From 2bc6210524272d3e16e42a45a314d6c5acbe4565 Mon Sep 17 00:00:00 2001
From: reedanj <james.r@unitaskr.com>
Date: Wed, 18 Mar 2026 20:08:14 +0000
Subject: [PATCH] feat: update user component to use input signal

---
 .../43-signal-input/src/app/user.component.ts | 24 ++++++++-----------
 1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/apps/signal/43-signal-input/src/app/user.component.ts b/apps/signal/43-signal-input/src/app/user.component.ts
index 553042ebb..5fd3a3c66 100644
--- a/apps/signal/43-signal-input/src/app/user.component.ts
+++ b/apps/signal/43-signal-input/src/app/user.component.ts
@@ -2,8 +2,9 @@ import { TitleCasePipe } from '@angular/common';
 import {
   ChangeDetectionStrategy,
   Component,
-  Input,
-  OnChanges,
+  computed,
+  input,
+  numberAttribute,
 } from '@angular/core';
 
 type Category = 'Youth' | 'Junior' | 'Open' | 'Senior';
@@ -18,23 +19,18 @@ const ageToCategory = (age: number): Category => {
   selector: 'app-user',
   imports: [TitleCasePipe],
   template: `
-    {{ fullName | titlecase }} plays tennis in the {{ category }} category!!
+    {{ fullName() | titlecase }} plays tennis in the {{ category() }} category!!
   `,
   host: {
     class: 'text-xl text-green-800',
   },
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class UserComponent implements OnChanges {
-  @Input({ required: true }) name!: string;
-  @Input() lastName?: string;
-  @Input() age?: string;
+export class UserComponent {
+  readonly name = input.required<string>();
+  readonly lastName = input<string>();
+  readonly age = input(0, { transform: numberAttribute });
 
-  fullName = '';
-  category: Category = 'Junior';
-
-  ngOnChanges(): void {
-    this.fullName = `${this.name} ${this.lastName ?? ''}`;
-    this.category = ageToCategory(Number(this.age));
-  }
+  fullName = computed<string>(() => `${this.name()} ${this.lastName() ?? ''}`);
+  category = computed<Category>(() => ageToCategory(this.age()));
 }