Rails 个型号：SQL 个 OR AND 关键字

Question

我使用 rails，我想要这样的请求：

SELECT * FROM events WHERE id = 5 AND 
active = true AND 
(current_state = 0 OR current_state = 1)

我写的是这样的：

Event.where(id:5).where(active:true).or(Event.where(current_state:)).or
(Event.where(current_state: 1))

但是当我这样做的时候，我有这样的要求：

SELECT * FROM events WHERE id = 5 AND 
active = true AND 
current_state = 0 OR current_state = 1

我怎样才能有括号？

Answer 1

你可以这样做：

Event.where('WHERE id = ? AND active = ? AND (current_state = ? OR current_state = ?)', 5, true, 0, 1)

Rails models : SQL OR AND keywords