Angular 4 子路由器未加载

Question

在我的应用程序中，我使用了三个组件来显示路由器。

export const routing = RouterModule.forRoot([
   { path: '', component: HomeListComponent },
   { path: 'badge', component: BadgeListComponent},
   { path: 'badge-form', component: BadgeFormComponent },
   { path: 'badge-form/:id', component: BadgeFormComponent }
]);

因为我想在 url 中有这样的东西 /badge/badge-form 而不是 /badge-form 当我进入表单时我将路由配置更改为 :

{ path: '', component: HomeListComponent },
{
    path: 'badge',
    component: BadgeListComponent,
    children: [
        { path: 'badge-form', component: BadgeFormComponent },
        { path: 'badge-form/:id', component: BadgeFormComponent }
    ]
}

不幸的是，它不起作用，我无法找到原因，它总是加载 BadgeListComponent，即使我去 /badge/badge-form url。

HTML BadgeListComponent 代码：

<div class="material-card-wide mdl-card mdl-shadow--2dp">
  <div class="mdl-card__title mdl-card--border">
    <h2 class="mdl-card__title-text">{{ title }}</h2>
  </div>
  <div class="list-card-body">
    <table class="data-table-format">
      <thead>
        <tr>
          <th>badgeNumber</th>
          <th>authorizationLevel</th>
          <th>endOfValidity</th>
          <th></th>
        </tr>
      </thead>
      <tbody>
        <tr *ngFor="let badge of pagedItems" (click)="editBadge(badge.badge_badgeNumber)">
          <th>{{ badge.badge_badgeNumber }}</th>
          <th>{{ badge.badge_authorizationLevel }}</th>
          <th>{{ badge.badge_endOfValidity }}</th>
          <td width="5%" (click)="deleteConfirmation(badge.badge_badgeNumber); $event.stopPropagation();">
            <i class="material-icons delete-data-icon">delete_forever</i>
          </td>
        </tr>
      </tbody>
    </table>
  </div>

  <!-- pager -->
  <div class="mdl-paging" *ngIf="pager.pages && pager.pages.length">
    <button [disabled]="pager.currentPage === 1"
      class="mdl-button mdl-js-button mdl-js-ripple-effect mdl-button--icon"
      (click)="setPage(pager.currentPage - 1)">
      <i class="material-icons">keyboard_arrow_left</i>
    </button>
    <a *ngFor="let page of pager.pages" 
      [class.selected]="pager.currentPage === page"
      class="mdl-button mdl-js-button mdl-js-ripple-effect mdl-button--icon"
      (click)="setPage(page)">
      {{ page }}
    </a>
    <button [disabled]="pager.currentPage === pager.totalPages" 
      class="mdl-button mdl-js-button mdl-js-ripple-effect mdl-button--icon"
      (click)="setPage(pager.currentPage + 1)">
      <i class="material-icons">keyboard_arrow_right</i>
    </button>
    <br />
    <span class="paginationStats">Pages {{ pager.startPage }}-{{ this.pager.endPage }} of {{ pager.totalPages }}</span>
  </div>
  <div class="mdl-card__actions mdl-card--border">
    <div class="buttonHolder">
      <button routerLink="../badge-form" class="mdl-button mdl-js-button mdl-js-ripple-effect mdl-button--primary" *ngIf="!editing">
        Add
      </button>
    </div>
  </div>
</div>

Answer 1

你的BadgeFormComponent有没有错误？它可能会阻止组件之间的转换，让您停留在父组件中 BadgeListComponent.

对了，我建议你这样切换子路由：

...
children: [
    { path: 'badge-form/:id', component: BadgeFormComponent },
    { path: 'badge-form', component: BadgeFormComponent }
]
...

因为Angular 路由器采用与其中一条路径匹配的第一条路由。由于您有带参数和不带参数的路径，我想参数是可选的。

如果您在 BadgeFormComponent 中遇到问题，请告诉我。

Answer 2

当您导航到 /badge/badge-form 时，您当前的配置会告诉 Angular 路由器通过匹配 /badge 呈现 BadgeListComponent，然后在 BadgeListComponent的<router-outlet>.

您需要一个无组件路由来只渲染子项。

{ path: '', component: HomeListComponent },
{
    path: 'badge',
    children: [
        { path: '', component: BadgeListComponent },
        { path: 'badge-form', component: BadgeFormComponent },
        { path: 'badge-form/:id', component: BadgeFormComponent }
    ]
}

Angular 4 子路由器未加载

Angular 4 Children router not loading

javascript

typescript

angular-routing

angular