Rails pass ID from auto_complete field to observe_field - ruby-on-rails

Question

<p>Song Name:<%= text_field :songlists, :song_name, :id => "songlists_" + section.id.to_s + "_song_name" %></p>
<%= auto_complete_field "songlists_" + section.id.to_s + "_song_name", :method => :get,
:with => "'search=' + element.value", :url => formatted_songlists_path(:js) %>
<p>Artist:<%= text_field :songlists, :artist, :id => "songlists_" + section.id.to_s + "_artist" %></p>
<%= observe_field ("songlists_" + section.id.to_s + "_song_name", :update => "songlists_" + section.id.to_s + "_artist", :with => "element.value" , :url => { :controller => :songlists, :action => "get_artist" } ) %>
I have the auto-complete-field working fine, and the observe-field is triggering according to firebug, but I'm unsure how to update the text-field from the observe-field.
I either need to get the ID that the auto-complete finds, or even the text entered so that I can pass it into the :url of the observe-field.
Any ideas?

Answer 1

Can you walkthrough what you want this code to do?

Answer 2

I'm trying to get the response from the auto-complete field, to update another text-field with the results. I have the responses working now in firebug, but I can't seem to get it to update the box with the results.
<p>Song Name:<%= text_field :songlists, :song_name, :id =>
"songlists_" + section.id.to_s + "_song_name" %></p>
<%= auto_complete_field "songlists_" + section.id.to_s +
"_song_name", :method => :get,
:with => "'search=' + element.value",
:url => formatted_songlists_path(:js) %>
<p>Artist:<%= text_field :songlists, :artist %></p>
<%= observe_field "songlists_" +section.id.to_s + "_song_name",
:frequency => 0.5,
:url => { :controller => :songlists,
:action => :get_artist },
:update => "songlists_artist",
:with => "song_name" %>
controller code
def get_artist
#songlist = Songlist.find(:all, :conditions => ['name = ?', params[:song_name]])
if !#songlist.empty?
render :update do |page|
page.replace_html 'songlists_artist', :partial =>
'get_artist', :object => #songlist
end
end
end
In firebug I see this response
try {
Element.update("songlists_artist", "Robbie Williams");
} catch (e) { alert('RJS error:\n\n' + e.toString());
alert('Element.update(\"songlists_artist\", \"Robbie Williams\");');
throw e }
But it is not updating my text-field, any ideas?