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:
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"
}
}
});
这篇关于使用mongoDB插入子文档的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!