RE: grouped output

I think you will want to use the new group_by function. Here is an
example:

p = Person.find(:all)
grouped = p.group_by(&:center)

Now ‘grouped’ is a hash where the key is ‘center’ and the value of the
hash is the groups of people.

Now you can do:

grouped.each do |center, person|
puts center
person.each do |p|
List out the people
end
end

Further reading at:
http://weblog.rubyonrails.org/articles/2006/03/01/new-in-rails-enumerable-group_by-and-array-in_groups_of

Thanks for the link David, will check it out.

Thanks again,

Jin