csv

csv.rb

  def show
    @results = Foo.all
    respond_to do |format|
      format.csv { render_csv "report"}
    end
  end

  private

  def render_csv(filename = nil)
    filename += '.csv'
    if request.env['HTTP_USER_AGENT'] =~ /msie/i
      headers['Pragma'] = 'public'
      headers["Content-type"] = "text/plain"
      headers['Cache-Control'] = 'no-cache, must-revalidate, post-check=0, pre-check=0'
      headers['Content-Disposition'] = "attachment; filename=\"#{filename}\""
      headers['Expires'] = "0"
    else
      headers["Content-Type"] ||= 'text/csv'
      headers["Content-Disposition"] = "attachment; filename=\"#{filename}\""
    end
  end