Ferret talk - Aug 2007 - Can''t find using instance method as field

Hi, I just started experimenting with acts_as_ferret. It''s working
great
if I''m searching through database fields through a setup like:

acts_as_ferret :fields => [''title'']
Page.find_by_contents(''Blue'')




But if I try searching through an instance method, I get no results
back. Anybody know why?

acts_as_ferret :fields => [''extra'']
def extra
  ''Example''
end

# after deleting the index directory, running "reload!" in the
console:
>> Page.find_by_contents(''Example'')
=> #<ActsAsFerret::SearchResults:0x2883ba8 @results=[], @total_hits=0>


It is reindexing since the development.log has many lines like:
creating doc for class: Page, id: 9
Adding field extra with value ''Example'' to index
creating doc for class: Page, id: 10
Adding field extra with value ''Example'' to index
-- 
Posted via http://www.ruby-forum.com/.

It seems that I needed to exit and reenter the irb console before 
changes are noticed.
-- 
Posted via http://www.ruby-forum.com/.