database queries using autocomplete

Hello All, I am new to Rails and am unable to figure out how to do multiple table queries to a database using autocomplete forms.

I have : Author habtm Books through Works || Book has_many Chapters || Chapter has_many Sections And a table unrelated to these directly called Keywords.

How can I create a page where I provide autocomplete boxes for each of these so that a user can choose for a particular keyword/s, author/s and book/s using Boolean logic? (one view with multiple table search boxes)

ex: keyword 'civilization' AND/OR/NOT author 'Jay' AND/OR/NOT book 'xyz'

I was able to create multiple choice autocomplete boxes using the following code:

<%=javascript_include_tag :defaults%> <h4> Search for Authors </h4> <% form_for :author, :url =>{:action => "show", :controller => "author"} do |form|%>   <%= text_field_with_auto_complete :author, :name, {},{:tokens => [',', '\n']}%>       <%=submit_tag "Go", :id => @author%>    <%end%>

But once I added the tokens options, my show action does not work for more than one choice (it works fine when only one author was chosen).

My show.rhtml looks like this:

<% for column in Author.content_columns %>   <%= column.name %>:</b> <%=h @author.send(column.name) %>   <% end %>

Can someone please help me out?

Thanks, KK