mongoose-populate

问题 I've used this article as reference, but I guess I have screwed something up. I want to deep populate the model Cart: var CartSchema = new Schema({ products: [{ product: { type: Schema.ObjectId, ref : 'Product' }, quantity: { type: Number, default: 1} }], totalItems: { type: Number, default: 0}, message: { type: String }, client: { type : Schema.ObjectId, ref : 'User' }, time: { type: Date, default: new Date()}, session: { type: String } }); So I get product.addons and product.description

问题 This is the first model. It's located in the folder called models/user.js 'use strict' var mongoose = require('mongoose'); var Schema = mongoose.Schema; var UserSchema = Schema({ publications: [{ description: String, categories: [{ type: Schema.Types.ObjectId, ref: 'Category.subcategories' }] }] The model category. It's located in the folder called models/category.js 'use strict' var mongoose = require('mongoose'); var Schema = mongoose.Schema; var CategorySchema = Schema({ name: String,

问题 Running into a CastError in Mongoose when populating nested ObjectId references (value {} ) that are apparently valid , to the extent that they're not blocked when saving to schema. Interested in resolving this on the server-side to prevent malformed data in future, however, I understand not saving these values from the client would be a good idea. The fact that an empty object can be saved to a Mongoose schema with type: mongoose.Schema.Types.ObjectId and later throws a CastError using

问题 I have a Mongoose Schema (Appointment) with two ref fields (sender and receiver). Both referencing the same Schema (User). I am trying to populate these two fields using mongoose-paginate plugin. The Appointment Schema snippet. var paginate = require('mongoose-paginate'); var AppointmentSchema = new Schema({ dateCreated: {type: Date, default: Date.now}, sender: {type: ObjectId, ref: 'User'}, receiver: {type: ObjectId, ref: 'User'}, message: String, ......................... AppointmentSchema

问题 Consider documents that contain an arrays of ID of another collection, how can I find documents applying a filter based on the related collection using mongoose? I can't find my error Installation.aggregate( [ // Stage 1 { $lookup: { from: "users", localField: "_id", foreignField: "_id", as: "Users" } }, // Stage 2 { $unwind: { path: "$Users" } }, // Stage 3 { $match: {"Users.Email1" : "test@test.com"} }, { $sort: { _id: -1 } }, { $limit: 10 } ] ,function (err, installations) { console.log

问题 I have a collection of products, and another on the reposition of stock of the product. What I'm looking for is that when I get the products, all the replenishment dates and the new stock appear, something like this: { "ok": true, "producto": { "repo": [ { "_id": "5ac643ab88b5a132384f7758", "restock": 22, "date": "2018-03-04T03:00:00.000Z", "producto": "5ac6433588b5a132384f7757", "__v": 0 }, { "_id": "5ac6470079b67f39985ffe3c", "restock": 44, "date": "2018-04-04T03:00:00.000Z", "producto":

问题 I have a collection of products, and another on the reposition of stock of the product. What I'm looking for is that when I get the products, all the replenishment dates and the new stock appear, something like this: { "ok": true, "producto": { "repo": [ { "_id": "5ac643ab88b5a132384f7758", "restock": 22, "date": "2018-03-04T03:00:00.000Z", "producto": "5ac6433588b5a132384f7757", "__v": 0 }, { "_id": "5ac6470079b67f39985ffe3c", "restock": 44, "date": "2018-04-04T03:00:00.000Z", "producto":

问题 The structure of the project is structure The main file is index.js that is located in the main directory. This one has 'use strict' var mongoose = require('mongoose'); var app = require('./app'); var port = process.env.port || 3000; mongoose.connect('mongodb://localhost:27017/changeProducts',(err,res) =>{ if(err){ throw err; }else{ console.log("Base de datos funcionando correctamente.."); app.listen(port, function(){ console.log('Servidor nodejs corriendo(app.listen)... '); }); } }); The

问题 Let's borrow the excellent example from scaryguy with modification as below: Project Group Schema: var ProjectGroupSchema = new Schema({ projectGroupId : String, title : String }); Project Schema: var ProjectSchema = new Schema({ title : {type : String, default : '', required : true}, group : {type: String, ref: 'ProjectGroup' }, subscribers : [{type: String, ref: 'User' }] }); User Schema: var UserSchema = new Schema({ userId : {type: String, require: true}, firstName : {type: String,

问题 I am trying to get a specific data model after I run an aggregate pipeline followed by populate but I am falling just short of it. The desired result in the end is the following: [ { _accountId: "5beee0966d17bc42501f1234", name: "Company Name 1", contactEmail: "email1@email.com", contactName: "contact Name 1" reason: "Warranties", total: 1152, lineItems: [ { _id: "5beee0966d17bc42501f5086", jobsiteAddress: "1234 Street Southwest Sunnyville, Wyoming 12345", warrantyFee: 384 }, { _id: