# File lib/thinking_sphinx/search.rb, line 302
    def excerpt_for(string, model = nil)
      if model.nil? && one_class
        model ||= one_class
      end
      
      populate
      client.excerpts(
        {
          :docs   => [string.to_s],
          :words  => results[:words].keys.join(' '),
          :index  => options[:index] || "#{model.source_of_sphinx_index.sphinx_name}_core"
        }.merge(options[:excerpt_options] || {})
      ).first
    end