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Model

What is a model​

  • Models are constructors compiled from Schema definitions
  • Models are responsible for creating and reading documents from the underlying MongoDB database
  • An instance of a model is called a document

Create a Schema first​

const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mydb')
	.then(()=>console.log('Connected to MongoDB...');)
	.catch(err=>console.log('Failed to connect MongoDB...',error));

const courseSchema = new mongoose.Schema({
	new:String,
	author:String,
	tags:[String],
	date{type:Date,default:Date.now},
	isPublished:Boolean,
	price:Number
});

Create a model​

  • The first argument is the singular name of the collection your model is for
  • Mongoose automatically looks for the plural, lowercased version of your model name
const Course = mongoose.model('course',courseSchema);

Create an instance of the model​

const course = new Course({
	name:'NodeJS Course',
	author:'James',
	tags:['node','backend'],
	isPublished:true
});

Save document to database​

const createCourse=async()=>{
  const course = new Course({
	name:'NodeJS Course',
	author:'James',
	tags:['node','backend'],
	isPublished:true
  });
  const result = await course.save();	
  console.log(result);
}
createCourse();