如何将haml的变量插入coffeescript，将什么作为一个类从haml

Question

这是我在haml中的link_to

  #actions
    .btn-group
      = link_to report_path(type: 'link', search: params[:search]) ), id: 'download', class: '1_download report-btn' do
      = link_to report_path(type: 'link', search: params[:search]) ), id: 'download', class: '2_download report-btn' do

这是我的咖啡但是没有效果

  target_link = switch
    when  $("#report_actions a.1_download") then target_link = $("#report_actions a.1_download")
    when  $("#report_actions a.2_download") then target_link = $("#report_actions a.2_download")
    when  $("#report_actions a.3_download"),  $("#report_actions a.3_download")
      if target_link.length > 0
        init_socket()