Ruby on Rails：命名範圍與lambda和一個數組

Question

named_scope :all_public, lambda { |users| 
     { :conditions => ["visibility = ? || (visibility = ? && user_id = ?)", Shared::PUBLIC, Shared::PRIVATE, users] } 
    } 

這對一個用戶很好，但有沒有辦法修改它的用戶是一個用戶id數組？

Answer 1

像這樣的東西，然後就通過一個單一的元素數組一個標識的情況下

named_scope :all_public, lambda { |users| 
     { :conditions => ["visibility = ? OR (visibility = ? AND user_id IN (?))", Shared::PUBLIC, Shared::PRIVATE, users.join(',')] } 
    }