想做一个省份城市的联动的下拉框 照网上说的写成这样 <%= select_tag :province, options_from_collection_for_select(@prov_city,"prov_name", "prov_name",@user_profile.province), {:prompt => "选择省份"},{ :onchange=>remote_function( :update=>"city", :with=>"'prov_name='+this.value", :url=>{:action=>:get_city} ) }%> 但是发现http://apidock.com/rails/ActionView/Helpers/PrototypeHelper/remote_function 上说 This method is deprecated or moved on the latest stable version. The last existing version (v3.0.9) is shown here. 求教我 3.2.9 该怎么做呢 谢谢大家