Ruby on Rails

def get_all_users     csv = ""     csv1="Id,Email"     csv2 = ""     csv << "#{csv1}\n"     csv << "#{csv2}"     @user = User.find(:all)     @user.each do |x|        csv2 << "#{x.id}"        csv2 << ",\"#{x.email}\""        csv2 << "\n"      end    csv << csv2    send_data csv, :type => 'text/xls; charset=utf-8; header=present', :disposition => "attachment;filename=xyz.xls" (or) send_data csv, :type => 'text/csv; charset=utf-8; header=present', :disposition => "attachment;filename=xyz.csv" end In Views <p><%=link_to "hello",:controller => "user" ,:action => "get_all_users"%></p>