This document discusses LoopBack, an API framework for Node.js that is based on Express. It provides an overview of what needs to be installed to use LoopBack, including Node.js, VS Code, an API testing client, and MySQL. It then discusses LoopBack's core functionality and modules for modeling data, application initialization, middleware execution, connecting to data sources, integration, and client SDKs. It also covers how to create a LoopBack application, define models and relationships, connect models to data sources, and implement user authentication and access control.

1. by
Fahmi Abdul Latip
Up and running

2. What need to be installed
• NodeJS v8.x LTS
• VS Code - https://code.visualstudio.com/
• Insomnia REST client - https://insomnia.rest/
• Loopback CLI
 [sudo] npm install -g loopback-cli@latest
• MySQL Database v5.6 or higher
• HeidiSQL / PHPMyAdmin / Sequel Pro

3. Loop what? Let’s talk in Express
• The Node.js API Framework.
• One of the framework that based from the
famous web JavaScript framework, ExpressJS.
• Express is a minimal and flexible Node.js web
application framework that provides a robust set
of features for web and mobile applications.
• Comply with Open API specification mostly
• http://nodeframework.com/index.html#rest-api

4. The Core

5. Total Framework

6. Framework Modules
Category Description Use to… Modules
Models Model and API
server
Dynamically mock-up models and expose them
as APIs without worrying about persisting.
loopback
Abstraction Model data
abstraction to
physical
persistence
Connect to multiple data sources or services and
get back an abstracted model with CRUD
capabilities independent of backing data source.
loopback-datasource-juggler
Initialization Application
initialization
Configure data sources, customize models,
configure models and attach them to data
sources; Configure application settings and run
custom boot scripts.
loopback-boot
Sequencing Middleware
execution
Configure middleware to be executed at various
points during application lifecycle.
loopback-phase
Data RDBMS and
noSQL physical
data sources
Enable connections to RDBMS and noSQL data
sources and get back an abstracted model.
•loopback-connector-mongodb
•loopback-connector-mysql
•loopback-connector-
postgresql
•loopback-connector-msssql
•loopback-connector-oracle
•Many others…
Integration General system
connectors
Connect to an existing system that expose APIs
through common enterprise and web interfaces
•loopback-connector-rest
•loopback-connector-soap
Components Add-ons to core
LoopBack
Integrate with pre-built services packaged into
components.
•loopback-component-push
•loopback-component-storage
•loopback-component-passport
Clients Client SDKs Develop client app using native platform objects
(iOS, Android, AngularJS) that interact with
LoopBack APIs via REST.
•loopback-sdk-ios
•loopback-sdk-android
•loopback-sdk-angular

7. Data Sources and Connectors

8. Create New “lb app”

9. __dirname structure

10. Create Persistence Model

11. Run the explorer…
http://loopback.io/doc/en/lb3/Use-API-
Explorer.html

12. Hooking up to real Datasource

13. Auto-migrate / Auto-update
'use strict';
module.exports = function(app) {
app.dataSources.<ds name>.autoupdate(‘<modelname>’, err => {
if (err) throw err;
});
};

14. Establishing relationship
• lb relation
 1 to 1
 1 to many
 Many to many
• Through table

15. User based model
• Build-in model in framework
• Basic authentication, ACL and AccessToken
ready

16. Access Control List