Angular5中提取公共组件之radio list

上一篇说到了Checkbox List的公共组件提取，现在说一下Radio List的公共组件提取。

Radio List组件提取起来很方便，不想Checkbox那么复杂。

radio-list.component.ts

 import { Component, OnInit, Input, Output, EventEmitter } from '@angular/core';
 import { RadioItem } from '../../model/radio';
 import { NgModel } from '@angular/forms';

 @Component({
     selector: 'app-radio-list',
     templateUrl: './radio-list.component.html',
     styleUrls: ['./radio-list.component.css']
 })
 export class RadioListComponent implements OnInit {
     @Input() list: RadioItem[];
     @Input() name: string;
     @Input() colNum: number = 6;
     @Input("selectModel") model: string;
     @Output("selectChange") onChange: EventEmitter<any> = new EventEmitter<any>();

     constructor() { }

     ngOnInit() {

     }
     changeSelected() {
         let data = { value: this.model, name: this.name };
         this.onChange.emit(data);
     }
 }

radio-list.component.html

 <div *ngIf="list" class="form-row">
     <div class="col-{{colNum}} mb-2" *ngFor="let item of list">
         <div class="form-check abc-radio abc-radio-primary">
             <input class="form-check-input" type="radio" [value]="item.id" [(ngModel)]="model" (change)="changeSelected()" name="{{name}}" id="{{name}}_{{item.id}}">
             <label class="form-check-label" for="{{name}}_{{item.id}}">
                 {{item.name}}
             </label>
         </div>
     </div>
 </div>

在相关引用的module中注册

 import { RadioListComponent } from '../components/radio-list/radio-list.component';
 export const routes = [
     { path: '', component: xxxComponent, pathMatch: 'full' }
 ];

 @NgModule({
     imports: [...],
     declarations: [...
         , RadioListComponent
         , ...],
     providers: []
 })
 export class xxxModule {
     static routes = routes;
 }

对应的html中引用如下：

 <app-radio-list [list]="sourceArr"
                 [name]="'selectedSource'"
                 [colNum]="12"
                 [(selectModel)]="selectedSource"
                 (selectChange)="selectChange($event)">
 </app-radio-list>

按照如上步骤，还缺少对应的selectChange($event):

 selectChange(model: any) {
     this[model.name] = model.value;
 }