将两个ActiveRecord的查询结果 [英] Combine two ActiveRecord Query results

问题描述

我现在有两个活动的记录查询，我想结合在一起

I currently have two active record queries that I would like to combine together

joins("join relationships ON user_id = followed_id").
              where("follower_id = #{user.id}")

和

where(:user_id => user.id)

基本上我想要的第二个结果出现的第一个类似 UNION 语句在SQL。它可以在ActiveRecord的这样做呢？

Basically I want the results of the second one to appear with the first similar to a UNION statement in SQL. Can it be done in ActiveRecord in this way?

我会preFER使用工会相当有参加所有的 followed_id S在一个字符串，并使用在在SQL条款。

I would prefer to use a union rather that have to join all the followed_ids in a string and use the IN clause in sql.

任何想法？

-----编辑------ 我要寻找一种方式来获得这个懒惰的加载工作。

-----Edit------ I am looking for a way to get this to work with lazy loading

推荐答案

使用关系和放大器;关于：

Model.joins("join relationships ON user_id = followed_id").where("follower_id = {user.id}") & Model.where(:user_id => user.id)

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