Mongoose provides 4 different ways to remove a document from a MongoDB collection. These methods include deleteOne(), deleteMany(), and findOneAndDelete(). deleteMany() method The deleteMany() method removes all documents that match the given conditions from the MongoDB collection. It returns an...
Alternatively, you canretrieve the documentfrom the MongoDB collection, set the value of the field you want to delete toundefinedand then save it. In Mongoose, setting a document field toundefinedwill send$unsetcommand to MongoDB: // Retrieve documentconstuser=awaitUser.findOne({name:'Alex'})...
但是我的Mongoose版本是5.9.官方已经提示上述的方法是一个已废弃的方法.不要使用了.建议使用别的方法代替. 5.9之后的方法:Model.deleteMany() // Student是一个Model.Student.deleteMany({},function(err) {console.log("success");}); 3|0参考 Model.deleteMany() -- Mongoose官方文档 mongoose delete all docu...
In this way, we will be able to renew the token periodically and save it on the client’s side. To understand this better, look at the diagram below: The client sends an email and password to the server. The server verifies the user’s data with those in the MongoDB database. If ...
In this section, you will create a new file to run the Express server, connect to the MongoDB Atlas database, and import future routes. Create a newserver.jsfile and add the following lines of code: server.js constexpress=require("express");constmongoose=require("mongoose");constfoodRouter...
First, import themongoosemoduleusing therequirefunction: ~/node_project/db.js constmongoose=require('mongoose'); Copy This will give you access to Mongoose’s built-in methods, which you will use to create the connection to your database. ...
With your database now connected, you can create mongoDB operations to create, read, modify or delete a document. With the mongo client, you will operate directly with the commands defined by MongoDB. Here is an example of creating a document: ...
Having used the middleware to obtain the Person object in question for update and delete, those become pretty straightforward uses of the save and delete methods provided by Mongoose on the objects themselves. As shown in Figure 3, inserting a new Person just requires instantiating a new Person ...
Data Transformation Before sending data to the frontend, sensitive fields are removed: userSchema.set("toJSON", { transform: (doc, ret) => { delete ret.password; delete ret.verificationToken; delete ret.passwordResetToken; return ret; }, }); This approach ensures security while maintaining ty...
Once done, go to the created Nest.js project:cd ecommerce -api Install the database dependencies that we will use in this guide:npm i --save @nestjs/mongoose Handling the Products list Step 1. Model definition Inside the src/models directory, create a product.schema.ts file. In it, de...