I use render in a view page like this:
<% form_for :project do |form| %>
<table>
<tr>
<td>
<%=
select_tag:project_selection,options_for_select(@project_names)
%>
<%=
observe_field :project_selection,
:frequency => 0.5,
:update => 'project_version_ajax',
:url => {:action => 'update_project_selection'} %>
</td>
</tr>
<div id='project_version_ajax'>
<%= render :partial=>'project_version' %>
</div>
</table>
<% end %>
In update_project_selection controller:
def update_project_selection
...
render :partial=>'project_version'
end
when the select box changed its value, the controller is invoked but the
_project_version.html.erb doesn't update.
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