Rails - Aug 2006 - How do I pass query from from to the controller?

Hi

I need to pass a query string for a search to a controller from the 
view.

View:
 <%= start_form_tag(:action => ''get_results'') %>
                <%= text_field ''search'',
''search_term''  %>
                <%= submit_tag "Search" %>
                <%= end_form_tag %>

Controller:
def get_results(query)
    @results = Advert.find(:all,
                           :conditions => "title =
''#{query}'' OR
description ''#{query}''",
                           :order => "created_at DESC")
    return @results
  end

What do I need to add to the view?

Thanks,

David

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