<%= popup_calendar 'project', 'start',
{ :class => 'date',
:field_title => 'start',
:button_image => 'calendar.gif',
:button_title => 'Show calendar' },
{ :firstDay => 1,
:range => [2007, 2009],
:step => 1,
:showOthers => true,
:cache => true }
%>
If you are using Active Scaffold, it is actually pretty easy as
follows:-
1) In your layout rhtml files,
<%= javascript_include_tag :defaults %>
<%= active_scaffold_includes %>
<%= stylesheet_link_tag 'active_scaffold_overrides'%>
<%= dhtml_calendar_includes %>
2) in your controller
config.columns[:date_column].form_ui = :calendar
HTH
CCH
http://cch4rails.blogspot.com