页: 1
class Article
include Mongoid::Document
embeds_many :comments
end
class Comment
include Mongoid::Document
embedded_in :article
end
由于<代码>Comment 是条/代码>的嵌入式文件。 我将如何列出<>万能>。 对<代码>created_at的评论?
我是否应当这样做,这样的话,评注不是载于<条码>><>条/代码>,或者是否与上述图表有某种关系?
If you re trying to query comments out of context of their articles, then clearly comment should be a top level entity and not embedded one.
在固有情况下,你可以使用地图或聚合框架。 固定的电梯语言在这里赢得帮助。
为什么不光是default_cop :order=>创设_at DESC ?
You re going to want them to be in a consistent order across the site anyway.
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