Angular (Angular 4) RouterLinkActive 用于菜单和子菜单配置

Question

我的应用有一个菜单和一个子菜单。当他们点击菜单时，我需要该菜单项和第一个子菜单项处于“活动状态”。

-------------------------
|   A   |   B   |   C   |
-------------------------
| 1 | 2 | 3 | 4 | 5 | 6 |
-------------------------

例如，如果我选择A，那么A 和1 都是“活动的”。如果我选择B，那么B 和1 都是“活动的”。 C 也一样。

路线

const subMenuRoutes: Routes = [
  { path: '0', component: ContentComponent }, 
  { path: '1', component: ContentComponent },
  { path: '2', component: ContentComponent },
  { path: '3', component: ContentComponent },
  { path: '4', component: ContentComponent },
  { path: '5', component: ContentComponent },
  { path: '6', component: ContentComponent },
];

const menuRoutes: Routes = [
  { path: 'A', component: SubMenuComponent, children: subMenuRoutes }, 
  { path: 'B', component: SubMenuComponent, children: subMenuRoutes },
  { path: 'C', component: SubMenuComponent, children: subMenuRoutes },
];

菜单链接

links = [
  new Link('A', ['/A', '1']),
  new Link('B', ['/B', '1']),
  new Link('C', ['/C', '1']),
];

子菜单链接

links = [
  new Link('1', ['1']),
  new Link('2', ['2']),
  new Link('3', ['3']),
  new Link('4', ['4']),
  new Link('5', ['5']),
  new Link('6', ['6']),
];

通过此设置，点击A 将转到/A/1，并且A 和1 都处于“活动状态”。但是当我点击子菜单时，说2，然后A 不再“活跃”，因为它与/A/1 匹配（这是有道理的，这就是它所链接的）。

有没有办法指定我只想匹配A？

https://embed.plnkr.co/BQKy67J2OfVskmwPbTDl

Answer 1

问题在于您的路由和Link 的定义。您应该只定义链接中的父组件。否则它只匹配(A|B|C)/1。

links = [
  new Link('A', ['/A']),
  new Link('B', ['/B']),
  new Link('C', ['/C']),
];

然后在您的子路由中使用redirectTo。

const subMenuRoutes: Routes = [
  { path: '',  pathMatch: 'full', redirectTo: '1' }
  { path: '0', component: ContentComponent }, 
  { path: '1', component: ContentComponent },
  { path: '2', component: ContentComponent },
  { path: '3', component: ContentComponent },
  { path: '4', component: ContentComponent },
  { path: '5', component: ContentComponent },
  { path: '6', component: ContentComponent },
];

你也不必直接重定向到子路由；重定向到父级，让它处理重定向到子路由。在我看来，这种方式更加模块化。

const menuRoutes: Routes = [
  { path: 'A', component: SubMenuComponent, children: subMenuRoutes }, 
  { path: 'B', component: SubMenuComponent, children: subMenuRoutes },
  { path: 'C', component: SubMenuComponent, children: subMenuRoutes },
  { path: '**', redirectTo: 'A' }
];

检查edited plunkr。