使用mongoDB插入子文档

本文介绍了使用mongoDB插入子文档的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我在集合中有以下文件：

I have the following document in the collection:

"_id" : "2", "workspace" : [{ "name" : "1", "widgets" : [ ] },{ "name" : "2", "widgets" : [ ] },{ "name" : "3", "widgets" : [ ] },{ "name" : "4", "widgets" : [ ] } ]}

如何在小部件中为名称3插入 {id：1，blabla：blabla} ？

How can I insert {id: "1", blabla: "blabla"} in "widgets" for the "name" 3?

推荐答案

与之前的答案相比，只需将所有内容插入到文档的根目录中，这是正确的方法与位置运营商：

In comparison to a previous answer which just inserts everything into the root of the document, here is a correct way to do this with positional operator:

db.t.update({ "_id" : "2", "workspace.name" : "3" },{ $push: { 'workspace.$.widgets' : { id: "2", blabla: "blabla" } } });