Mongo:如何通过存储在子数组中的ObjectId查找? [英] Mongo: how to find by ObjectId that is stored in a subarray?

问题描述

我有一个这样的记录集合:

I have a collection with records like this:

{
    "_id" : ObjectId("50ae3bdb50b3d6f01400027a"),
    "admins": 
       [ObjectId("50ae3bdb50b3d6f014000279"), ObjectId("50ae3bdb50b3d6f01400027e")]
}

我想通过'admin'数组进行搜索.

I would like to search by the the 'admin' array.

如何在子数组中找到所有包含的文档，例如ObjectId("50ae3bdb50b3d6f014000279").

How can I find all documents included for example ObjectId("50ae3bdb50b3d6f014000279") in the sub-array.

谢谢.

推荐答案

您可以像对非数组字段一样对admins这样的数组字段进行匹配:

You can match against array fields like admins the same as you would a non-array field:

db.coll.find({admins: ObjectId("50ae3bdb50b3d6f014000279")})

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