Forum: RForum migrate question?

 my old schema version was 4,if i update the newest version to 12, my 
old data will be affected?or does these changes make my old version 
forum don't work well:
 same situation like my,if i want update my rforum as you guys 
provided,what's
key things should i pay attention, for i want my rforum work as well as 
it used to be?

Vincent Tsao wrote:
>  my old schema version was 4,if i update the newest version to 12, my 
> old data will be affected?

No. Just use "rake migrate" to upgrade the database, and it should work 
with the new version. But make a backup of your database just in case.

 Thanks, I have checked already this afternoon, so can you give me some 
advise
about one of my anther post named 'Search Failure',it seems the ferret 
does not
work in my new rforum.you guys can see my log details there.
 I check the code,and try to debug, problem seems occured here:

def find_id_by_contents(q, options = {})
  options[:num_docs] = configuration[:max_results] if options[:num_docs] 
== :all
          result = []
          index = self.ferret_index
          hits = index.search(q, options)
          hits.each do |hit, score|
         # only collect result data if we intend to return it
          doc = index[hit]
          model = configuration[:store_class_name] ? doc[:class_name] 
:self.name
=here=       if block_given?
              yield model, doc[:id].to_i, score
            else
              result << { :model => model, :id => doc[:id], :score => 
score }
            end
          end
          logger.debug "id_score_model array: #{result.inspect}"
          return block_given? ? hits.total_hits : result
        end

  am i must config sth for ferret? in fact ,i install ferret already : 
gem install ferret