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Answer:43 using signal input #1163

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Answer:43 using signal input #1163

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23 changes: 9 additions & 14 deletions apps/signal/43-signal-input/src/app/user.component.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,8 @@ import { TitleCasePipe } from '@angular/common';
import {
ChangeDetectionStrategy,
Component,
Input,
OnChanges,
computed,
input,
} from '@angular/core';

type Category = 'Youth' | 'Junior' | 'Open' | 'Senior';
Expand All @@ -19,23 +19,18 @@ const ageToCategory = (age: number): Category => {
standalone: true,
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 {
name = input.required<string>();
lastName = input<string | undefined>(undefined);
age = input<string | undefined>(undefined);

fullName = '';
category: Category = 'Junior';

ngOnChanges(): void {
this.fullName = `${this.name} ${this.lastName ?? ''}`;
this.category = ageToCategory(Number(this.age) ?? 0);
}
fullName = computed(() => `${this.name()} ${this.lastName() ?? ''}`);
category = computed(() => ageToCategory(Number(this.age()) ?? 0));
}
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