Web Application Development with MEAN

The Contact module

This module will hold all the necessary files to manage contacts. As we discussed earlier, we are grouping our files by context, related to their domain. The starting point of our module will be the data layer, which means we'll start implementing the necessary service.

Contact service

Our contact service will have basic CRUD operations and Observable streams to subscribe to. This implementation will use the backend API built using Node.js and Express, but it can be converted anytime to a WebSocket-based API with little effort.

Create a new service file called contact-manager/src/contact/contact.service.ts and add the following code:

import { Injectable } from 'angular2/core'; import { Response, Headers } from 'angular2/http'; import ...