<%-
  # Based on Active Admin
  generator = RUBY_VERSION =~ /^1.8/ ? FasterCSV : CSV

  output = generator.generate do |csv|
    cols = @interface.attributes_for(:index)
    csv << cols.map{|col| col[:title]}
    @collection.each do |object|
      csv << cols.map do |col|
        if col[:data]
          instance_exec(object, &col[:data])
        else
          pretty_format(object.send(col[:attribute]))
        end
      end
    end
  end
%>
<%= output.html_safe %>