.angular-cli.json

@@ -17,7 +17,7 @@
       "test": "test.ts",
       "tsconfig": "tsconfig.app.json",
       "testTsconfig": "tsconfig.spec.json",
-      "prefix": "app",
+      "prefix": "",
       "styles": [
         "styles.scss"
       ],

src/app/app.component.html

@@ -5,15 +5,10 @@
 </nav>
 
 <aside>
-  <h2>Contacts</h2>
-  <ul>
-    <li
-      *ngFor="let contact of contacts"
-      (click)="selectContact(contact)"
-      [class.selected]="isSelected(contact)">
-      {{contact.name}}
-    </li>
-  </ul>
+  <contact-list
+    [contacts]="contacts"
+    (select)="selectContact($event)">
+  </contact-list>
 
   <h2>New Contact</h2>
   <form (submit)="addContact()">
@@ -27,9 +22,7 @@
   </form>
 </aside>
 
-<main *ngIf="selectedContact">
-  <h2>{{selectedContact.name}}</h2>
-  <input
-  type="text"
-  [(ngModel)]="selectedContact.name">
-</main>
+<contact-detail
+  *ngIf="selectedContact"
+  [contact]="selectedContact">
+</contact-detail>

src/app/app.component.scss

@@ -15,43 +15,19 @@ h1 {
   @extend .navbar-brand;
 }
 
-h2 {
-  margin-top: 20px;
-}
-
 aside {
   @extend .col-4;
 }
 
-main {
+contact-detail {
   @extend .col-8;
 }
 
-input[type="text"] {
-  @extend .form-control;
-}
-
 button {
   @extend .btn;
   @extend .btn-primary;
 }
 
-ul {
-  @extend .list-group;
-}
-
-ul>li {
-  @extend .list-group-item;
-}
-
-li {
-  cursor: pointer;
-}
-
-li.selected {
-  @extend .active
-}
-
 form button {
   margin-top: 10px;
 }

src/app/app.component.ts

@@ -27,7 +27,4 @@ export class AppComponent {
     this.selectedContact = contact;
   }
 
-  isSelected(contact): boolean {
-    return this.selectedContact == contact;
-  }
 }

src/app/app.module.ts

@@ -3,10 +3,14 @@ import { NgModule } from '@angular/core';
 import { FormsModule } from '@angular/forms'
 
 import { AppComponent } from './app.component';
+import { ContactDetailComponent } from './contact/contact-detail/contact-detail.component';
+import { ContactListComponent } from './contact/contact-list/contact-list.component';
 
 @NgModule({
   declarations: [
-    AppComponent
+    AppComponent,
+    ContactDetailComponent,
+    ContactListComponent
   ],
   imports: [
     BrowserModule,

src/app/contact/contact-detail/contact-detail.component.html

+<h2>{{contact.name}}</h2>
+<input type="text" [(ngModel)]="contact.name">

src/app/contact/contact-detail/contact-detail.component.ts

+import { Component, Input } from '@angular/core';
+
+@Component({
+  selector: 'contact-detail',
+  templateUrl: './contact-detail.component.html',
+  styleUrls: ['./contact-detail.component.scss']
+})
+export class ContactDetailComponent {
+
+  @Input() contact;
+
+}

src/app/contact/contact-list/contact-list.component.html

+<h2>Contacts</h2>
+<ul>
+  <li
+    *ngFor="let contact of contacts"
+    (click)="selectContact(contact)"
+    [class.selected]="isSelected(contact)">
+    {{contact.name}}
+  </li>
+</ul>

src/app/contact/contact-list/contact-list.component.scss

+@import '../../../styles';
+
+ul {
+  @extend .list-group;
+}
+
+ul>li {
+  @extend .list-group-item;
+}
+
+li {
+  cursor: pointer;
+}
+
+li.selected {
+  @extend .active
+}

src/app/contact/contact-list/contact-list.component.ts

+import { Component, OnInit, Input, EventEmitter, Output } from '@angular/core';
+
+@Component({
+  selector: 'contact-list',
+  templateUrl: './contact-list.component.html',
+  styleUrls: ['./contact-list.component.scss']
+})
+export class ContactListComponent {
+  selectedContact: any;
+  @Input() contacts;
+  @Output() select = new EventEmitter();
+
+  selectContact(contact) {
+    this.selectedContact = contact;
+    this.select.next(contact);
+  }
+
+  isSelected(contact): boolean {
+    return this.selectedContact == contact;
+  }
+}

src/styles.scss

 /* You can add global styles to this file, and also import other style files */
 
 @import '../node_modules/bootstrap/scss/bootstrap';
+
+
+h2 {
+  margin-top: 20px;
+}
+
+input[type="text"] {
+  @extend .form-control;
+}