Rails and observe_form

In using the method observe_form in Rails, your form should be created with the option :id.  Otherwise, the observe_form won’t be able to locate the form and javascript error is encountered in prototype.js.

Sample code snippet in the rhtml:

<% form_tag(‘javascript:void(0)’, :id => ‘my_form’) do %>
…

<% end %>

<%=  observe_form :my_form,
: url  => {:action => ‘new’} %>