Question

我用Rails 3

<%= select_tag :area_id, options_from_collection_for_select(@areas.sort_by(&:name)), {:onChange => remote_function(:with => "'filter_by='+value", :url =>{ :controller=>"encoder/members", :action=>"filter_schools" }) } %> 

這select_tag但我一直得到錯誤「錯誤的參數數目（1 3）。」什麼可能是錯的？

Answer 1

問題出在options_from_collection_for_select，它至少需要3個參數。