calendar helper to jump to other months

Hello,

I have the following in my controller to display a calendar using
calendar helper:

    if not request.post?
      @year = Time.now.year
      @month = Time.now.month
    else
      @year = Date.new(params[:date][:year], Time.now.month.to_s,
Time.now.mday.to_s).year    # this is line 154
      @month = Date.new(Time.now.year.to_s,params[:date][:month],
Time.now.mday.to_s).month
    end


This is what I have in the corresponding view:

<h1>Ship Calendar</h1>


<%= start_form_tag %>
<%= select_month(Date.today)%>
<%= select_year(Date.today)%>
<%= submit_tag ''Go'' %>
<%= end_form_tag %>

<%calendar({:year => @year, :month => @month}) do |d|
  cell_text = "#{d.mday}<br />"
  cell_attrs = {:class => ''day''}

  @sales_orders.each do |o|
    if o.ship_date.month == d.month
        if o.ship_date.mday == d.mday

          cell_text << link_to( o.id.to_s, :controller =>
''sales_orders'', :action => ''show'', :id
=> o ) << "<br />"
          cell_attrs[:class] = ''specialDay''
        end
    end
  end
  [cell_text, cell_attrs]
end
%>


I can view the calendar initially, since it defaults to the current
month.  But when I change the select box''s month and submit it, I get
the following error:

comparison of String with 0 failed
#{RAILS_ROOT}/app/controllers/histories_controller.rb:154:in
`history_calendar''

What am I doing wrong?  I''m just trying to be able to switch to
different months for the calendar.

Thanks,

Jason

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