AJAX in Ruby on Rails

I’m having some trouble getting AJAX working properly for me in Rails.
tried the example in “Agile Web D. with Rails” on page 391
form_remote_tag(), and instead of updating a

like it should, it
renders the form as an entirely new page. I’ve tried in on Windows XP
OS X 10.4, WEBrick and Apache, using IE and Firefox, and to no avail.

For those who don’t have the book, the problem is essentially:

I have a controller with:

def index

def blah
@stuff = ‘should print’
render :partial => ‘form’


Display me!

<%= render(:partial => 'form') %>

<% if @stuff %>

<%= @stuff %> <% end %>

<%= form_remote_tag(:update => “update_me”, :url => { :action => :blah }
blah blah blah
<%= end_form_tag %>

When you submit the form, the

Display me!

part doesn’t show
The render :partial => ‘form’ from the ‘blah’ action just renders the
and doesn’t update the “update_me”
section. The WEBrick output is
follows: - - [12/Dec/2005:10:43:28 Eastern Standard Time] “GET
HTTP/1.1” 200 851

  • -> /guesswhat - - [12/Dec/2005:10:43:28 Eastern Standard Time] “GET
HTTP/1.1” 200 0

  • -> /favicon.ico - - [12/Dec/2005:10:43:32 Eastern Standard Time] “POST
/guesswhat/guess HTTP/1.1” 200 623

http://localhost:3000/guesswhat -> /guesswhat/guess

Notice the difference between the first and third actions:

Does anyone know what the problem is? I hope this isn’t too confusing…
it’s hard to explain. If you have the book you can run the example
and see what you encounter.

Thanks in advance,

make sure you are including the javascript prototype library

<%= javascript_include_tag “prototype” %>

hope that helps!

First step, have you included the required java scripts on the page?
<%= javascript_include_tag :defaults %>

I read through the part and I dont think they mention the needed
includes (or at least its hard to spot when they do).

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