From: Joe Smith <stone1549@...>
Date: 2006-12-06T04:33:52+09:00
Subject: RJS/link_to_remote

I'm trying to build an WebFTP application in Rails for some practice.

Here is a link located in a partial named _display_file that is called
by a partial named _list_files.  A similar link is created for every
directory in the FTP

<%= link_to_remote filename ,
                   :url => {:action => 'chdir' , :ftp_dir => filename},
                   :update => 'ftp_div' %>

It should, to my understanding, make a call to the 'chdir' action and
use the results to update the ftp_div.

The controller action 'chdir' is shown below:

def chdir
  @ftp = session['ftp']

  @ftp.chdir( params[ :ftp_dir ] )
  session['ftp'] = @ftp
  @list = @ftp.list("-a")
end

btw, I can store the ftp object inside a session because I've enabled
memory_cache instead of other session types.  So that's not the issue,
it works without the AJAX.

Finally the file chdir.rjs is shown below:

page.replace_html("ftp_div" , :partial => "list_files" , :object =>
@list)



So basically, the user should be able to click on the directory and the
directory listing should be updated without a page refresh.  Instead I
get this error when click on one of the links:



RJS error:

TypeError $(element) has no properties

Afterwords I get a "notice" box  containing what appears to be the code
I would like to appear in the ftp_div division...  It looks something
like this:



Element.update("ftp_div", "<!-- Start FTP List table -->
<table border=\"1\">
etc...

with the etc... being replaced by the content that should be showing in
the browser.  Any suggestions would be appreciated.

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