Find one or create with Mongoose

As per the Mongoose docs: As per previous SO answer Model.findByIdAndUpdate() “Finds a matching document, updates it according to the update arg, passing any options, and returns the found document (if any) to the callback.” In the options set upsert to true: upsert: bool – creates the object if it doesn’t exist. defaults to false. … Read more

Mongoose document references with a one-to-many relationship

Refer to population, here extract an example from Mongoose. var mongoose = require(‘mongoose’) , Schema = mongoose.Schema var personSchema = Schema({ _id : Schema.Types.ObjectId, name : String, age : Number, stories : [{ type: Schema.Types.ObjectId, ref: ‘Story’ }] }); var storySchema = Schema({ _creator : { type: Schema.Types.ObjectId, ref: ‘Person’ }, title : String, fans … Read more

Nested objects in mongoose schemas

const mongoose = require(“mongoose”); // Make connection // https://mongoosejs.com/docs/connections.html#error-handling mongoose.connect(“mongodb://localhost:27017/test”, { useNewUrlParser: true, useUnifiedTopology: true, }); // Define schema // https://mongoosejs.com/docs/models.html#compiling const AddressSchema = mongoose.Schema({ city: String, street: String, houseNumber: String, }); const ContactInfoSchema = mongoose.Schema({ tel: [Number], email: [String], address: { type: AddressSchema, required: true, }, }); const CustomerSchema = mongoose.Schema({ firstName: String, lastName: … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)