gistfile1.rb

@people = People.find(:all) do
  any do
    if !criteria.numeric?
      all do
        first_name =~ criteria.split(' ')[0] + '%'
        last_name =~ criteria.split(' ')[1] + '%' if criteria.split(' ').length > 1
      end
      all do
        last_name =~ criteria.split(' ')[0] + '%'
        first_name =~ criteria.split(' ')[1] + '%' if criteria.split(' ').length > 1            
      end
    end
  end
end