import { Component, OnInit } from '@angular/core';
import { Validators } from '@angular/common';
import { REACTIVE_FORM_DIRECTIVES, FormGroup, FormArray, FormBuilder } from '@angular/forms';
import { Customer } from './customer.interface';

@Component({
    moduleId: module.id,
    selector: 'app-root',
    templateUrl: 'app.component.html',
    directives: [REACTIVE_FORM_DIRECTIVES]
})
export class AppComponent implements OnInit {
    public myForm: FormGroup;

    constructor(private _fb: FormBuilder) { }

    ngOnInit() {
        this.myForm = this._fb.group({
            name: ['', [Validators.required, Validators.minLength(5)]],
            addresses: this._fb.array([
                this.initAddress(),
            ])
        });
    }

    initAddress() {
        return this._fb.group({
            street: ['', Validators.required],
            postcode: ['']
        });
    }

    addAddress() {
        const control = <FormArray>this.myForm.controls['addresses'];
        control.push(this.initAddress());
    }

    removeAddress(i: number) {
        const control = <FormArray>this.myForm.controls['addresses'];
        control.removeAt(i);
    }

    save(model: Customer) {
        // call API to save
        // ...
        console.log(model);
    }
}
import { bootstrap }    from '@angular/platform-browser-dynamic';
import { disableDeprecatedForms, provideForms } from '@angular/forms';

import { AppComponent } from './app.component';

bootstrap(AppComponent, [
  disableDeprecatedForms(),
  provideForms()
 ])
 .catch((err: any) => console.error(err));


/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
.margin-20 {
  margin-top: 20px;
  margin-bottom: 20px;
}
<!DOCTYPE html>
<html>
  <head>
    <title>Hero Form</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/css/bootstrap.min.css">
    <link rel="stylesheet" href="styles.css">

    <!-- Polyfill(s) for older browsers -->
    <script src="https://npmcdn.com/core-js/client/shim.min.js"></script>

    <script src="https://npmcdn.com/zone.js@0.6.12?main=browser"></script>
    <script src="https://npmcdn.com/reflect-metadata@0.1.3"></script>
    <script src="https://npmcdn.com/systemjs@0.19.27/dist/system.src.js"></script>

    <script src="systemjs.config.js"></script>
    <script>
      System.import('app').catch(function(err){ console.error(err); });
    </script>
  </head>

  <body>
    <app-root>Loading...</app-root>
  </body>

</html>


<!-- 
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->
/**
 * PLUNKER VERSION (based on systemjs.config.js in angular.io)
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(function(global) {

  var ngVer = '@2.0.0-rc.4'; // lock in the angular package version; do not let it float to current!
  var routerVer = '@3.0.0-beta.1'; // lock router version
  var formsVer = '@0.2.0'; // lock forms version
  var routerDeprecatedVer = '@2.0.0-rc.2'; // temporarily until we update all the guides

  //map tells the System loader where to look for things
  var  map = {
    'app':                        'app',

    '@angular':                   'https://npmcdn.com/@angular', // sufficient if we didn't pin the version
    '@angular/router':            'https://npmcdn.com/@angular/router' + routerVer,
    '@angular/forms':             'https://npmcdn.com/@angular/forms' + formsVer,
    '@angular/router-deprecated': 'https://npmcdn.com/@angular/router-deprecated' + routerDeprecatedVer,
    'angular2-in-memory-web-api': 'https://npmcdn.com/angular2-in-memory-web-api', // get latest
    'rxjs':                       'https://npmcdn.com/rxjs@5.0.0-beta.6',
    'ts':                         'https://npmcdn.com/plugin-typescript@4.0.10/lib/plugin.js',
    'typescript':                 'https://npmcdn.com/typescript@1.9.0-dev.20160409/lib/typescript.js',
 };

  //packages tells the System loader how to load when no filename and/or no extension
  var packages = {
    'app':                        { main: 'main.ts',  defaultExtension: 'ts' },
    'rxjs':                       { defaultExtension: 'js' },
    'angular2-in-memory-web-api': { main: 'index.js', defaultExtension: 'js' },
  };

  var ngPackageNames = [
    'common',
    'compiler',
    'core',
    'http',
    'platform-browser',
    'platform-browser-dynamic',
    'upgrade',
  ];

  // Add map entries for each angular package
  // only because we're pinning the version with `ngVer`.
  ngPackageNames.forEach(function(pkgName) {
    map['@angular/'+pkgName] = 'https://npmcdn.com/@angular/' + pkgName + ngVer;
  });

  // Add package entries for angular packages
  ngPackageNames.forEach(function(pkgName) {

    // Bundled (~40 requests):
    packages['@angular/'+pkgName] = { main: '/bundles/' + pkgName + '.umd.js', defaultExtension: 'js' };

    // Individual files (~300 requests):
    //packages['@angular/'+pkgName] = { main: 'index.js', defaultExtension: 'js' };
  });

  // No umd for router yet
  packages['@angular/router'] = { main: 'index.js', defaultExtension: 'js' };

  // Forms not on rc yet
  packages['@angular/forms'] = { main: 'index.js', defaultExtension: 'js' };

  // Temporarily until we update the guides
  packages['@angular/router-deprecated'] = { main: '/bundles/router-deprecated' + '.umd.js', defaultExtension: 'js' };

  var config = {
    // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
    transpiler: 'ts',
    typescriptOptions: {
      tsconfig: true
    },
    meta: {
      'typescript': {
        "exports": "ts"
      }
    },
    map: map,
    packages: packages
  };

  System.config(config);

})(this);


/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true
  }
}
export interface Customer {
    name: string;
    addresses: Address[];
}

export interface Address {
    street: string;
    postcode: string;
}
<div class="container">
  <div class="row">
    <div class="col-xs-12">
      <div class="margin-20">
        <h4>Add customer</h4>
      </div>
      <form [formGroup]="myForm" novalidate (ngSubmit)="save(myForm)">
        <div class="form-group">
          <label>Name</label>
          <input type="text" class="form-control" formControlName="name">
          <small *ngIf="!myForm.controls.name.valid" class="text-danger">
              Name is required (minimum 5 characters).
            </small>
        </div>
        <!--addresses-->
        <div formArrayName="addresses">
          <div *ngFor="let address of myForm.controls.addresses.controls; let i=index" class="panel panel-default">
            <div class="panel-heading">
              <span>Address {{i + 1}}</span>
              <span class="glyphicon glyphicon-remove pull-right" *ngIf="myForm.controls.addresses.controls.length > 1" (click)="removeAddress(i)"></span>
            </div>
            <div class="panel-body" [formGroupName]="i">
              <div class="form-group col-xs-6">
                <label>street</label>
                <input type="text" class="form-control" formControlName="street">
                <small [hidden]="myForm.controls.addresses.controls[i].controls.street.valid" class="text-danger">
                    Street is required
                </small>
              </div>
              <div class="form-group col-xs-6">
                <label>postcode</label>
                <input type="text" class="form-control" formControlName="postcode">
              </div>
            </div>
          </div>
        </div>

        <div class="margin-20">
          <a (click)="addAddress()" style="cursor: default">
            Add another address +
          </a>
        </div>

        <div class="margin-20">
          <button type="submit" class="btn btn-primary pull-right" [disabled]="!myForm.valid">Submit</button>
        </div>
        <div class="clearfix"></div>

        <div class="margin-20">
          <div>myForm details:-</div>
          <pre>Is myForm valid?: <br>{{myForm.valid | json}}</pre>
          <pre>form value: <br>{{myForm.value | json}}</pre>
        </div>
      </form>
    </div>
  </div>
</div>