docs(toh-5): dashboard uses [routerLink] bindings #998 (#2718)

* docs(toh-5): dashboard uses [routerLink] bindings #998
closes #998

* chore: temp add toh-5 to bad-code-excerpt-skip-patterns.txt

public/docs/_examples/toh-5/dart/lib/dashboard_component.1.html

@@ -0,0 +1,9 @@
+<!-- #docregion -->
+<h3>Top Heroes</h3>
+<div class="grid grid-pad">
+  <div *ngFor="let hero of heroes" class="col-1-4">
+    <div class="module hero">
+      <h4>{{hero.name}}</h4>
+    </div>
+  </div>
+</div>

public/docs/_examples/toh-5/dart/lib/dashboard_component.css

@@ -1,6 +1,12 @@
 /* #docregion */
 [class*='col-'] {
   float: left;
+  text-decoration: none;
+  padding-right: 20px;
+  padding-bottom: 20px;
+}
+[class*='col-']:last-of-type {
+  padding-right: 0;
 }
 *, *:after, *:before {
 	-webkit-box-sizing: border-box;
@@ -10,12 +16,8 @@
 h3 {
   text-align: center; margin-bottom: 0;
 }
-[class*='col-'] {
+h4 {
-  padding-right: 20px;
+  position: relative;
-  padding-bottom: 20px;
-}
-[class*='col-']:last-of-type {
-  padding-right: 0;
 }
 .grid {
   margin: 0;
@@ -32,9 +34,6 @@ h3 {
 	background-color: #607D8B;
 	border-radius: 2px;
 }
-h4 {
-  position: relative;
-}
 .module:hover {
   background-color: #EEE;
   cursor: pointer;

public/docs/_examples/toh-5/dart/lib/dashboard_component.dart

@@ -1,14 +1,13 @@
 // #docplaster
 // #docregion
+// #docregion imports
 import 'dart:async';
 
 import 'package:angular2/core.dart';
-// #docregion import-router
-import 'package:angular2/router.dart';
-// #enddocregion import-router
 
 import 'hero.dart';
 import 'hero_service.dart';
+// #enddocregion imports
 
 @Component(
     selector: 'my-dashboard',
@@ -24,24 +23,14 @@ class DashboardComponent implements OnInit {
   List<Hero> heroes;
 
   // #docregion ctor
-  final Router _router;
   final HeroService _heroService;
 
-  DashboardComponent(this._heroService, this._router);
+  DashboardComponent(this._heroService);
 
   // #enddocregion ctor
 
   Future<Null> ngOnInit() async {
     heroes = (await _heroService.getHeroes()).skip(1).take(4).toList();
   }
-
-  // #docregion gotoDetail
-  void gotoDetail(Hero hero) {
-    var link = [
-      'HeroDetail',
-      {'id': hero.id.toString()}
-    ];
-    _router.navigate(link);
-  }
-// #enddocregion gotoDetail
 }
+// #enddocregion component

public/docs/_examples/toh-5/dart/lib/dashboard_component.html

@@ -2,10 +2,10 @@
 <h3>Top Heroes</h3>
 <div class="grid grid-pad">
   <!-- #docregion click -->
-  <div *ngFor="let hero of heroes" (click)="gotoDetail(hero)" class="col-1-4" >
+  <a *ngFor="let hero of heroes"  [routerLink]="['/detail', hero.id]"  class="col-1-4">
-    <!-- #enddocregion click -->
+  <!-- #enddocregion click -->
     <div class="module hero">
       <h4>{{hero.name}}</h4>
     </div>
-  </div>
+  </a>
 </div>

public/docs/_examples/toh-5/dart/lib/dashboard_component_2.dart

@@ -1,26 +0,0 @@
-// #docplaster
-// #docregion imports
-import 'dart:async';
-
-import 'package:angular2/core.dart';
-
-import 'hero.dart';
-import 'hero_service.dart';
-// #enddocregion imports
-
-// #docregion component
-@Component(
-  selector: 'my-dashboard',
-  templateUrl: 'dashboard_component.html')
-class DashboardComponent implements OnInit {
-  List<Hero> heroes;
-  final HeroService _heroService;
-
-  DashboardComponent(this._heroService);
-
-  Future<Null> ngOnInit() async {
-    heroes = (await _heroService.getHeroes()).skip(1).take(4).toList();
-  }
-
-  gotoDetail(Hero hero) {/* not implemented yet */}
-}

public/docs/_examples/toh-5/e2e-spec.ts

@@ -42,16 +42,16 @@ describe('Tutorial part 5', () => {
   beforeAll(() => browser.get(''));
 
   function getPageElts() {
-    let hrefElts = element.all(by.css('my-app a'));
+    let navElts = element.all(by.css('my-app nav a'));
 
     return {
-      hrefs: hrefElts,
+      navElts: navElts,
 
-      myDashboardHref: hrefElts.get(0),
+      myDashboardHref: navElts.get(0),
       myDashboard: element(by.css('my-app my-dashboard')),
       topHeroes: element.all(by.css('my-app my-dashboard > div h4')),
 
-      myHeroesHref: hrefElts.get(1),
+      myHeroesHref: navElts.get(1),
       myHeroes: element(by.css('my-app my-heroes')),
       allHeroes: element.all(by.css('my-app my-heroes li')),
       selectedHero: element(by.css('my-app li.selected')),
@@ -73,7 +73,7 @@ describe('Tutorial part 5', () => {
 
     const expectedViewNames = ['Dashboard', 'Heroes'];
     it(`has views ${expectedViewNames}`, () => {
-      let viewNames = getPageElts().hrefs.map((el: ElementFinder) => el.getText());
+      let viewNames = getPageElts().navElts.map((el: ElementFinder) => el.getText());
       expect(viewNames).toEqual(expectedViewNames);
     });
 

public/docs/_examples/toh-5/ts/app/dashboard.component.1.html

@@ -0,0 +1,9 @@
+<!-- #docregion -->
+<h3>Top Heroes</h3>
+<div class="grid grid-pad">
+  <div *ngFor="let hero of heroes" class="col-1-4">
+    <div class="module hero">
+      <h4>{{hero.name}}</h4>
+    </div>
+  </div>
+</div>

public/docs/_examples/toh-5/ts/app/dashboard.component.2.ts

@@ -1,27 +0,0 @@
-// #docplaster
-// #docregion imports
-import { Component, OnInit } from '@angular/core';
-
-import { Hero } from './hero';
-import { HeroService } from './hero.service';
-// #enddocregion imports
-
-@Component({
-  moduleId: module.id,
-  selector: 'my-dashboard',
-  templateUrl: 'dashboard.component.html'
-})
-// #docregion component
-export class DashboardComponent implements OnInit {
-
-  heroes: Hero[] = [];
-
-  constructor(private heroService: HeroService) { }
-
-  ngOnInit(): void {
-    this.heroService.getHeroes()
-      .then(heroes => this.heroes = heroes.slice(1, 5));
-  }
-
-  gotoDetail(hero: Hero): void { /* not implemented yet */}
-}

public/docs/_examples/toh-5/ts/app/dashboard.component.css

@@ -1,22 +1,26 @@
 /* #docregion */
 [class*='col-'] {
   float: left;
-}
-*, *:after, *:before {
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
-	box-sizing: border-box;
-}
-h3 {
-  text-align: center; margin-bottom: 0;
-}
-[class*='col-'] {
   padding-right: 20px;
   padding-bottom: 20px;
 }
 [class*='col-']:last-of-type {
   padding-right: 0;
 }
+a {
+  text-decoration: none;
+}
+*, *:after, *:before {
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+h3 {
+  text-align: center; margin-bottom: 0;
+}
+h4 {
+  position: relative;
+}
 .grid {
   margin: 0;
 }
@@ -24,16 +28,13 @@ h3 {
   width: 25%;
 }
 .module {
-	padding: 20px;
+  padding: 20px;
-	text-align: center;
+  text-align: center;
-	color: #eee;
+  color: #eee;
-	max-height: 120px;
+  max-height: 120px;
-	min-width: 120px;
+  min-width: 120px;
-	background-color: #607D8B;
+  background-color: #607D8B;
-	border-radius: 2px;
+  border-radius: 2px;
-}
-h4 {
-  position: relative;
 }
 .module:hover {
   background-color: #EEE;
@@ -47,15 +48,15 @@ h4 {
   padding-right: 20px;
 }
 @media (max-width: 600px) {
-	.module {
+  .module {
-	  font-size: 10px;
+    font-size: 10px;
-	  max-height: 75px; }
+    max-height: 75px; }
 }
 @media (max-width: 1024px) {
-	.grid {
+  .grid {
-	  margin: 0;
+    margin: 0;
-	}
+  }
-	.module {
+  .module {
-	  min-width: 60px;
+    min-width: 60px;
-	}
+  }
 }

public/docs/_examples/toh-5/ts/app/dashboard.component.html

@@ -2,10 +2,10 @@
 <h3>Top Heroes</h3>
 <div class="grid grid-pad">
   <!-- #docregion click -->
-  <div *ngFor="let hero of heroes" (click)="gotoDetail(hero)" class="col-1-4">
+  <a *ngFor="let hero of heroes"  [routerLink]="['/detail', hero.id]"  class="col-1-4">
   <!-- #enddocregion click -->
     <div class="module hero">
       <h4>{{hero.name}}</h4>
     </div>
-  </div>
+  </a>
 </div>

public/docs/_examples/toh-5/ts/app/dashboard.component.ts

@@ -1,13 +1,13 @@
 // #docplaster
 // #docregion
+// #docregion imports
 import { Component, OnInit } from '@angular/core';
-// #docregion import-router
-import { Router } from '@angular/router';
-// #enddocregion import-router
 
 import { Hero } from './hero';
 import { HeroService } from './hero.service';
-  // #docregion metadata
+// #enddocregion imports
+
+// #docregion metadata
 @Component({
   moduleId: module.id,
   selector: 'my-dashboard',
@@ -19,27 +19,18 @@ import { HeroService } from './hero.service';
   // #docregion metadata
 })
 // #enddocregion metadata
-// #docregion component
+// #docregion class
 export class DashboardComponent implements OnInit {
 
   heroes: Hero[] = [];
 
   // #docregion ctor
-  constructor(
+  constructor(private heroService: HeroService) { }
-    private router: Router,
-    private heroService: HeroService) {
-  }
   // #enddocregion ctor
 
   ngOnInit(): void {
     this.heroService.getHeroes()
       .then(heroes => this.heroes = heroes.slice(1, 5));
   }
-
-  // #docregion gotoDetail
-  gotoDetail(hero: Hero): void {
-    let link = ['/detail', hero.id];
-    this.router.navigate(link);
-  }
-  // #enddocregion gotoDetail
 }
+// #enddocregion class

public/docs/_examples/toh-5/ts/app/heroes.component.ts

@@ -40,8 +40,10 @@ export class HeroesComponent implements OnInit {
     this.selectedHero = hero;
   }
 
+  // #docregion gotoDetail
   gotoDetail(): void {
     this.router.navigate(['/detail', this.selectedHero.id]);
   }
+  // #enddocregion gotoDetail
   // #docregion renaming
 }

public/docs/_examples/toh-6/dart/lib/dashboard_component.css

@@ -1,22 +1,26 @@
 /* #docregion */
 [class*='col-'] {
   float: left;
-}
-*, *:after, *:before {
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
-	box-sizing: border-box;
-}
-h3 {
-  text-align: center; margin-bottom: 0;
-}
-[class*='col-'] {
   padding-right: 20px;
   padding-bottom: 20px;
 }
 [class*='col-']:last-of-type {
   padding-right: 0;
 }
+a {
+  text-decoration: none;
+}
+*, *:after, *:before {
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+h3 {
+  text-align: center; margin-bottom: 0;
+}
+h4 {
+  position: relative;
+}
 .grid {
   margin: 0;
 }
@@ -24,16 +28,13 @@ h3 {
   width: 25%;
 }
 .module {
-	padding: 20px;
+  padding: 20px;
-	text-align: center;
+  text-align: center;
-	color: #eee;
+  color: #eee;
-	max-height: 120px;
+  max-height: 120px;
-	min-width: 120px;
+  min-width: 120px;
-	background-color: #607D8B;
+  background-color: #607D8B;
-	border-radius: 2px;
+  border-radius: 2px;
-}
-h4 {
-  position: relative;
 }
 .module:hover {
   background-color: #EEE;
@@ -47,15 +48,15 @@ h4 {
   padding-right: 20px;
 }
 @media (max-width: 600px) {
-	.module {
+  .module {
-	  font-size: 10px;
+    font-size: 10px;
-	  max-height: 75px; }
+    max-height: 75px; }
 }
 @media (max-width: 1024px) {
-	.grid {
+  .grid {
-	  margin: 0;
+    margin: 0;
-	}
+  }
-	.module {
+  .module {
-	  min-width: 60px;
+    min-width: 60px;
-	}
+  }
 }

public/docs/_examples/toh-6/dart/lib/dashboard_component.dart

@@ -18,20 +18,11 @@ import 'hero_search_component.dart';
 class DashboardComponent implements OnInit {
   List<Hero> heroes;
 
-  final Router _router;
   final HeroService _heroService;
 
-  DashboardComponent(this._heroService, this._router);
+  DashboardComponent(this._heroService);
 
   Future<Null> ngOnInit() async {
     heroes = (await _heroService.getHeroes()).skip(1).take(4).toList();
   }
-
-  void gotoDetail(Hero hero) {
-    var link = [
-      'HeroDetail',
-      {'id': hero.id.toString()}
-    ];
-    _router.navigate(link);
-  }
 }

public/docs/_examples/toh-6/dart/lib/dashboard_component.html

@@ -1,10 +1,10 @@
 <!-- #docregion -->
 <h3>Top Heroes</h3>
 <div class="grid grid-pad">
-  <div *ngFor="let hero of heroes" (click)="gotoDetail(hero)" class="col-1-4">
+  <a *ngFor="let hero of heroes"  [routerLink]="['/detail', hero.id]"  class="col-1-4">
     <div class="module hero">
       <h4>{{hero.name}}</h4>
     </div>
-  </div>
+  </a>
 </div>
 <hero-search></hero-search>

public/docs/_examples/toh-6/e2e-spec.ts

@@ -48,16 +48,16 @@ describe('Tutorial part 6', () => {
   beforeAll(() => browser.get(''));
 
   function getPageElts() {
-    let hrefElts = element.all(by.css('my-app a'));
+    let navElts = element.all(by.css('my-app nav a'));
 
     return {
-      hrefs: hrefElts,
+      navElts: navElts,
 
-      myDashboardHref: hrefElts.get(0),
+      myDashboardHref: navElts.get(0),
       myDashboard: element(by.css('my-app my-dashboard')),
       topHeroes: element.all(by.css('my-app my-dashboard > div h4')),
 
-      myHeroesHref: hrefElts.get(1),
+      myHeroesHref: navElts.get(1),
       myHeroes: element(by.css('my-app my-heroes')),
       allHeroes: element.all(by.css('my-app my-heroes li')),
       selectedHero: element(by.css('my-app li.selected')),
@@ -82,7 +82,7 @@ describe('Tutorial part 6', () => {
 
     const expectedViewNames = ['Dashboard', 'Heroes'];
     it(`has views ${expectedViewNames}`, () => {
-      let viewNames = getPageElts().hrefs.map((el: ElementFinder) => el.getText());
+      let viewNames = getPageElts().navElts.map((el: ElementFinder) => el.getText());
       expect(viewNames).toEqual(expectedViewNames);
     });
 

public/docs/_examples/toh-6/ts/app/dashboard.component.css

@@ -1,23 +1,26 @@
-/* #docplaster */
 /* #docregion */
 [class*='col-'] {
   float: left;
-}
-*, *:after, *:before {
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
-	box-sizing: border-box;
-}
-h3 {
-  text-align: center; margin-bottom: 0;
-}
-[class*='col-'] {
   padding-right: 20px;
   padding-bottom: 20px;
 }
 [class*='col-']:last-of-type {
   padding-right: 0;
 }
+a {
+  text-decoration: none;
+}
+*, *:after, *:before {
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+h3 {
+  text-align: center; margin-bottom: 0;
+}
+h4 {
+  position: relative;
+}
 .grid {
   margin: 0;
 }
@@ -25,16 +28,13 @@ h3 {
   width: 25%;
 }
 .module {
-	padding: 20px;
+  padding: 20px;
-	text-align: center;
+  text-align: center;
-	color: #eee;
+  color: #eee;
-	max-height: 120px;
+  max-height: 120px;
-	min-width: 120px;
+  min-width: 120px;
-	background-color: #607D8B;
+  background-color: #607D8B;
-	border-radius: 2px;
+  border-radius: 2px;
-}
-h4 {
-  position: relative;
 }
 .module:hover {
   background-color: #EEE;
@@ -48,16 +48,15 @@ h4 {
   padding-right: 20px;
 }
 @media (max-width: 600px) {
-	.module {
+  .module {
-	  font-size: 10px;
+    font-size: 10px;
-	  max-height: 75px; }
+    max-height: 75px; }
 }
 @media (max-width: 1024px) {
-	.grid {
+  .grid {
-	  margin: 0;
+    margin: 0;
-	}
+  }
-	.module {
+  .module {
-	  min-width: 60px;
+    min-width: 60px;
-	}
+  }
 }
-/* #enddocregion */

public/docs/_examples/toh-6/ts/app/dashboard.component.html

@@ -1,10 +1,10 @@
 <!-- #docregion -->
 <h3>Top Heroes</h3>
 <div class="grid grid-pad">
-  <div *ngFor="let hero of heroes" (click)="gotoDetail(hero)" class="col-1-4">
+  <a *ngFor="let hero of heroes"  [routerLink]="['/detail', hero.id]"  class="col-1-4">
     <div class="module hero">
       <h4>{{hero.name}}</h4>
     </div>
-  </div>
+  </a>
 </div>
 <hero-search></hero-search>

public/docs/_examples/toh-6/ts/app/dashboard.component.ts

@@ -1,6 +1,5 @@
 // #docregion , search
 import { Component, OnInit } from '@angular/core';
-import { Router }            from '@angular/router';
 
 import { Hero }        from './hero';
 import { HeroService } from './hero.service';
@@ -15,18 +14,10 @@ import { HeroService } from './hero.service';
 export class DashboardComponent implements OnInit {
   heroes: Hero[] = [];
 
-  constructor(
+  constructor(private heroService: HeroService) { }
-    private router: Router,
-    private heroService: HeroService) {
-  }
 
   ngOnInit(): void {
     this.heroService.getHeroes()
       .then(heroes => this.heroes = heroes.slice(1, 5));
   }
-
-  gotoDetail(hero: Hero): void {
-    let link = ['/detail', hero.id];
-    this.router.navigate(link);
-  }
 }

public/docs/ts/latest/tutorial/toh-pt5.jade

@@ -370,16 +370,12 @@ block redirect-vs-use-as-default
 :marked
   Create that file with this content:
 
-+makeExcerpt('app/dashboard.component.html')
++makeExample('app/dashboard.component.1.html', '', 'app/dashboard.component.html')
 
 :marked
   We use `*ngFor` once again to iterate over a list of heroes and display their names.
   We added extra `<div>` elements to help with styling later in this chapter.
 
-  There's a `(click)` binding to a `gotoDetail` method we haven't written yet and
-  we're displaying a list of heroes that we don't have.
-  We have work to do, starting with those heroes.
-
   ### Share the *HeroService*
 
   We'd like to re-use the `HeroService` to populate the component's `heroes` !{_array}.
@@ -394,12 +390,12 @@ block redirect-vs-use-as-default
 
   Open <span ngio-ex>dashboard.component.ts</span> and add the requisite `import` statements.
 
-+makeExcerpt('app/dashboard.component.2.ts','imports')
++makeExcerpt('app/dashboard.component.ts','imports')
 
 :marked
   Now implement the `DashboardComponent` class like this:
 
-+makeExcerpt('app/dashboard.component.2.ts (class)', 'component')
++makeExcerpt('app/dashboard.component.ts (class)', 'class')
 
 :marked
   We've seen this kind of logic before in the `HeroesComponent`:
@@ -408,8 +404,7 @@ block redirect-vs-use-as-default
   * Inject the `HeroService` in the constructor and hold it in a private `!{_priv}heroService` field.
   * Call the service to get heroes inside the Angular `ngOnInit` lifecycle hook.
 
-  The noteworthy differences: we cherry-pick four heroes (2nd, 3rd, 4th, and 5th)
+  In this dashboard we cherry-pick four heroes (2nd, 3rd, 4th, and 5th) with the `Array.slice` method.
-  and stub the `gotoDetail` method until we're ready to implement it.
 
   Refresh the browser and see four heroes in the new dashboard.
 
@@ -580,7 +575,7 @@ block extract-id
   incremental improvement and migrate the template to its own file,
   called <span ngio-ex>hero-detail.component.html</span>:
 
-+makeExample('app/hero-detail.component.html')
++makeExample('app/hero-detail.component.html')(format='.')
 
 :marked
   We update the component metadata with a `moduleId` and a `templateUrl` pointing to the template file that we just created.
@@ -596,32 +591,26 @@ block extract-id
 
   When a user selects a hero in the dashboard, the app should navigate to the `HeroDetailComponent` to view and edit the selected hero.
 
-  In the dashboard template we bound each hero's click event to the `gotoDetail` method, passing along the selected `hero` entity.
+  Although the dashboard heroes are presented as button-like blocks, they should behave like anchor tags.
+  When hovering over a hero block, the target URL should display in the browser status bar 
+  and the user should be able to copy the link or open the hero detail view in a new tab.
 
-+makeExcerpt('app/dashboard.component.html', 'click')
+  To achieve this effect, reopen the `dashboard.component.html` and replace the repeated `<div *ngFor...>` tags
+  with `<a>` tags. The opening `<a>` tag looks like this:
 
-:marked
++makeExample('app/dashboard.component.html', 'click', 'app/dashboard.component.html (repeated <a> tag)')
-  We stubbed the `gotoDetail` method when we rewrote the `DashboardComponent`.
-  Now we give it a real implementation.
-
-+makeExcerpt('app/dashboard.component.ts','gotoDetail')
 
 - var _pathVsName = _docsFor == 'dart' ? 'name' : 'path'
 :marked
-  The `gotoDetail` method navigates in two steps:
+  Notice the `[routerLink]` binding.
 
-  1. Set a route *link parameters !{_array}*
+  In the top level navigation in the [`AppComponent`
-  1. Pass the !{_array} to the router's navigate method
+  template](#router-links) has router links set to fixed !{_pathVsName}s of the
+  destination routes, "/dashboard" and "/heroes".
 
-  For navigation, we wrote router links <span if-docs="dart">as *link
+  This time, we're binding to an expression containing a **link parameters !{_array}**.
-  parameters !{_array}s*</span> in the [`AppComponent`
+  The !{_array} has two elements, the ***!{_pathVsName}*** of
-  template](#router-links).  Those link<span if-docs="dart"> parameters
+  the destination route and a ***route parameter*** set to the value of the current hero's `id`.
-  !{_array}</span>s had only one element, the !{_pathVsName} of the
-  destination route.
-
-  This link parameters !{_array} has two elements, the ***!{_pathVsName}*** of
-  the destination route and a ***route parameter*** <span if-docs="dart">with
-  an `id` field</span> set to the value of the selected hero's `id`.
 
   The two !{_array} items align with the ***!{_pathVsName}*** and ***:id***
   token in the parameterized hero detail route definition we added to
@@ -630,14 +619,6 @@ block extract-id
 - var _file = _docsFor == 'dart' ? 'app/app.component.ts' : 'app/app.module.3.ts'
 +makeExcerpt(_file + ' (hero detail)', 'hero-detail')
 
-:marked
-  The `DashboardComponent` doesn't have the router yet. We obtain it in the usual way:
-  import the `router` reference and inject it in the constructor (along with the `HeroService`):
-
-+makeExcerpt('app/dashboard.component.ts ()','import-router', '')
-
-+makeExcerpt('app/dashboard.component.ts', 'ctor', '')
-
 :marked
   Refresh the browser and select a hero from the dashboard; the app should navigate directly to that hero’s details.
 
@@ -703,14 +684,14 @@ block extract-id
 :marked
   Our goal is to move the detail to its own view and navigate to it when the user decides to edit a selected hero.
 
-  Delete the `<h1>` at the top (forgot about it during the `AppComponent`-to-`HeroesComponent` conversion).
+  Delete the `<h1>` at the top (we forgot about it during the `AppComponent`-to-`HeroesComponent` conversion).
 
   Delete the last line of the template with the `<my-hero-detail>` tags.
 
   We'll no longer show the full `HeroDetailComponent` here.
   We're going to display the hero detail on its own page and route to it as we did in the dashboard.
 
-  But we'll throw in a small twist for variety.
+  We'll throw in a small twist for variety.
   We are keeping the "master/detail" style but shrinking the detail to a "mini", read-only version.
   When the user selects a hero from the list, we *don't* go to the detail page.
   We show a *mini-detail* on *this* page instead and make the user click a button to navigate to the *full detail *page.
@@ -770,15 +751,25 @@ block heroes-component-cleanup
 +makeExcerpt('app/heroes.component.ts (revised metadata)', 'metadata')
 
 :marked
-  Now we can see what's going on as we update the component class along the same lines as the dashboard:
+  ### Update the _HeroesComponent_ class.
 
-  1. Import the `router`
+  The `HeroesComponent` navigates to the `HeroesDetailComponent` in response to a button click. 
+  The button's _click_ event is bound to a `gotoDetail` method that navigates _imperatively_
+  by telling the router where to go.
+
+  This approach requires some changes to the component class:
+
+  1. Import the `router` from the Angular router library
   1. Inject the `router` in the constructor (along with the `HeroService`)
-  1. Implement the `gotoDetail` method by calling the `router.navigate` method
+  1. Implement `gotoDetail` by calling the `router.navigate` method
 
-  with a two-part hero-detail link parameters !{_array}.
++makeExcerpt('app/heroes.component.ts', 'gotoDetail')
-
+:marked
-  Here's the revised component class:
+  Note that we're passing a two-element **link parameters !{_array}**
+  &mdash; a path and the route parameter &mdash; to
+  the `router.navigate` method just as we did in the `[routerLink]` binding
+  back in the `DashboardComponent`
+  Here's the fully revised `HeroesComponent` class:
 
 +makeExcerpt('app/heroes.component.ts', 'class')
 

scripts/config/bad-code-excerpt-skip-patterns.txt

@@ -5,3 +5,4 @@
 /ts/latest/guide/style-guide.html   # https://github.com/angular/angular.io/issues/2123
 /ts/latest/guide/upgrade.html       # In a transient state until RC6 - @filipe.silva
 /[jt]s/.*/api/forms/index/NG_VALIDATORS-let.html    # RC6 contains broken example tags
+/dart/latest/tutorial/toh-pt5.html