Parker Smith Software

In rails 2 the auto_complete functionality has been moved into a plugin, so to use it you will need to first install the plugin with:

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script/plugin install auto_complete

Now you can use the same auto complete functionality you are used to by adding the auto_complete_for declaration to your controller. One last gotcha is the route, you will have to add it to your routes.rb. One thing that may help if you have quite a few auto complete fields is to add a wild card route like so:

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map.auto_complete ':controller/:action', 
     :requirements => { :action => /auto_complete_for_\S+/ },
     :conditions => { :method => :get }