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 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(); // { ...
function(doc) { doc.end = doc.begin + 10; db.docs.save(doc); } ) This is the syntax for the Mongo shell-- you might have to make some changes for Mongoose,as per the API.
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...
I am trying to write to write an update to a Mongo document using the Mongoose findOneAndUpdate function. Essentially, I have a document that has an array of another Schema in it, and when I attempt to append more of those schema type, I get the following error: ...
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) ...
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...
问Mongoose / Express findByIdAndUpdate不工作EN写在最前面 使用 node 完成一个 todolist app 的 ...
User.findByIdAndUpdate(userid, body, {pwd: 0}, function(err, doc){ if(err) { console.log(err) } console.log(doc) }) 这个方法的过滤不是这么写吗?doc里面还是会有pwd这个属性mongoose 有用关注2收藏 回复 阅读2k 1 个回答 得票最新 Hfinmily 148228 发布于 2017-12-20 ✓ 已被采纳 第三个...
const mongoose = require('mongoose') const Schema = mongoose.Schema const userSchema = new Schema({ user: { type: String, required: true, }, status: [String], age: Number, }, { versionKey: false }) //生成表 const userDB = mongoose.model('users', userSchema) ...