From: Charlie Squires <charles.squires@...>
Date: 2005-12-13T02:07:50+09:00
Subject: Re: AJAX in Ruby on Rails

Just to save someone a post... I know there's a Rails list, but I have 
limited access to it from work (where I am now).

"Charlie Squires" <charles.squires@sas.com> wrote in message 
news:dnk9db$n8i$1@foggy.unx.sas.com...
> I'm having some trouble getting AJAX working properly for me in Rails. 
> I've tried the example in "Agile Web Development with Rails" on page 391 
> using form_remote_tag(), and instead of updating a <div> like it should, 
> it renders the form as an entirely new page.  I've tried in on Windows XP 
> and 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
> end
>
> def blah
>    @stuff = 'should print'
>    render :partial => 'form'
> end
>
>
> index.rhtml:
> <h3>Display me!</h3>
> <div id="update_me">
>    <%= render(:partial => 'form') %>
> </div>
>
> _form.rhtml:
> <% if @stuff %>
>    <p> <%= @stuff %>
> <% end %>
>
> <%= form_remote_tag(:update => "update_me", :url => { :action => :blah } ) 
> %>
>    blah blah blah
> <%= end_form_tag %>
>
> When you submit the form, the <h3>Display me!</h3> part doesn't show 
> again. The render :partial => 'form' from the 'blah' action just renders 
> the form and doesn't update the "update_me" <div> section.  The WEBrick 
> output is as follows:
>
> 127.0.0.1 - - [12/Dec/2005:10:43:28 Eastern Standard Time] "GET /guesswhat 
> HTTP/1.1" 200 851
>
> - -> /guesswhat
>
> 127.0.0.1 - - [12/Dec/2005:10:43:28 Eastern Standard Time] "GET 
> /favicon.ico HTTP/1.1" 200 0
>
> - -> /favicon.ico
>
> 127.0.0.1 - - [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:
> - -> /guesswhat
> http://localhost:3000/guesswhat -> /guesswhat/guess
>
> 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 
> yourself and see what you encounter.
>
> Thanks in advance,
> Charlie
>