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版本:v7

ion-route-redirect

路由重定向组件只能作为 ion-router 的直接子组件使用。

备注

注意:此组件仅适用于原生 JavaScript 和 Stencil 项目。对于 Angular 项目,请使用 ion-router-outlet 和 Angular 路由器。

路由重定向包含两个可配置属性:

  • from
  • to

它用于将 URL 从 "from" 路径重定向到 "to" 路径。当定义的 ion-route-redirect 规则匹配时,路由器会将 from 属性指定的路径重定向到 to 属性的路径。重定向发生时,from 路径必须与导航的 URL 完全匹配。

多个路由重定向

可以在 ion-router 内定义任意数量的重定向路由,但只会匹配其中一个。

一个路由重定向在自身重定向后,永远不会调用另一个重定向,因为这可能导致无限循环。

请看以下两个重定向:

<ion-router>
<ion-route-redirect from="/admin" to="/login"></ion-route-redirect>
<ion-route-redirect from="/login" to="/admin"></ion-route-redirect>
</ion-router>

如果用户导航到 /admin,路由器将重定向到 /login 并在此停止。它不会评估多个重定向。

使用方法

<!-- 当用户导航到 `/admin` 时重定向,
但如果用户导航到 `/admin/posts` 则不会重定向 -->
<ion-route-redirect from="/admin" to="/login"></ion-route-redirect>

<!-- 通过添加通配符 (*),重定向将匹配
admin 的任何子路径 -->
<ion-route-redirect from="/admin/*" to="/login"></ion-route-redirect>

路由重定向作为守卫

重定向路由可以作为守卫,根据特定条件(例如用户是否已认证)防止用户导航到应用程序的某些区域。

可以动态添加和移除路由重定向,以重定向(或守卫)某些路由,防止被访问。在以下示例中,如果 isLoggedInfalse,则所有 URL * 都将重定向到 /login

const isLoggedIn = false;

const router = document.querySelector('ion-router');
const routeRedirect = document.createElement('ion-route-redirect');
routeRedirect.setAttribute('from', '*');
routeRedirect.setAttribute('to', '/login');

if (!isLoggedIn) {
router.appendChild(routeRedirect);
}

或者,可以根据条件修改 to 的值。在以下示例中,路由重定向将检查用户是否已登录,如果未登录则重定向到 /login

<ion-route-redirect id="tutorialRedirect" from="*"></ion-route-redirect>
const isLoggedIn = false;
const routeRedirect = document.querySelector('#tutorialRedirect');

routeRedirect.setAttribute('to', isLoggedIn ? undefined : '/login');

属性

from

DescriptionA redirect route, redirects "from" a URL "to" another URL. This property is that "from" URL. It needs to be an exact match of the navigated URL in order to apply.

The path specified in this value is always an absolute path, even if the initial / slash is not specified.
Attributefrom
Typestring
Defaultundefined

to

DescriptionA redirect route, redirects "from" a URL "to" another URL. This property is that "to" URL. When the defined ion-route-redirect rule matches, the router will redirect to the path specified in this property.

The value of this property is always an absolute path inside the scope of routes defined in ion-router it can't be used with another router or to perform a redirection to a different domain.

Note that this is a virtual redirect, it will not cause a real browser refresh, again, it's a redirect inside the context of ion-router.

When this property is not specified or his value is undefined the whole redirect route is noop, even if the "from" value matches.
Attributeto
Typenull | string | undefined
Defaultundefined

事件

NameDescriptionBubbles
ionRouteRedirectChangedInternal event that fires when any value of this rule is added/removed from the DOM, or any of his public properties changes.

ion-router captures this event in order to update his internal registry of router rules.
true

方法

No public methods available for this component.

CSS Shadow Parts

No CSS shadow parts available for this component.

CSS 自定义属性

No CSS custom properties available for this component.

插槽

No slots available for this component.