I need a little help. I've a collection which has a field dimension and that field contains array of different objects, which looks like this Collection - 1: [ { "_id": { "$oid": "6423cddbf4db0d397b22390a" }, "dimension": [ { "_id": {…
I have this attendance data for a particular student. If he was present then marked 1 else marked 0 in the respected subject. How I can calculate the total attendance out of it. Please help me out... { "CGMM": {…
Product Collection: [ { "isActive": true, "_id": "643bbdee68b521035e20c976", "name": "lu", "price": 123, "userId": "643abd0dcce4df3b1a0c8fa7" }, { "_id": "643bbdd668b521035e20c972", "name": "mu", "price": 123, "userId": "643abd0dcce4df3b1a0c8fa7", "isActive": true, "__v": 0 }, { "isActive": true, "_id": "643bbdbc68b521035e20c971", "name": "nu", "price": 123, "userId": "643abd0dcce4df3b1a0c8fa7"…
I want to replace all documents in my collection and replace them with new documents. So far, I tried using deleteMany() then create() but there seems to be a small latency between the 2 operations. So is there any way…
All versions installed of socket.io and socket.io-client are the same in my mern app. Here is my server code: const app = express(); mongoose.connect(MONGOOSE_URL, { useNewUrlParser: true, useUnifiedTopology: true, }).then(() => { console.log(`MongoDB connected successfully`); }).catch((error) => console.log(`${error} did not…
I have a project mongoose schema that contains the title and description of each project, and a ticket mongoose schema that also contains the title of the project the ticket is relevant to as well as the name of the…
Not able to delete cascade as Model.remove() fuction is not available in mongoose. using findByIdAndDelete is not invoking the middleware: BootcampSchema.pre('remove',async function(next){ //before deleting the doc console.log(`courses being removed from bootcamp ${this._id}`); await this.model('Course').deleteMany({bootcamp:this._id}); next(); }); tried different delete methods…
How to fix this error ? Here is HotelRoom Module const mongoose = require('mongoose'); const Schema = mongoose.Schema; const HotelRoomSchema = new Schema({ name : { type : String, require : true }, numberofRooms : { type : Number, require…
app.post('/contactForm',function(req,res){ Contact.create({ name: req.body.name, phone: req.body.phone }, function(err, newContact){ if(err){ console.log(err, 'error in connectiong'); return; } console.log("*******", newContact); return res.redirect('back'); }) }) /home/ganesh/Web Dev/CN Web Dev/HTML/basics/Nodejs Workspace/contact_list/node_modules/mongoose/lib/model.js:2771 throw new MongooseError('Model.create() no longer accepts a callback');
I got a few documents in mongoose that looks something like this: [ { _id = "...", name = "abc123", colors = [1, 2, 3] }, { _id = "...", name = "def431", colors = [4, 2, 1] }, {…