rails select几种用法

<%=select_tag('site_id',options_for_select(@sites.collect{|s| [s.name,s.id]}.insert(0,["所有",0])) )%>

 

<%=select_tag('server_room_id',options_from_collection_for_select(ServerRoom.find_all_have_site_server_rooms,:id,:room))%>

 

<%=select('site','id',Site.find(:all).collect{|s| [s.name,s.id]}.insert(0,["所有",0]))%>

这种在controller处理时格式params[:site][:id]

 

<%=select('site','isp_id',Isp.find(:all).collect{|i| [i.name,i.id]},{[color=red]:selected[/color]=>@site.isp_id})%>

选中某个值

 

<%=f.datetime_select :end_time, :use_month_numbers => true%>  #设置时间，把月设为数字