November 2018
Beginner
132 pages
2h 57m
English
Content preview from Server Side development with Node.js and Koa.js Quick Start Guide
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Creating data models
To communicate with our database, we need to define a data model for the contacts. Mongoose models serve as wrappers around schema definitions. A Mongoose schema defines the object structure, constraints, default values, and so on. Models are responsible for CRUD operations for an object with the underlying database.
To create a simple data model, let's create a Contact.js file in the models folder, and insert the following code into it:
// ./models/Contact.jsconst Koa = require('koa');const app = new Koa();const mongoose = require('mongoose');mongoose.connect( 'mongodb://localhost:27017/koa-contact', { useNewUrlParser: true });const db = mongoose.connection;db.on('error', error => { throw new Error(`error connecting ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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