如何在Ruby On Rails 3中为表MySQL表设置别名？

问题描述

| 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

我的意思是：在哪里可以在此代码中为表TwitterUserProfile设置别名tup？ 对于什么参数：from =>？

解决方法

在要关联该表的模型中使用

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