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我正在通过this Stackoverflow answer阅读关于如何在一个查询中插入Mongoid中的多个文档。从我读的答案:用Mongoid批量插入多个记录?
batch = [{:name => "mongodb"}, {:name => "mongoid"}]
Article.collection.insert(batch)
我需要一个例子来了解它是如何工作的。假设我们有文章分类:
class Article
include Mongoid::Document
include Mongoid::Timestamps
field :subject, type: String
field :body, type: String
field :remote_id, type: String
validates_uniqueness_of :remote_id
belongs_to :news_paper, :inverse_of => :articles
end
而我例如创建的物品数组:
[ {subject: "Mongoid rocks", body: "It really does", remote_id: "1234", news_paper_id: "abc"},
{subject: "Ruby rocks", body: "It really does", remote_id: "1234", news_paper_id: "abc"},
{subject: "Rails rocks", body: "It really does", remote_id: "5678", news_paper_id: "abc"} ]
如何创建它们,并在同一时间,确保验证捕获,我有2个remote_id的是一样的吗?
感谢您的回答。但是应该在哪里放入index({remote_id:1},{unique:true})。它是否在模型中? – ChristofferJoergensen
是的,请参阅文档以获取更多详细信息http://mongoid.org/en/mongoid/docs/indexing.html – Zakwan
任何想法如何在服务器上创建索引。在本地,您可以简单地从终端位置的终端创建索引。但在服务器上,似乎我无法从'〜/ applications/myapp/current'中执行。 – ChristofferJoergensen