Sample RESTful service for use with Angular 2:
import { Injectable } from '@angular/core';
import { Http, Response, Headers } from '@angular/http';
import 'rxjs/add/operator/map'
import { Observable } from 'rxjs/Observable';
/*
database User table structure:
ID INTEGER NOT NULL, AUTOINCREMENT
NAME VARCHAR(50) NOT NULL
PHONE VARCHAR(20) NOT NULL
*/
export class User {
public id:number;
public name:string;
public phone:string;
}
@Injectable()
export class UserService {
private actionUrl: string;
private headers: Headers;
//
// sample url for a web service ==> "http://somesite.com/user/"
//
constructor(private http: Http, url:string) {
this.actionUrl = url;
this.headers = new Headers();
this.headers.append('Content-Type', 'application/json');
this.headers.append('Accept', 'application/json');
}
public GetUsers = (): Observable<Response> => {
return this.http.get(this.actionUrl).map(res => res.json());
}
public GetUser = (id: number): Observable<Response> => {
return this.http.get(this.actionUrl + id).map(res => res.json());
}
public InsertUser = (user: User): Observable<Response> => {
var toAdd = JSON.stringify({ User: user });
return this.http.post(this.actionUrl, toAdd,
{ headers: this.headers }).map(res => res.json());
}
public UpdateUser = (id: number, itemToUpdate: User): Observable<Response> => {
return this.http.put(this.actionUrl + id, JSON.stringify(itemToUpdate),
{ headers: this.headers }).map(res => res.json());
}
public DeleteUser = (id: number): Observable<Response> => {
return this.http.delete(this.actionUrl + id);
}
}