<%= select_tag(:category_id, options_for_select(@categories), :prompt => "类别") %>
解决方法 http://fanliangchun.logdown.com/posts/1365905-1-30-study-notes-how-to-add-a-category
<%= select_tag(:category_id, options_for_select(@categories), :prompt => "类别") %>
解决方法 http://fanliangchun.logdown.com/posts/1365905-1-30-study-notes-how-to-add-a-category