From: Kai Moritz <kai@juplo.de>
Date: Sun, 10 May 2020 20:42:52 +0000 (+0200)
Subject: Hero in HeroDetailComponent can be undefined: resetting prior to fetching
X-Git-Url: https://juplo.de/gitweb/?p=examples%2Fangular-tour-of-heroes;a=commitdiff_plain;h=cfdc1d228b90a65ef26d432b62504ee1c0ab0d04

Hero in HeroDetailComponent can be undefined: resetting prior to fetching
---

diff --git a/src/app/hero-detail/hero-detail.component.ts b/src/app/hero-detail/hero-detail.component.ts
index d4c7289..4bbfe2e 100644
--- a/src/app/hero-detail/hero-detail.component.ts
+++ b/src/app/hero-detail/hero-detail.component.ts
@@ -12,7 +12,7 @@ import { Hero } from '../hero';
 })
 export class HeroDetailComponent implements OnInit {
 
-  hero: Hero;
+  hero: Hero | undefined;
 
   constructor(
     private route: ActivatedRoute,
@@ -27,6 +27,7 @@ export class HeroDetailComponent implements OnInit {
   getHero(): void {
     this.route.params.subscribe(params => {
       const id: number = +params.id;
+      this.hero = undefined;
       this.heroService.getHero(id).subscribe(hero => this.hero = hero);
     });
   }