Mongoose 有专门的中间件用于 findOneAndUpdate()，调用 findOneAndUpdate() 不会触发、findOne 或中间件 updateOne。save 但它确实触发了 findOneAndUpdate中间件。const schema = Schema({ name: String, rank: String});schema.pre('findOneAndUpdate', function middleware() { this.getFilter(); // { ...
ThefindOneAndUpdate()function in Mongoosehas a wide variety of use cases.You should usesave()to update documents where possible, for bettervalidationandmiddlewaresupport. However, there are some cases where you need to usefindOneAndUpdate(). In this tutorial, you'll see how to usefindOneAndUpda...
mongoose之findOneAndUpdate方法之代码示例 categoryModel.findOneAndUpdate({name:{$in:req.body.categorys}},{$inc:{total:1}},function(err){if(err)returnconsole.log(err); res.json({status:'ok',msg:'发布成功'}) }) //在category集合里查找name在 req.body.categorys 这个数组里的文档,将查找到的...
Mongooseupdate更新MongoDB数据##数据更新 学习了数据的保存,接下来我们就开始学习对数据的更新吧! 1.示例:obj.update(查询条件,更新对象,callback); var conditions = {name : 'test_update'}; var update = {$set : { age : 16 }}; TestModel.update(conditions, update, function(error){ if(error) ...
var userSchema = mongoose.Schema({ local : { email : String, password : String, }, devices : [{ id : String, name : String }] }); And this is the code where i want to add a device to the arraydevices: function updateDeviceList(user, deviceID, deviceName) ...
Message.findOneAndUpdate( req.params.id, { $push: { replies: reply } }, { upsert: true }, // upsert looks to find a Message with that id and if it doesn't exist creates the Message function(err, data) { // Handle err });...
问如何在update中使用位置$操作符旁边的$subtract聚合管道操作符？EN根据注释--因为“应用程序”是一个...
我已经得到一切工作，除了一个小(虽然相当重要的一部分)跟踪用户的投票.在使用mongoose操作mongodb数据库...
$ npm install --save-dev @types/mongoose $ npm i --save @nestjs/graphql apollo-server-express graphql-tools graphql 1. 2. 3. 二、基本配置 1、新建一个文件夹graphql存放graphql-Module的文件 import { MiddlewaresConsumer, Module, NestModule, RequestMethod } from '@nestjs/common'; ...
.updateOne({ $pull: { pokemon: { _id: req.body.id } } }, function( err, data ) { console.log("ERROR:", err, data, err.message); }) .then((offTeam) => { res.status(200).json(offTeam); }) .catch((e) => { return res.status(400).json({ msg: e.message }); ...