node.js Mongoose - 在一个函数调用中删除多个文档

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时间:2020-09-02 18:16:59  来源:igfitidea点击:

Mongoose - remove multiple documents in one function call

node.jsmongodbmongoosemongoose-schemadatabase

提问by Maciej Krawczyk

In documentation there's deleteMany() method

在文档中有 deleteMany() 方法

Character.deleteMany({ name: /Stark/, age: { $gte: 18 } }, function (err) {});

I want to remove multiple documents that have one common property and the other property vary. Something like this:

我想删除具有一个共同属性而另一个属性不同的多个文档。像这样的东西:

Site.deleteMany({ userUID: uid, id: [10, 2, 3, 5]}, function(err){}

Site.deleteMany({ userUID: uid, id: [10, 2, 3, 5]}, function(err){}

What would be the proper syntax for this?

什么是正确的语法?

回答by Kevin

I believe what youre looking for is the $inoperator:

我相信你要找的是$in运营商:

Site.deleteMany({ userUID: uid, id: { $in: [10, 2, 3, 5]}}, function(err) {})

Documentation here: https://docs.mongodb.com/manual/reference/operator/query/in/

此处的文档:https: //docs.mongodb.com/manual/reference/operator/query/in/

回答by laxman

You can also use.

您也可以使用。

Site.remove({ userUID: uid, id: { $in: [10, 2, 3, 5]}}, function(err, response) {});

回答by estani

I had to change idto _idfor it to work:

我不得不改变id,以_id它的工作:

Site.deleteMany({ _id: [1, 2, 3] });

This happens if no id is defined and the default one is used instead:

如果未定义 id 而使用默认值,则会发生这种情况:

"Mongoose assigns each of your schemas an _id field by default if one is not passed into the Schema constructor." mongoose docs

“如果没有将 _id 字段传递给 Schema 构造函数,Mongoose 会默认为每个模式分配一个 _id 字段。” 猫鼬文档

回答by ramana vv

Yes, $inis a perfect solution :

是的,$in是一个完美的解决方案:

Site.deleteMany({ userUID: uid, id: { $in: [10, 2, 3, 5] } }, function(err) {})

Site.deleteMany({ userUID: uid, id: { $in: [10, 2, 3, 5] } }, function(err) {})