铁路 我有一个示范信息:背书,内容
我想提出这样一个问题,即按行文行事。
如果是目前的@message。 内容等于任何@message。 所产生的内容从现在起不到10分钟,但真实的回报是假的。
我怎么会像现在这样积极探讨? 增 编
你们可以尝试这样做。
Message.exists?(["created_at >= ? and content = ?", @message.created_at.advance(:minutes => -10), @message.content])
http://guides.rubyonrails.org/active_record_querying.html# There-of-objects”rel=“nofollow”>here。
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