Question

如何在Ruby On Rails 3中为MySQL表设置别名？

data = TUP.all :select => 
  "DATE(tup.created_at) as date
   , ROUND(SUM(fo_count)/#{authors_count}) AS followers"
   ,:joins => "INNER JOIN tlsts AS tl ON tl.user_id = tup.user_id"
   ,:conditions => condition

我的意思如下：我可以在此代码中为表TwitterUserProfile设置别名 tup 吗？
对于什么参数：from =＆gt; ？

Answer 1

在您希望加入该表的模型中使用set_table_name :table_name。例如：

  class UserRole < ActiveRecord::Base
    set_table_name :user_roles # Add user_roles table to UserRole model so, you can make query to that table like: @user_roles = UserRole.all/ @user_role = UserRole.find(params[:id]) etc.
  end

如何在Ruby On Rails 3中为表MySQL表设置别名？

1 个答案: