Mongoose Study Notes

1 Installing the Moogoose module, attaching the--save parameter add the package information to the Package.json file

NPM Install--save Moogoose

2 Load the Moogoose module and connect to the database

var mongoose = require (' Mongoose '); // Mongoose.connect (' Mongodb://mongod address IP (ipdress)/database name to be connected (databasename) '); Mongoose.connect (' mongodb://localhost/news ');

3 Modeling (structure)

var newsschema = Mongoose. Schmea ({    title:string    type:numer    category:array    ...});

4 Convert schema compilation to modal (at this point the modal is a class)

Newsmodel = Mongoose.model (' News ', Newsschema)

5 We can instantiate this class and do some work

var New Newsmodel ({title: "This is a title", "type": 1, "category": [{category_id: "1", "Category_name": "Domestic"   // This is a title

We can also add methods to the schema and add methods that need to be compiled into modal

function () {console.log (this = Mongoose.model (' News ', Newsschema); // instantiate and Invoke var New Newsmodel ({title: "This is a title", "type": 1, "category": [{category_id: "1", "Category_name": "Domestic"   //  output: It's a method to show the Title:this is a title

6 in front of the words, we are talking to the schema to add methods, after compiling, to create a modal to instantiate, since it is a database, save, query and other operations.

var New Newsmodel ({title: "This is a title", "type": 1, "category": [{category_id: "1", "Category_name": "Domestic"}]}) ; News.save (function(error,result) {   if(error) {     console.log (error);       } Else {       Console.log (result);   }});

Mongoose Study Notes