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流星-通过Mongo ObjectId从集合中查找文档

分类: 技术问答 • 2022-04-01 19:48:26

流星-通过Mongo ObjectId从集合中查找文档

问题描述：

如果您直接在Mongo内部创建Mongo文档，并希望通过Meteor访问同一文档，那么完成此任务的最佳方法是什么?

If you create a Mongo document directly inside Mongo and want to access this same document via Meteor, what is the best way to accomplish this task?

尝试访问时出现不确定的结果.

I am getting undefined result when I attempt to access.

如果您从Meteor创建新文档，则该ID不会以ObjectId(")开头.

If you create a new document from Meteor it does not prefix the id with ObjectId("").

任何帮助将不胜感激.

我只想通过确切的ObjectId查找确切的文档.

I want to simply find exact document by exact ObjectId.

答

使用Meteor.Collection.ObjectID:

var oid = new Meteor.Collection.ObjectID("a86ce44f9a46b99bca1be7a9");
var doc = SomeCollection.findOne(oid);

有关如何在集合中生成唯一ID的信息，请参见选项.但是，流星的一般做法是使用字符串方法，因为客户端随后可以可靠地生成唯一ID.

See the options for how unique IDs in collections are generated. However, it's general practice in Meteor to use the string approach because clients can then generate unique IDs reliably.

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