如何找到Rails中零的相反愉快地使用<code>Mongoid</code>和<code>ActiveRecord</code>這樣的查詢

Question

？

# find me the tasks for project_id that have been archived 
# i.e. where archived_at is not nil 

想不通或發現的第一行代碼的倒數。 我認爲它應該是簡單的:)

Answer 1

我想你想用這個：

:archived_at.ne => nil 

在這裏看看：MongoId-Matchers-NE