为什么我会收到此错误?我确实在用户表中有“last_signed_in_at”列。
Mysql2::Error:'order 子句'中的未知列'last_signed_in_at'
我的代码是
控制器
@users = @post.likes
看法
<% @users.order("last_signed_in_at DESC").limit(3).each do |user| %>
<li>
<%= user.profile.nickname %>
<%= user.last_active_at %>
</li>
<% end %>
<%= 调试(@users) %>
[#<ActsAsVotable::Vote id: 2, votable_id: 4, votable_type: "Post", voter_id: 1, voter_type: "User", vote_flag: true, created_at: "2012-12-22 13:30:37", updated_at: "2013-01-01 18:55:51">,
#<ActsAsVotable::Vote id: 7, votable_id: 4, votable_type: "Post", voter_id: 2, voter_type: "User", vote_flag: true, created_at: "2012-12-23 14:47:04", updated_at: "2013-01-02 00:36:48">]