render :text => proc and CSV::Writer

Hi all.

In my Rails 2.1 code (I am skipping 2.2...) used to do something like this from a reports controller:

    render_proc = proc do |response, output|       CSV::Writer.generate(output) do |csv|         csv << [ 'Login', 'Name', 'Email' ]         User.find(:all).each do |user|           csv << [ user.login, user.name, user.email ]         end       end     end

    render :layout => false, :text => render_proc

This no longer works because CSV:Writer wants to call <<() and it is not defined.

Was this removal intentional?

As a side-note, it looks like other people seem to build the whole CSV as a string and then ship it at the end. Maybe my strategy results in the same behaviour under Rails unless I explicitly flush it somehow, in which case maybe I should just copy what everyone else is doing...

TX