angular - 刷新 HTML 组件 Angular 6

Question

我正在使用 Angular 6，我有以下组件

MainComponent.ts 在 ngOnInit 上有以下代码:

ngOnInit() {
   console.log('OnInit');    
   this.route.params.subscribe(params => {
     if (params['id'] != null) {
       this.id= params['id']
     }
   });
 }

然后是 MainComponent.HTML

<DataComponent [id]="id"></DataComponent>
<TableComponent [id]="id"></TableComponent>
<FieldComponent [id]="id"></FieldComponent>

路线是:http://localhost:4200/Data/77

一切都很完美，直到我需要克隆或更改 ID，所以我需要 MainComponent 刷新所有 ID。 我做了以下代码:

this.router.navigate(['/Data', result.id_cloned_data]);

编辑: 路线

const appRoutes: Routes = [
  { 
    path: 'Formula/:idFormula',
    component: FormulaMainComponent,
    pathMatch: 'full'
   },
  { path: 'Formula', component: FormulaMainComponent, pathMatch: 'full' },
  { path: '', component: FormulaMainComponent, pathMatch: 'full' }
];

URL 更改为，例如:http://localhost:4200/Data/399但 MainComponent 不刷新。 我做了一个 EventEmitter 将新 ID 传递给 MainComponent，但它仍然不起作用，而且我已经尝试过 AppRoutes onSameUrlNavigation: 'reload'。

我做错了什么？是不是要重新加载，让每个组件调用其Get from API？

Answer 1

变体 1:

public bookId$: Observable<string> // 'id' is bad name for variable, remember about code readability;

ngOnInit() {  
    this.bookId$ = this.activatedRoute.paramMap.pipe(
      map((param) => {
        return param.get('BOOK_ID');
      }),
    );
 }

组件模板:

<DataComponent [bookId]="bookId$ | async"></DataComponent>
<TableComponent [bookId]="bookId$| async"></TableComponent>
<FieldComponent [bookId]="bookId$ | async"></FieldComponent>.

变体 2:

1)DataComponent的模板:

<router-outlet></router-outlet>

2)路由器配置示例:

  {
    children: [
      {
        component: DataChildComponent,
        path: ':BOOK_ID',
      },
    ],
    component: DataComponent,
    path: 'Data',
  },

3)DataChildComponent的模板:

<DataComponent [bookId]="bookId$ | async"></DataComponent>
<TableComponent [bookId]="bookId$| async"></TableComponent>
<FieldComponent [bookId]="bookId$ | async"></FieldComponent>

4)DataChildComponent:

public bookId$: Observable<string>;

ngOnInit() {  
    this.bookId$ = this.activatedRoute.paramMap.pipe(
      map((param) => {
        return param.get('BOOK_ID');
      }),
    );
 }

希望对你有帮助!