docs: add new Reactive Forms guide (#24578)

PR Close #24578

aio/content/examples/reactive-forms/debug.log

@@ -1,3 +0,0 @@
-[1030/162525.401:ERROR:process_reader_win.cc(123)] NtOpenThread: {Acceso denegado} Un proceso ha solicitado acceso a un objeto, pero no se le han concedido esos derechos de acceso.  (0xc0000022)
-[1030/162525.402:ERROR:exception_snapshot_win.cc(87)] thread ID 26896 not found in process
-[1030/162525.402:WARNING:crash_report_exception_handler.cc(62)] ProcessSnapshotWin::Initialize failed

aio/content/examples/reactive-forms/final.stackblitz.json

@@ -1,24 +0,0 @@
-{
-  "description": "Angular Reactive Forms (final)",
-  "files":[
-    "src/styles.css",
-
-    "src/app/app.component.ts",
-    "src/app/app.component.html",
-    "src/app/app.component.css",
-    "src/app/app.module.ts",
-    "src/app/data-model.ts",
-    "src/app/hero.service.ts",
-    "src/app/hero-detail/hero-detail.component.html",
-    "src/app/hero-detail/hero-detail.component.ts",
-    "src/app/hero-detail/hero-detail.component.css",
-    "src/app/hero-list/hero-list.component.html",
-    "src/app/hero-list/hero-list.component.ts",
-    "src/app/hero-list/hero-list.component.css",
-
-    "src/main-final.ts",
-    "src/index-final.html"
-  ],
-  "main": "src/index-final.html",
-  "tags": ["reactive", "forms"]
-}

aio/content/examples/reactive-forms/src/app/app.component.1.html

@@ -1,4 +1,10 @@
-<div class="container">
+<!-- #docplaster -->
-  <h1>Reactive Forms</h1>
+<h1>Reactive Forms</h1>
-  <app-hero-detail></app-hero-detail>
+
-</div>
+<!-- #docregion app-name-editor-->
+<app-name-editor></app-name-editor>
+<!-- #enddocregion app-name-editor-->
+
+<!-- #docregion app-profile-editor -->
+<app-profile-editor></app-profile-editor>
+<!-- #enddocregion app-profile-editor -->

aio/content/examples/reactive-forms/src/app/app.component.html

@@ -1,4 +1,17 @@
-<div class="container">
+<!-- #docplaster -->
-  <h1>Reactive Forms</h1>
+<!-- #docregion app-name-editor -->
-  <app-hero-list></app-hero-list>
+<h1>Reactive Forms</h1>
-</div>
+
+<!-- #enddocregion app-name-editor -->
+<nav>
+  <a (click)="toggleEditor('name')">Name Editor</a>
+  <a (click)="toggleEditor('profile')">Profile Editor</a>
+</nav>
+
+<!-- #docregion app-name-editor -->
+<app-name-editor *ngIf="showNameEditor"></app-name-editor>
+<!-- #enddocregion app-name-editor -->
+
+<!-- #docregion app-profile-editor -->
+<app-profile-editor *ngIf="showProfileEditor"></app-profile-editor>
+<!-- #enddocregion app-profile-editor -->

aio/content/examples/reactive-forms/src/app/app.component.spec.ts

@@ -0,0 +1,27 @@
+import { TestBed, async } from '@angular/core/testing';
+import { AppComponent } from './app.component';
+describe('AppComponent', () => {
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [
+        AppComponent
+      ],
+    }).compileComponents();
+  }));
+  it('should create the app', async(() => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.debugElement.componentInstance;
+    expect(app).toBeTruthy();
+  }));
+  it(`should have as title 'app'`, async(() => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.debugElement.componentInstance;
+    expect(app.title).toEqual('app');
+  }));
+  it('should render title in a h1 tag', async(() => {
+    const fixture = TestBed.createComponent(AppComponent);
+    fixture.detectChanges();
+    const compiled = fixture.debugElement.nativeElement;
+    expect(compiled.querySelector('h1').textContent).toContain('Welcome to reactive-forms!');
+  }));
+});

aio/content/examples/reactive-forms/src/app/app.component.ts

@@ -1,9 +1,24 @@
-// #docregion
 import { Component } from '@angular/core';
 
+export type EditorType = 'name' | 'profile';
+
 @Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.css']
 })
-export class AppComponent { }
+export class AppComponent {
+  editor: EditorType = 'name';
+
+  get showNameEditor() {
+    return this.editor === 'name';
+  }
+
+  get showProfileEditor() {
+    return this.editor === 'profile';
+  }
+
+  toggleEditor(type: EditorType) {
+    this.editor = type;
+  }
+}

aio/content/examples/reactive-forms/src/app/app.module.ts

@@ -1,45 +1,34 @@
 // #docplaster
-// #docregion
-// #docregion v1
-import { NgModule }            from '@angular/core';
 import { BrowserModule } from '@angular/platform-browser';
-import { ReactiveFormsModule } from '@angular/forms';  // <-- #1 import module
+import { NgModule } from '@angular/core';
+// #docregion imports
+import { ReactiveFormsModule } from '@angular/forms';
 
+// #enddocregion imports
 import { AppComponent } from './app.component';
-import { HeroDetailComponent } from './hero-detail/hero-detail.component';
+import { NameEditorComponent } from './name-editor/name-editor.component';
-// #enddocregion v1
+import { ProfileEditorComponent } from './profile-editor/profile-editor.component';
-// #docregion hero-service-list
-// add JavaScript imports
-import { HeroListComponent }   from './hero-list/hero-list.component';
-import { HeroService }         from './hero.service';
-// #docregion v1
 
+// #docregion imports
 @NgModule({
+// #enddocregion imports
   declarations: [
     AppComponent,
-    HeroDetailComponent,
+    NameEditorComponent,
-// #enddocregion v1
+    ProfileEditorComponent
-    HeroListComponent // <--declare HeroListComponent
-// #docregion v1
   ],
- // #enddocregion hero-service-list
+// #docregion imports
   imports: [
+// #enddocregion imports
     BrowserModule,
-    ReactiveFormsModule // <-- #2 add to @NgModule imports
+// #docregion imports
+    // other imports ...
+    ReactiveFormsModule
   ],
-  // #enddocregion v1
+// #enddocregion imports
-  // export for the DemoModule
+  providers: [],
-  // #docregion hero-service-list
+  bootstrap: [AppComponent]
-  // ...
+// #docregion imports
-  exports: [
-    AppComponent,
-    HeroDetailComponent,
-    HeroListComponent // <-- export HeroListComponent
-  ],
-  providers: [ HeroService ], // <-- provide HeroService
-// #enddocregion hero-service-list
-// #docregion v1
-  bootstrap: [ AppComponent ]
 })
 export class AppModule { }
-// #enddocregion v1
+// #enddocregion imports

aio/content/examples/reactive-forms/src/app/data-model.ts

@@ -1,40 +0,0 @@
-// #docregion
-// #docregion model-classes
-export class Hero {
-  id = 0;
-  name = '';
-  addresses: Address[];
-}
-
-export class Address {
-  street = '';
-  city   = '';
-  state  = '';
-  zip    = '';
-}
-// #enddocregion model-classes
-
-export const heroes: Hero[] = [
-  {
-    id: 1,
-    name: 'Whirlwind',
-    addresses: [
-      {street: '123 Main',  city: 'Anywhere', state: 'CA',  zip: '94801'},
-      {street: '456 Maple', city: 'Somewhere', state: 'VA', zip: '23226'},
-    ]
-  },
-  {
-    id: 2,
-    name: 'Bombastic',
-    addresses: [
-      {street: '789 Elm',  city: 'Smallville', state: 'OH',  zip: '04501'},
-    ]
-  },
-  {
-    id: 3,
-    name: 'Magneta',
-    addresses: [ ]
-  },
-];
-
-export const states = ['CA', 'MD', 'OH', 'VA'];

aio/content/examples/reactive-forms/src/app/demo.component.html

@@ -1,40 +0,0 @@
-<div class="container">
-<h1>Reactive Forms</h1>
-<h4><i>Pick a demo:</i>
-  <select [selectedIndex]="demo - 1" (change)="selectDemo($event.target.selectedIndex)">
-    <option *ngFor="let demo of demos">{{demo}}</option>
-  </select>
-</h4>
-
-<hr>
-
-<div class="demo">
-  <app-hero-list *ngIf="demo===final"></app-hero-list>
-  <app-hero-detail-1 *ngIf="demo===1"></app-hero-detail-1>
-  <app-hero-detail-2 *ngIf="demo===2"></app-hero-detail-2>
-  <app-hero-detail-3 *ngIf="demo===3"></app-hero-detail-3>
-  <app-hero-detail-4 *ngIf="demo===4"></app-hero-detail-4>
-  <app-hero-detail-5 *ngIf="demo===5"></app-hero-detail-5>
-
-  <div *ngIf="demo >= 6 && demo !== final" >
-
-    <h3 *ngIf="isLoading"><i>Loading heroes ... </i></h3>
-    <h3 *ngIf="!isLoading">Select a hero:</h3>
-
-    <nav>
-      <button (click)="getHeroes()" class="btn btn-primary">Refresh</button>
-      <a *ngFor="let hero of heroes | async" (click)="select(hero)">{{hero.name}}</a>
-    </nav>
-
-    <div *ngIf="selectedHero">
-      <hr>
-      <h2>Hero Detail</h2>
-      <h3>Editing: {{selectedHero.name}}</h3>
-      <app-hero-detail-6 [hero]=selectedHero *ngIf="demo===6"></app-hero-detail-6>
-      <app-hero-detail-7 [hero]=selectedHero *ngIf="demo===7"></app-hero-detail-7>
-      <app-hero-detail-8 [hero]=selectedHero *ngIf="demo===8"></app-hero-detail-8>
-
-    </div>
-  </div>
-</div>
-</div>

aio/content/examples/reactive-forms/src/app/demo.component.ts

@@ -1,49 +0,0 @@
-/* tslint:disable:member-ordering */
-import { Component }  from '@angular/core';
-import { Observable } from 'rxjs';
-import { finalize } from 'rxjs/operators';
-
-import { Hero }        from './data-model';
-import { HeroService } from './hero.service';
-
-@Component({
-  selector: 'app-root',
-  templateUrl: './demo.component.html'
-})
-export class DemoComponent {
-
-  demos: string[] = [
-    'Just a FormControl',
-    'FormControl in a FormGroup',
-    'Simple FormBuilder group',
-    'Group with multiple controls',
-    'Nested FormBuilder group',
-    'PatchValue',
-    'SetValue',
-    'FormArray',
-    'Final'].map(n => n + ' Demo');
-
-  final = this.demos.length;
-  demo = this.final; // current demo
-
-  heroes: Observable<Hero[]>;
-  isLoading = false;
-  selectedHero: Hero;
-
-  constructor(private heroService: HeroService) { }
-
-  getHeroes() {
-    this.isLoading = true;
-    this.heroes = this.heroService.getHeroes().pipe(
-                      finalize(() => this.isLoading = false)
-    );
-    this.selectedHero = undefined;
-  }
-
-  select(hero: Hero) { this.selectedHero = hero; }
-
-  selectDemo(demo: number) {
-    this.demo = demo + 1;
-    this.getHeroes();
-  }
-}

aio/content/examples/reactive-forms/src/app/demo.module.ts

@@ -1,33 +0,0 @@
-import { NgModule }             from '@angular/core';
-import { BrowserModule }        from '@angular/platform-browser';
-import { ReactiveFormsModule }  from '@angular/forms';
-
-import { AppModule }            from './app.module';
-import { DemoComponent }        from './demo.component';
-import { HeroDetailComponent1 } from './hero-detail/hero-detail-1.component';
-import { HeroDetailComponent2 } from './hero-detail/hero-detail-2.component';
-import { HeroDetailComponent3 } from './hero-detail/hero-detail-3.component';
-import { HeroDetailComponent4 } from './hero-detail/hero-detail-4.component';
-import { HeroDetailComponent5 } from './hero-detail/hero-detail-5.component';
-import { HeroDetailComponent6 } from './hero-detail/hero-detail-6.component';
-import { HeroDetailComponent7 } from './hero-detail/hero-detail-7.component';
-import { HeroDetailComponent8 } from './hero-detail/hero-detail-8.component';
-
-@NgModule({
-  imports: [
-    BrowserModule,
-    ReactiveFormsModule,
-    AppModule,
-  ],
-  declarations: [ DemoComponent,
-  HeroDetailComponent1,
-  HeroDetailComponent2,
-  HeroDetailComponent3,
-  HeroDetailComponent4,
-  HeroDetailComponent5,
-  HeroDetailComponent6,
-  HeroDetailComponent7,
-  HeroDetailComponent8],
-  bootstrap:    [ DemoComponent ]
-})
-export class DemoModule { }

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-1.component.html

@@ -1,8 +0,0 @@
-<!-- #docregion simple-control-->
-<h2>Hero Detail</h2>
-<h3><i>Just a FormControl</i></h3>
-<label class="center-block">Name:
-  <input class="form-control" [formControl]="name">
-</label>
-<!-- #enddocregion simple-control-->
-

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-1.component.ts

@@ -1,15 +0,0 @@
-/* tslint:disable:component-class-suffix */
-
-import { Component } from '@angular/core';
-// #docregion import
-import { FormControl } from '@angular/forms';
-// #enddocregion import
-
-@Component({
-  selector: 'app-hero-detail-1',
-  templateUrl: './hero-detail-1.component.html'
-})
-// #docregion v1
-export class HeroDetailComponent1 {
-  name = new FormControl();
-}

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-2.component.html

@@ -1,18 +0,0 @@
-<!-- #docregion basic-form-->
-<h2>Hero Detail</h2>
-<h3><i>FormControl in a FormGroup</i></h3>
-<form [formGroup]="heroForm">
-  <div class="form-group">
-    <label class="center-block">Name:
-      <input class="form-control" formControlName="name">
-    </label>
-  </div>
-</form>
-<!-- #enddocregion basic-form-->
-
-<!-- #docregion form-value-json -->
-<p>Form value: {{ heroForm.value | json }}</p>
-<!-- #enddocregion form-value-json  -->
-
-
-

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-2.component.ts

@@ -1,17 +0,0 @@
-/* tslint:disable:component-class-suffix */
-// #docregion imports
-import { Component }              from '@angular/core';
-import { FormControl, FormGroup } from '@angular/forms';
-// #enddocregion imports
-
-@Component({
-  selector: 'app-hero-detail-2',
-  templateUrl: './hero-detail-2.component.html'
-})
-// #docregion v2
-export class HeroDetailComponent2 {
-  heroForm = new FormGroup ({
-    name: new FormControl()
-  });
-}
-// #enddocregion v2

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-3.component.html

@@ -1,16 +0,0 @@
-<!-- #docregion basic-form-->
-<h2>Hero Detail</h2>
-<h3><i>A FormGroup with a single FormControl using FormBuilder</i></h3>
-<form [formGroup]="heroForm">
-  <div class="form-group">
-    <label class="center-block">Name:
-      <input class="form-control" formControlName="name">
-    </label>
-  </div>
-</form>
-<!-- #enddocregion basic-form-->
-
-<!-- #docregion form-value-json -->
-<p>Form value: {{ heroForm.value | json }}</p>
-<p>Form status: {{ heroForm.status | json }}</p>
-<!-- #enddocregion form-value-json -->

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-3.component.ts

@@ -1,27 +0,0 @@
-/* tslint:disable:component-class-suffix */
-// #docregion imports
-import { Component }                          from '@angular/core';
-import { FormBuilder, FormGroup, Validators } from '@angular/forms';
-// #enddocregion imports
-
-@Component({
-  selector: 'app-hero-detail-3',
-  templateUrl: './hero-detail-3.component.html'
-})
-// #docregion v3
-export class HeroDetailComponent3 {
-  heroForm: FormGroup; // <--- heroForm is of type FormGroup
-
-  constructor(private fb: FormBuilder) { // <--- inject FormBuilder
-    this.createForm();
-  }
-
-  createForm() {
-    // #docregion required
-    this.heroForm = this.fb.group({
-      name: ['', Validators.required ],
-    });
-    // #enddocregion required
-  }
-}
-// #enddocregion v3

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-3a.component.ts

@@ -1,25 +0,0 @@
-/* tslint:disable:component-class-suffix */
-// #docregion imports
-import { Component }              from '@angular/core';
-import { FormBuilder, FormGroup } from '@angular/forms';
-// #enddocregion imports
-
-@Component({
-  selector: 'app-hero-detail-3',
-  templateUrl: './hero-detail-3.component.html'
-})
-// #docregion v3a
-export class HeroDetailComponent3 {
-  heroForm: FormGroup; // <--- heroForm is of type FormGroup
-
-  constructor(private fb: FormBuilder) { // <--- inject FormBuilder
-    this.createForm();
-  }
-
-  createForm() {
-    this.heroForm = this.fb.group({
-      name: '', // <--- the FormControl called "name"
-    });
-  }
-}
-// #enddocregion v3a

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-4.component.html

@@ -1,46 +0,0 @@
-<!-- #docregion -->
-<h2>Hero Detail</h2>
-<h3><i>A FormGroup with multiple FormControls</i></h3>
-<form [formGroup]="heroForm">
-  <div class="form-group">
-    <label class="center-block">Name:
-      <input class="form-control" formControlName="name">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">Street:
-      <input class="form-control" formControlName="street">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">City:
-      <input class="form-control" formControlName="city">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">State:
-      <select class="form-control" formControlName="state">
-          <option *ngFor="let state of states" [value]="state">{{state}}</option>
-      </select>
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">Zip Code:
-      <input class="form-control" formControlName="zip">
-    </label>
-  </div>
-  <div class="form-group radio">
-    <h4>Super power:</h4>
-    <label class="center-block"><input type="radio" formControlName="power" value="flight">Flight</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="x-ray vision">X-ray vision</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="strength">Strength</label>
-  </div>
-  <div class="checkbox">
-    <label class="center-block">
-      <input type="checkbox" formControlName="sidekick">I have a sidekick.
-    </label>
-  </div>
-</form>
-
-
-<p>Form value: {{ heroForm.value | json }}</p>

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-4.component.ts

@@ -1,34 +0,0 @@
-/* tslint:disable:component-class-suffix */
-// #docregion imports
-import { Component }                          from '@angular/core';
-import { FormBuilder, FormGroup, Validators } from '@angular/forms';
-
-import { states } from '../data-model';
-// #enddocregion imports
-
-@Component({
-  selector: 'app-hero-detail-4',
-  templateUrl: './hero-detail-4.component.html'
-})
-// #docregion v4
-export class HeroDetailComponent4 {
-  heroForm: FormGroup;
-  states = states;
-
-  constructor(private fb: FormBuilder) {
-    this.createForm();
-  }
-
-  createForm() {
-    this.heroForm = this.fb.group({
-      name: ['', Validators.required ],
-      street: '',
-      city: '',
-      state: '',
-      zip: '',
-      power: '',
-      sidekick: ''
-    });
-  }
-}
-// #enddocregion v4

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-5.component.html

@@ -1,56 +0,0 @@
-
-<form [formGroup]="heroForm">
-    <div class="form-group">
-      <label class="center-block">Name:
-        <input class="form-control" formControlName="name">
-      </label>
-    </div>
-<!-- #docregion add-group-->
-    <div formGroupName="address" class="well well-lg">
-      <h4>Secret Lair</h4>
-      <div class="form-group">
-        <label class="center-block">Street:
-          <input class="form-control" formControlName="street">
-        </label>
-      </div>
-      <div class="form-group">
-        <label class="center-block">City:
-          <input class="form-control" formControlName="city">
-        </label>
-      </div>
-      <div class="form-group">
-        <label class="center-block">State:
-          <select class="form-control" formControlName="state">
-            <option *ngFor="let state of states" [value]="state">{{state}}</option>
-          </select>
-        </label>
-      </div>
-      <div class="form-group">
-        <label class="center-block">Zip Code:
-          <input class="form-control" formControlName="zip">
-        </label>
-      </div>
-    </div>
-<!-- #enddocregion add-group-->
-    <div class="form-group radio">
-      <h4>Super power:</h4>
-      <label class="center-block"><input type="radio" formControlName="power" value="flight">Flight</label>
-      <label class="center-block"><input type="radio" formControlName="power" value="x-ray vision">X-ray vision</label>
-      <label class="center-block"><input type="radio" formControlName="power" value="strength">Strength</label>
-    </div>
-    <div class="checkbox">
-      <label class="center-block">
-        <input type="checkbox" formControlName="sidekick">I have a sidekick.
-      </label>
-    </div>
-</form>
-
-<p>heroForm value: {{ heroForm.value | json}}</p>
-<h4>Extra info for the curious:</h4>
-<!-- #docregion inspect-value -->
-<p>Name value: {{ heroForm.get('name').value }}</p>
-<!-- #enddocregion inspect-value -->
-
-<!-- #docregion inspect-child-control -->
-<p>Street value: {{ heroForm.get('address.street').value}}</p>
-<!-- #enddocregion inspect-child-control -->

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-5.component.ts

@@ -1,35 +0,0 @@
-/* tslint:disable:component-class-suffix */
-import { Component }                          from '@angular/core';
-import { FormBuilder, FormGroup, Validators } from '@angular/forms';
-
-import { states } from '../data-model';
-
-@Component({
-  selector: 'app-hero-detail-5',
-  templateUrl: './hero-detail-5.component.html'
-})
-// #docregion v5
-export class HeroDetailComponent5 {
-  heroForm: FormGroup;
-  states = states;
-
-  constructor(private fb: FormBuilder) {
-    this.createForm();
-  }
-
-  createForm() {
-    this.heroForm = this.fb.group({ // <-- the parent FormGroup
-      name: ['', Validators.required ],
-      address: this.fb.group({ // <-- the child FormGroup
-        street: '',
-        city: '',
-        state: '',
-        zip: ''
-      }),
-      power: '',
-      sidekick: ''
-    });
-  }
-}
-// #enddocregion v5
-

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-6.component.html

@@ -1,46 +0,0 @@
-<!-- #docregion -->
-<h2>Hero Detail</h2>
-<h3><i>PatchValue to initialize a value</i></h3>
-<form [formGroup]="heroForm">
-  <div class="form-group">
-    <label class="center-block">Name:
-      <input class="form-control" formControlName="name">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">Street:
-      <input class="form-control" formControlName="street">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">City:
-      <input class="form-control" formControlName="city">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">State:
-      <select class="form-control" formControlName="state">
-        <option *ngFor="let state of states" [value]="state">{{state}}</option>
-      </select>
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">Zip Code:
-      <input class="form-control" formControlName="zip">
-    </label>
-  </div>
-  <div class="form-group radio">
-    <h4>Super power:</h4>
-    <label class="center-block"><input type="radio" formControlName="power" value="flight">Flight</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="x-ray vision">X-ray vision</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="strength">Strength</label>
-  </div>
-  <div class="checkbox">
-    <label class="center-block">
-      <input type="checkbox" formControlName="sidekick">I have a sidekick.
-    </label>
-  </div>
-</form>
-
-
-<p>Form value: {{ heroForm.value | json }}</p>

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-6.component.ts

@@ -1,66 +0,0 @@
-/* tslint:disable:component-class-suffix */
-// #docregion import-input
-import { Component, Input, OnChanges }             from '@angular/core';
-// #enddocregion import-input
-import { FormBuilder, FormGroup, Validators }      from '@angular/forms';
-
-// #docregion import-hero
-import { Hero, states } from '../data-model';
-// #enddocregion import-hero
-
-////////// 6 ////////////////////
-
-@Component({
-  selector: 'app-hero-detail-6',
-  templateUrl: './hero-detail-5.component.html'
-})
-// #docregion v6
-export class HeroDetailComponent6 implements OnChanges {
-  // #docregion hero
-  @Input() hero: Hero;
-  // #enddocregion hero
-
-  heroForm: FormGroup;
-  states = states;
-
-  constructor(private fb: FormBuilder) {
-    this.createForm();
-  }
-
-  createForm() {
-    // #docregion hero-form-model
-    this.heroForm = this.fb.group({
-      name: ['', Validators.required ],
-      address: this.fb.group({
-        street: '',
-        city: '',
-        state: '',
-        zip: ''
-      }),
-      power: '',
-      sidekick: ''
-    });
-    // #enddocregion hero-form-model
-  }
-
-  // #docregion patch-value-on-changes
-  ngOnChanges() { // <-- call rebuildForm in ngOnChanges
-    this.rebuildForm();
-  }
-  // #enddocregion patch-value-on-changes
-
-  // #docregion patch-value-rebuildform
-  rebuildForm() { // <-- wrap patchValue in rebuildForm
-    this.heroForm.reset();
-    // #docregion patch-value
-    this.heroForm.patchValue({
-      name: this.hero.name
-    });
-    // #enddocregion patch-value
-  }
-  // #enddocregion patch-value-rebuildform
-}
-
-
-
-// #enddocregion v6

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-7.component.html

@@ -1,46 +0,0 @@
-<!-- #docregion -->
-<h2>Hero Detail</h2>
-<h3><i>A FormGroup with multiple FormControls</i></h3>
-<form [formGroup]="heroForm">
-  <div class="form-group">
-    <label class="center-block">Name:
-      <input class="form-control" formControlName="name">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">Street:
-      <input class="form-control" formControlName="street">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">City:
-      <input class="form-control" formControlName="city">
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">State:
-      <select class="form-control" formControlName="state">
-        <option *ngFor="let state of states" [value]="state">{{state}}</option>
-      </select>
-    </label>
-  </div>
-  <div class="form-group">
-    <label class="center-block">Zip Code:
-      <input class="form-control" formControlName="zip">
-    </label>
-  </div>
-  <div class="form-group radio">
-    <h4>Super power:</h4>
-    <label class="center-block"><input type="radio" formControlName="power" value="flight">Flight</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="x-ray vision">X-ray vision</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="strength">Strength</label>
-  </div>
-  <div class="checkbox">
-    <label class="center-block">
-      <input type="checkbox" formControlName="sidekick">I have a sidekick.
-    </label>
-  </div>
-</form>
-
-
-<p>Form value: {{ heroForm.value | json }}</p>

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-7.component.ts

@@ -1,68 +0,0 @@
-/* tslint:disable:component-class-suffix */
-// #docplaster
-// #docregion imports
-import { Component, Input, OnChanges }             from '@angular/core';
-import { FormBuilder, FormGroup, Validators }      from '@angular/forms';
-
-// #docregion import-address
-import { Address, Hero, states } from '../data-model';
-// #enddocregion import-address
-
-// #enddocregion imports
-
-@Component({
-  selector: 'app-hero-detail-7',
-  templateUrl: './hero-detail-5.component.html'
-})
-// #docregion v7
-export class HeroDetailComponent7 implements OnChanges {
-  @Input() hero: Hero;
-
-  heroForm: FormGroup;
-  states = states;
-
-  constructor(private fb: FormBuilder) {
-    this.createForm();
-  }
-
-  createForm() {
-    // #docregion address-form-group
-    this.heroForm = this.fb.group({
-      name: ['', Validators.required ],
-      address: this.fb.group(new Address()), // <-- a FormGroup with a new address
-      power: '',
-      sidekick: ''
-    });
-    // #enddocregion address-form-group
-  }
-
-  // #docregion ngOnChanges
-  ngOnChanges() {
-    this.rebuildForm();
-  }
-   // #enddocregion ngOnChanges
-
-    // #docregion rebuildForm
-  rebuildForm() {
-    this.heroForm.reset({
-      name: this.hero.name,
-      // #docregion set-value-address
-      address: this.hero.addresses[0] || new Address()
-      // #enddocregion set-value-address
-    });
-  }
-  // #enddocregion rebuildForm
-
-  /* First version of rebuildForm */
-  rebuildForm1() {
-    // #docregion reset
-    this.heroForm.reset();
-     // #enddocregion reset
-     // #docregion set-value
-     this.heroForm.setValue({
-      name:    this.hero.name,
-      address: this.hero.addresses[0] || new Address()
-   });
-    // #enddocregion set-value
-  }
-}

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-8.component.html

@@ -1,72 +0,0 @@
-<!-- #docplaster-->
-<h3><i>Using FormArray to add groups</i></h3>
-
-<form [formGroup]="heroForm">
-    <p>Form Changed: {{ heroForm.dirty }}</p>
-
-    <div class="form-group">
-      <label class="center-block">Name:
-        <input class="form-control" formControlName="name">
-      </label>
-    </div>
-    <!-- #docregion form-array-->
-    <!-- #docregion form-array-skeleton -->
-    <!-- #docregion form-array-name -->
-    <div formArrayName="secretLairs" class="well well-lg">
-    <!-- #enddocregion form-array-name -->
-      <div *ngFor="let address of secretLairs.controls; let i=index" [formGroupName]="i" >
-        <!-- The repeated address template -->
-    <!-- #enddocregion form-array-skeleton -->
-        <h4>Address #{{i + 1}}</h4>
-        <div style="margin-left: 1em;">
-          <div class="form-group">
-            <label class="center-block">Street:
-              <input class="form-control" formControlName="street">
-            </label>
-          </div>
-          <div class="form-group">
-            <label class="center-block">City:
-              <input class="form-control" formControlName="city">
-            </label>
-          </div>
-          <div class="form-group">
-            <label class="center-block">State:
-              <select class="form-control" formControlName="state">
-                <option *ngFor="let state of states" [value]="state">{{state}}</option>
-              </select>
-            </label>
-          </div>
-          <div class="form-group">
-            <label class="center-block">Zip Code:
-              <input class="form-control" formControlName="zip">
-            </label>
-          </div>
-        </div>
-        <br>
-        <!-- End of the repeated address template -->
-    <!-- #docregion form-array-skeleton -->
-      </div>
-    <!-- #enddocregion form-array-skeleton -->
-    <!-- #enddocregion form-array-->
-      <!-- #docregion add-lair -->
-      <button (click)="addLair()" type="button">Add a Secret Lair</button>
-      <!-- #enddocregion add-lair -->
-    <!-- #docregion form-array-->
-    <!-- #docregion form-array-skeleton -->
-    </div>
-    <!-- #enddocregion form-array-skeleton -->
-    <!-- #enddocregion form-array-->
-    <div class="form-group radio">
-        <h4>Super power:</h4>
-        <label class="center-block"><input type="radio" formControlName="power" value="flight">Flight</label>
-        <label class="center-block"><input type="radio" formControlName="power" value="x-ray vision">X-ray vision</label>
-        <label class="center-block"><input type="radio" formControlName="power" value="strength">Strength</label>
-      </div>
-      <div class="checkbox">
-        <label class="center-block">
-          <input type="checkbox" formControlName="sidekick">I have a sidekick.
-        </label>
-      </div>
-</form>
-
-<p>heroForm value: {{ heroForm.value | json}}</p>

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail-8.component.ts

@@ -1,74 +0,0 @@
-/* tslint:disable:component-class-suffix */
-// #docregion imports
-import { Component, Input, OnChanges }                   from '@angular/core';
-import { FormArray, FormBuilder, FormGroup, Validators } from '@angular/forms';
-
-import { Address, Hero, states } from '../data-model';
-// #enddocregion imports
-
-@Component({
-  selector: 'app-hero-detail-8',
-  templateUrl: './hero-detail-8.component.html'
-})
-// #docregion v8
-export class HeroDetailComponent8 implements OnChanges {
-  @Input() hero: Hero;
-
-  heroForm: FormGroup;
-  states = states;
-
-  // #docregion ctor
-  constructor(private fb: FormBuilder) {
-    this.createForm();
-    this.logNameChange();
-  }
-  // #enddocregion ctor
-
-  createForm() {
-    // #docregion secretLairs-form-array
-    this.heroForm = this.fb.group({
-      name: ['', Validators.required ],
-      secretLairs: this.fb.array([]), // <-- secretLairs as an empty FormArray
-      power: '',
-      sidekick: ''
-    });
-    // #enddocregion secretLairs-form-array
-  }
-
-  logNameChange() {/* Coming soon */}
-
-  // #docregion onchanges
-  ngOnChanges() {
-    this.rebuildForm();
-  }
-  // #enddocregion onchanges
-
-  // #docregion rebuildform
-  rebuildForm() {
-    this.heroForm.reset({
-      name: this.hero.name
-    });
-    this.setAddresses(this.hero.addresses);
-  }
-// #enddocregion rebuildform
-
-  // #docregion get-secret-lairs
-  get secretLairs(): FormArray {
-    return this.heroForm.get('secretLairs') as FormArray;
-  };
-  // #enddocregion get-secret-lairs
-
-  // #docregion set-addresses
-  setAddresses(addresses: Address[]) {
-    const addressFGs = addresses.map(address => this.fb.group(address));
-    const addressFormArray = this.fb.array(addressFGs);
-    this.heroForm.setControl('secretLairs', addressFormArray);
-  }
-  // #enddocregion set-addresses
-
-  // #docregion add-lair
-  addLair() {
-    this.secretLairs.push(this.fb.group(new Address()));
-  }
-  // #enddocregion add-lair
-}

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail.component.html

@@ -1,73 +0,0 @@
-<!-- #docplaster -->
-<!-- #docregion -->
-  <!-- #docregion buttons -->
-<form [formGroup]="heroForm" (ngSubmit)="onSubmit()">
-  <div style="margin-bottom: 1em">
-    <button type="submit"
-            [disabled]="heroForm.pristine" class="btn btn-success">Save</button> &nbsp;
-    <button type="button" (click)="revert()"
-            [disabled]="heroForm.pristine" class="btn btn-danger">Revert</button>
-  </div>
-
-  <!-- Hero Detail Controls -->
-  <!-- #enddocregion buttons -->
-  <div class="form-group">
-      <label class="center-block">Name:
-        <input class="form-control" formControlName="name">
-      </label>
-  </div>
-
-  <div formArrayName="secretLairs" class="well well-lg">
-    <div *ngFor="let address of secretLairs.controls; let i=index" [formGroupName]="i" >
-      <!-- The repeated address template -->
-      <h4>Address #{{i + 1}}</h4>
-      <div style="margin-left: 1em;">
-        <div class="form-group">
-          <label class="center-block">Street:
-            <input class="form-control" formControlName="street">
-          </label>
-        </div>
-        <div class="form-group">
-          <label class="center-block">City:
-            <input class="form-control" formControlName="city">
-          </label>
-        </div>
-        <div class="form-group">
-          <label class="center-block">State:
-            <select class="form-control" formControlName="state">
-              <option *ngFor="let state of states" [value]="state">{{state}}</option>
-            </select>
-          </label>
-        </div>
-        <div class="form-group">
-          <label class="center-block">Zip Code:
-            <input class="form-control" formControlName="zip">
-          </label>
-        </div>
-      </div>
-      <br>
-      <!-- End of the repeated address template -->
-    </div>
-    <button (click)="addLair()" type="button">Add a Secret Lair</button>
-  </div>
-  <!-- #docregion buttons -->
-  <div class="form-group radio">
-    <h4>Super power:</h4>
-    <label class="center-block"><input type="radio" formControlName="power" value="flight">Flight</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="x-ray vision">X-ray vision</label>
-    <label class="center-block"><input type="radio" formControlName="power" value="strength">Strength</label>
-  </div>
-  <div class="checkbox">
-    <label class="center-block">
-      <input type="checkbox" formControlName="sidekick">I have a sidekick.
-    </label>
-  </div>
-</form>
-  <!-- #enddocregion buttons -->
-
-<p>heroForm value: {{ heroForm.value | json}}</p>
-
-<!-- #docregion name-change-log -->
-<h4>Name change log</h4>
-<div *ngFor="let name of nameChangeLog">{{name}}</div>
-<!-- #enddocregion name-change-log -->

aio/content/examples/reactive-forms/src/app/hero-detail/hero-detail.component.ts

@@ -1,113 +0,0 @@
-// #docplaster
-// #docregion
-import { Component, Input, OnChanges }       from '@angular/core';
-import { FormArray, FormBuilder, FormGroup } from '@angular/forms';
-
-import { Address, Hero, states } from '../data-model';
-// #docregion import-service
-import { HeroService }           from '../hero.service';
-// #enddocregion import-service
-
-@Component({
-  selector: 'app-hero-detail',
-  templateUrl: './hero-detail.component.html',
-  styleUrls: ['./hero-detail.component.css']
-})
-
-// #docregion onchanges-implementation
-export class HeroDetailComponent implements OnChanges {
-// #enddocregion onchanges-implementation
-  @Input() hero: Hero;
-
-  heroForm: FormGroup;
-  // #docregion log-name-change
-  nameChangeLog: string[] = [];
-  // #enddocregion log-name-change
-  states = states;
-
-  // #docregion ctor
-  constructor(
-    private fb: FormBuilder,
-    private heroService: HeroService) {
-
-    this.createForm();
-    this.logNameChange();
-  }
-  // #enddocregion ctor
-
-  createForm() {
-    this.heroForm = this.fb.group({
-      name: '',
-      secretLairs: this.fb.array([]),
-      power: '',
-      sidekick: ''
-    });
-  }
-
-  ngOnChanges() {
-    this.rebuildForm();
-  }
-
-  rebuildForm() {
-    this.heroForm.reset({
-      name: this.hero.name
-    });
-    this.setAddresses(this.hero.addresses);
-  }
-
-  get secretLairs(): FormArray {
-    return this.heroForm.get('secretLairs') as FormArray;
-  };
-
-  setAddresses(addresses: Address[]) {
-    const addressFGs = addresses.map(address => this.fb.group(address));
-    const addressFormArray = this.fb.array(addressFGs);
-    this.heroForm.setControl('secretLairs', addressFormArray);
-  }
-
-  addLair() {
-    this.secretLairs.push(this.fb.group(new Address()));
-  }
-
-  // #docregion on-submit
-  onSubmit() {
-    this.hero = this.prepareSaveHero();
-    this.heroService.updateHero(this.hero).subscribe(/* error handling */);
-    this.rebuildForm();
-  }
-  // #enddocregion on-submit
-
-  // #docregion prepare-save-hero
-  prepareSaveHero(): Hero {
-    const formModel = this.heroForm.value;
-
-    // deep copy of form model lairs
-    const secretLairsDeepCopy: Address[] = formModel.secretLairs.map(
-      (address: Address) => Object.assign({}, address)
-    );
-
-    // return new `Hero` object containing a combination of original hero value(s)
-    // and deep copies of changed form model values
-    const saveHero: Hero = {
-      id: this.hero.id,
-      name: formModel.name as string,
-      // addresses: formModel.secretLairs // <-- bad!
-      addresses: secretLairsDeepCopy
-    };
-    return saveHero;
-  }
-  // #enddocregion prepare-save-hero
-
-  // #docregion revert
-  revert() { this.rebuildForm(); }
-  // #enddocregion revert
-
-  // #docregion log-name-change
-  logNameChange() {
-    const nameControl = this.heroForm.get('name');
-    nameControl.valueChanges.forEach(
-      (value: string) => this.nameChangeLog.push(value)
-    );
-  }
-  // #enddocregion log-name-change
-}

aio/content/examples/reactive-forms/src/app/hero-list/hero-list.component.1.html

@@ -1,8 +0,0 @@
-<!-- #docregion -->
-<nav>
-  <a *ngFor="let hero of heroes | async" (click)="select(hero)">{{hero.name}}</a>
-</nav>
-
-<div *ngIf="selectedHero">
-  <app-hero-detail [hero]="selectedHero"></app-hero-detail>
-</div>

aio/content/examples/reactive-forms/src/app/hero-list/hero-list.component.html

@@ -1,17 +0,0 @@
-<!-- #docregion -->
-<h3 *ngIf="isLoading"><i>Loading heroes ... </i></h3>
-<h3 *ngIf="!isLoading">Select a hero:</h3>
-
-<nav>
-  <button (click)="getHeroes()" class="btn btn-primary">Refresh</button>
-  <a *ngFor="let hero of heroes | async" (click)="select(hero)">{{hero.name}}</a>
-</nav>
-
-<div *ngIf="selectedHero">
-  <hr>
-  <h2>Hero Detail</h2>
-  <h3>Editing: {{selectedHero.name}}</h3>
-  <!-- #docregion hero-binding -->
-  <app-hero-detail [hero]="selectedHero"></app-hero-detail>
-  <!-- #enddocregion hero-binding -->
-</div>

aio/content/examples/reactive-forms/src/app/hero-list/hero-list.component.ts

@@ -1,32 +0,0 @@
-// #docregion
-import { Component, OnInit } from '@angular/core';
-import { Observable }        from 'rxjs';
-import { finalize } from 'rxjs/operators';
-
-import { Hero }        from '../data-model';
-import { HeroService } from '../hero.service';
-
-@Component({
-  selector: 'app-hero-list',
-  templateUrl: './hero-list.component.html',
-  styleUrls: ['./hero-list.component.css']
-})
-export class HeroListComponent implements OnInit {
-  heroes: Observable<Hero[]>;
-  isLoading = false;
-  selectedHero: Hero;
-
-  constructor(private heroService: HeroService) { }
-
-  ngOnInit() { this.getHeroes(); }
-
-  getHeroes() {
-    this.isLoading = true;
-    this.heroes = this.heroService.getHeroes()
-                      // TODO: error handling
-                      .pipe(finalize(() => this.isLoading = false));
-    this.selectedHero = undefined;
-  }
-
-  select(hero: Hero) { this.selectedHero = hero; }
-}

aio/content/examples/reactive-forms/src/app/hero.service.ts

@@ -1,25 +0,0 @@
-// #docregion
-import { Injectable } from '@angular/core';
-
-import { Observable, of } from 'rxjs';
-import { delay } from 'rxjs/operators';
-
-import { Hero, heroes } from './data-model';
-
-@Injectable()
-export class HeroService {
-
-  delayMs = 500;
-
-  // Fake server get; assume nothing can go wrong
-  getHeroes(): Observable<Hero[]> {
-    return of(heroes).pipe(delay(this.delayMs)); // simulate latency with delay
-  }
-
-  // Fake server update; assume nothing can go wrong
-  updateHero(hero: Hero): Observable<Hero>  {
-    const oldHero = heroes.find(h => h.id === hero.id);
-    const newHero = Object.assign(oldHero, hero); // Demo: mutate cached hero
-    return of(newHero).pipe(delay(this.delayMs)); // simulate latency with delay
-  }
-}

aio/content/examples/reactive-forms/src/app/name-editor/name-editor.component.css

@@ -0,0 +1,19 @@
+:host {
+  display: flex;
+  flex-direction: column;
+  padding-top: 24px;
+}
+
+label {
+  display: block;
+  width: 6em;
+  margin: .5em 0;
+  color: #607D8B;
+  font-weight: bold;
+}
+
+input {
+  height: 2em;
+  font-size: 1em;
+  padding-left: .4em;
+}

aio/content/examples/reactive-forms/src/app/name-editor/name-editor.component.html

@@ -0,0 +1,21 @@
+<!-- #docregion control-binding -->
+<label>
+  Name:
+  <input type="text" [formControl]="name">
+</label>
+
+<!-- #enddocregion control-binding -->
+
+<!-- #docregion display-value -->
+
+<p>
+  Value: {{ name.value }}
+</p>
+<!-- #enddocregion display-value -->
+
+<!-- #docregion update-value -->
+
+<p>
+  <button (click)="updateName()">Update Name</button>
+</p>
+<!-- #enddocregion update-value -->

aio/content/examples/reactive-forms/src/app/name-editor/name-editor.component.ts

@@ -0,0 +1,22 @@
+// #docplaster
+// #docregion create-control
+import { Component } from '@angular/core';
+import { FormControl } from '@angular/forms';
+
+@Component({
+  selector: 'app-name-editor',
+  templateUrl: './name-editor.component.html',
+  styleUrls: ['./name-editor.component.css']
+})
+export class NameEditorComponent {
+  name = new FormControl('');
+// #enddocregion create-control
+
+// #docregion update-value
+  updateName() {
+    this.name.setValue('Nancy');
+  }
+// #enddocregion update-value
+// #docregion create-control
+}
+// #enddocregion create-control

aio/content/examples/reactive-forms/src/app/profile-editor/profile-editor.component.1.html

@@ -0,0 +1,67 @@
+<!-- #docplaster -->
+<!-- #docregion formgroup -->
+<form [formGroup]="profileForm">
+  
+  <label>
+    First Name:
+    <input type="text" formControlName="firstName">
+  </label>
+
+  <label>
+    Last Name:
+    <input type="text" formControlName="lastName">
+  </label>
+
+<!-- #enddocregion formgroup -->
+  <!-- #docregion formgroupname -->
+  <div formGroupName="address">
+    <h3>Address</h3>
+
+    <label>
+      Street:
+      <input type="text" formControlName="street">
+    </label>
+
+    <label>
+      City:
+      <input type="text" formControlName="city">
+    </label>
+    
+    <label>
+      State:
+      <input type="text" formControlName="state">
+    </label>
+
+    <label>
+      Zip Code:
+      <input type="text" formControlName="zip">
+    </label>
+  </div>
+  <!-- #enddocregion formgroupname -->
+
+  <!-- #docregion formarrayname -->
+  <div formArrayName="aliases">
+    <h3>Aliases</h3> <button (click)="addAlias()">Add Alias</button>
+
+    <div *ngFor="let address of aliases.controls; let i=index">
+      <!-- The repeated alias template -->
+      <label>
+        Alias:
+        <input type="text" [formControlName]="i">
+      </label>
+    </div>
+  </div>
+  <!-- #enddocregion formarrayname -->
+<!-- #docregion formgroup -->  
+</form>
+<!-- #enddocregion formgroup -->
+
+<p>
+  Form Value: {{ profileForm.value | json }}
+</p>
+
+<!-- #docregion patch-value -->
+<p>
+  <button (click)="updateProfile()">Update Profile</button>
+</p>
+<!-- #enddocregion patch-value -->

aio/content/examples/reactive-forms/src/app/profile-editor/profile-editor.component.1.ts

@@ -0,0 +1,40 @@
+// #docplaster
+// #docregion formgroup, nested-formgroup
+import { Component } from '@angular/core';
+// #docregion imports
+import { FormGroup, FormControl } from '@angular/forms';
+// #enddocregion imports
+
+@Component({
+  selector: 'app-profile-editor',
+  templateUrl: './profile-editor.component.html',
+  styleUrls: ['./profile-editor.component.css']
+})
+export class ProfileEditorComponent {
+// #docregion formgroup-compare
+  profileForm = new FormGroup({
+    firstName: new FormControl(''),
+    lastName: new FormControl(''),
+// #enddocregion formgroup
+    address: new FormGroup({
+      street: new FormControl(''),
+      city: new FormControl(''),
+      state: new FormControl(''),
+      zip: new FormControl('')
+    })
+// #docregion formgroup
+  });
+// #enddocregion formgroup, nested-formgroup, formgroup-compare
+// #docregion patch-value
+  updateProfile() {
+    this.profileForm.patchValue({
+      firstName: 'Nancy',
+      address: {
+        street: '123 Drew Street'
+      }
+    });
+  }
+// #enddocregion patch-value
+// #docregion formgroup, nested-formgroup
+}
+// #enddocregion formgroup

aio/content/examples/reactive-forms/src/app/profile-editor/profile-editor.component.2.ts

@@ -0,0 +1,58 @@
+// #docplaster
+// #docregion form-builder
+import { Component } from '@angular/core';
+// #docregion form-builder-imports
+import { FormBuilder } from '@angular/forms';
+// #enddocregion form-builder-imports, form-builder
+// #docregion form-array-imports
+import { FormArray } from '@angular/forms';
+// #docregion form-builder-imports, form-builder
+// #enddocregion form-builder-imports, form-array-imports
+
+@Component({
+  selector: 'app-profile-editor',
+  templateUrl: './profile-editor.component.html',
+  styleUrls: ['./profile-editor.component.css']
+})
+export class ProfileEditorComponent {
+// #docregion formgroup-compare
+  profileForm = this.fb.group({
+    firstName: [''],
+    lastName: [''],
+    address: this.fb.group({
+      street: [''],
+      city: [''],
+      state: [''],
+      zip: ['']
+    }),
+// #enddocregion form-builder, formgroup-compare
+    aliases: this.fb.array([
+      this.fb.control('')
+    ])
+// #docregion form-builder, formgroup-compare
+  });
+// #enddocregion form-builder, formgroup-compare
+  get aliases() {
+    return this.profileForm.get('aliases') as FormArray;
+  }
+
+// #docregion inject-form-builder, form-builder
+
+  constructor(private fb: FormBuilder) { }
+// #enddocregion inject-form-builder, form-builder
+
+  updateProfile() {
+    this.profileForm.patchValue({
+      firstName: 'Nancy',
+      address: {
+        street: '123 Drew Street'
+      }
+    });
+  }
+
+  addAlias() {
+    this.aliases.push(this.fb.control(''));
+  }
+// #docregion form-builder
+}
+// #enddocregion form-builder

aio/content/examples/reactive-forms/src/app/profile-editor/profile-editor.component.css

@@ -0,0 +1,39 @@
+/* ProfileEditorComponent's private CSS styles */
+:host {
+  display: flex;
+  flex-direction: column;
+  padding-top: 24px;
+}
+
+label {
+  display: block;
+  width: 6em;
+  margin: .5em 0;
+  color: #607D8B;
+  font-weight: bold;
+}
+
+input {
+  height: 2em;
+  font-size: 1em;
+  padding-left: .4em;
+}
+
+button {
+  font-family: Arial;
+  background-color: #eee;
+  border: none;
+  padding: 5px 10px;
+  border-radius: 4px;
+  cursor: pointer;
+}
+
+button:hover {
+  background-color: #cfd8dc;
+}
+
+button:disabled {
+  background-color: #eee;
+  color: #ccc;
+  cursor: auto;
+}

aio/content/examples/reactive-forms/src/app/profile-editor/profile-editor.component.html

@@ -0,0 +1,80 @@
+<!-- #docplaster -->
+<!-- #docregion ng-submit -->
+<form [formGroup]="profileForm" (ngSubmit)="onSubmit()">
+<!-- #enddocregion ng-submit -->
+  <label>
+    First Name:
+    <!-- #docregion required-attribute -->
+    <input type="text" formControlName="firstName" required>
+    <!-- #enddocregion required-attribute -->
+  </label>
+
+  <label>
+    Last Name:
+    <input type="text" formControlName="lastName">
+  </label>
+
+  <div formGroupName="address">
+    <h3>Address</h3>
+
+    <label>
+      Street:
+      <input type="text" formControlName="street">
+    </label>
+
+    <label>
+      City:
+      <input type="text" formControlName="city">
+    </label>
+    
+    <label>
+      State:
+      <input type="text" formControlName="state">
+    </label>
+
+    <label>
+      Zip Code:
+      <input type="text" formControlName="zip">
+    </label>
+  </div>
+
+  <!-- #docregion formarrayname -->
+  <div formArrayName="aliases">
+    <h3>Aliases</h3> <button (click)="addAlias()">Add Alias</button>
+
+    <div *ngFor="let address of aliases.controls; let i=index">
+      <!-- The repeated alias template -->
+      <label>
+        Alias:
+        <input type="text" [formControlName]="i">
+      </label>
+    </div>
+  </div>
+  <!-- #enddocregion formarrayname -->
+
+  <!-- #docregion submit-button -->
+  <button type="submit" [disabled]="!profileForm.valid">Submit</button>
+  <!-- #enddocregion submit-button -->
+</form>
+
+<hr>
+
+<!-- #docregion display-value -->
+
+<p>
+  Form Value: {{ profileForm.value | json }}
+</p>
+<!-- #enddocregion display-value -->
+
+<!-- #docregion display-status -->
+
+<p>
+  Form Status: {{ profileForm.status }}
+</p>
+<!-- #enddocregion display-status -->
+
+<!-- #docregion patch-value -->
+<p>
+  <button (click)="updateProfile()">Update Profile</button>
+</p>
+<!-- #enddocregion patch-value -->

aio/content/examples/reactive-forms/src/app/profile-editor/profile-editor.component.ts

@@ -0,0 +1,73 @@
+// #docplaster
+// #docregion form-builder
+import { Component } from '@angular/core';
+// #docregion form-builder-imports
+import { FormBuilder } from '@angular/forms';
+// #enddocregion form-builder-imports
+// #docregion validator-imports
+import { Validators } from '@angular/forms';
+// #enddocregion validator-imports
+// #docregion form-array-imports
+import { FormArray } from '@angular/forms';
+// #enddocregion form-array-imports
+
+@Component({
+  selector: 'app-profile-editor',
+  templateUrl: './profile-editor.component.html',
+  styleUrls: ['./profile-editor.component.css']
+})
+export class ProfileEditorComponent {
+// #docregion required-validator, aliases
+  profileForm = this.fb.group({
+    firstName: ['', Validators.required],
+    lastName: [''],
+    address: this.fb.group({
+      street: [''],
+      city: [''],
+      state: [''],
+      zip: ['']
+    }),
+// #enddocregion form-builder, required-validator
+    aliases: this.fb.array([
+      this.fb.control('')
+    ])
+// #docregion form-builder, required-validator
+  });
+// #enddocregion form-builder, required-validator, aliases
+// #docregion aliases-getter
+
+  get aliases() {
+    return this.profileForm.get('aliases') as FormArray;
+  }
+
+// #enddocregion aliases-getter
+// #docregion inject-form-builder, form-builder
+  constructor(private fb: FormBuilder) { }
+
+// #enddocregion inject-form-builder
+
+  updateProfile() {
+    this.profileForm.patchValue({
+      firstName: 'Nancy',
+      address: {
+        street: '123 Drew Street'
+      }
+    });
+  }
+// #enddocregion form-builder
+// #docregion add-alias
+
+  addAlias() {
+    this.aliases.push(this.fb.control(''));
+  }
+// #enddocregion add-alias
+// #docregion on-submit
+
+  onSubmit() {
+    // TODO: Use EventEmitter with form value
+    console.warn(this.profileForm.value);
+  }
+// #enddocregion on-submit
+// #docregion form-builder
+}
+// #enddocregion form-builder

aio/content/examples/reactive-forms/src/index-final.html

@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-<!-- #docregion -->
-<html lang="en">
-
-<head>
-  <title>Hero Form</title>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <!-- #docregion bootstrap -->
-  <link rel="stylesheet" href="https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css">
-</head>
-
-<body>
-  <app-root></app-root>
-</body>
-
-</html>

aio/content/examples/reactive-forms/src/index.html

@@ -2,10 +2,9 @@
 <!-- #docregion -->
 <html lang="en">
   <head>
-    <title>Hero Form</title>
+    <title>Angular Reactive Forms</title>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
-    <link rel="stylesheet" href="https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css">
   </head>
 
   <body>

aio/content/examples/reactive-forms/src/main-final.ts

@@ -1,13 +0,0 @@
-// tslint:disable:no-unused-variable
-import { enableProdMode } from '@angular/core';
-import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
-
-import { AppModule } from './app/app.module';
-import { environment } from './environments/environment';
-
-if (environment.production) {
-  enableProdMode();
-}
-
-platformBrowserDynamic().bootstrapModule(AppModule);
-

aio/content/examples/reactive-forms/src/main.ts

@@ -2,12 +2,11 @@
 import { enableProdMode } from '@angular/core';
 import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
 
-import { AppModule } from './app/app.module'; // just the final version
+import { AppModule } from './app/app.module';
-import { DemoModule } from './app/demo.module'; // demo picker
 import { environment } from './environments/environment';
 
 if (environment.production) {
   enableProdMode();
 }
 
-platformBrowserDynamic().bootstrapModule(DemoModule);
+platformBrowserDynamic().bootstrapModule(AppModule);

aio/content/examples/reactive-forms/src/styles.1.css

@@ -1 +0,0 @@
-@import url('https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css');

aio/content/examples/reactive-forms/stackblitz.json

@@ -3,6 +3,7 @@
   "files":[
     "!**/*.d.ts",
     "!**/*.js",
+    "!**/*.[0-9].*",
 
     "!src/app/app.component.1.ts",
     "!src/app/hero-list.component.1.html",