结合两处查询

Question

如何合并这两个ActiveRecord关系？

activity1 = PublicActivity::Activity.where("user_recipients LIKE ':id,%' or user_recipients LIKE '%, :id' or user_recipients LIKE '%, :id,%' or user_recipients = ':id'", id: current_user.id) 

activity2 = PublicActivity::Activity.where(recipient_id: current_user.id, recipient_type: 'User') 

当我做到这一点，如果是空的，他们默认为空单

@activity = activity1.merge(activity2) 

Answer 1

很简单，为什么合并是返回空数组这是因为它使用的查询之间AND试试这个：

@activity = (activity1 + activity2)