Sorting fetched collection from ActiveRecord or ThinkingSphinx

I have two questions.

1. Is there a way to sort collection from ActiveRecord or Thinking Sphinx without re-select everything from database/sphinx? ie.

   @models = Model.where("foo = :foo", {:foo => params[:foo]}) models.some_code_or_method_which_will_resort_everything

2. Is this game worth a candle(sorting array/collection without fetching again)? I wonder which option is better for performance.

Thanks in advance.

Edit

So, this game is worth a candle when you:

• don't use pagination(you must have all records)
• refresh page div with ajax(don't fetch everything again with calling index or show action)

Art for art's sake开发者_如何学Python..

I'm pretty much sure 'sort' should work:

  @models.sort! { |a,b| a.foo <=> b.foo }

Answering the second question, yes, it does. It pretty much depends on the amount of objects in your collection, but generally it is usually a performance win