ion-route

路由组件采用一个组件，并在浏览器 URL 与 url 属性匹配时渲染它。

🌐 The route component takes a component and renders it when the Browser URL matches the url property.

note

注意：此组件应仅用于原生和 Stencil JavaScript 项目。对于 Angular 项目，请使用 ion-router-outlet 和 Angular 路由。

🌐 Navigation Hooks

导航钩子可以用来执行任务或充当导航守卫。钩子通过为每个 ion-route 的 beforeEnter 和 beforeLeave 属性提供函数来使用。返回 true 允许导航继续，而返回 false 会导致导航被取消。返回类型为 NavigationHookOptions 的对象可以让你重定向导航到另一个页面。

🌐 Navigation hooks can be used to perform tasks or act as navigation guards. Hooks are used by providing functions to the beforeEnter and beforeLeave properties on each ion-route. Returning true allows navigation to proceed, while returning false causes it to be cancelled. Returning an object of type NavigationHookOptions allows you to redirect navigation to another page.

接口

🌐 Interfaces

interface NavigationHookOptions {
  /**
   * A valid path to redirect navigation to.
   */
  redirect: string;
}

用法

🌐 Usage

Javascript
Stencil
Vue

<ion-router>
  <ion-route url="/home" component="page-home"></ion-route>
  <ion-route url="/dashboard" component="page-dashboard"></ion-route>
  <ion-route url="/new-message" component="page-new-message"></ion-route>
  <ion-route url="/login" component="page-login"></ion-route>
</ion-router>

const dashboardPage = document.querySelector('ion-route[url="/dashboard"]');
dashboardPage.beforeEnter = isLoggedInGuard;

const newMessagePage = document.querySelector('ion-route[url="/dashboard"]');
newMessagePage.beforeLeave = hasUnsavedDataGuard;

const isLoggedInGuard = async () => {
  const isLoggedIn = await UserData.isLoggedIn(); // Replace this with actual login validation
  
  if (isLoggedIn) {
    return true;
  } else {
    return { redirect: '/login' }; // If a user is not logged in, they will be redirected to the /login page
  }
}

const hasUnsavedDataGuard = async () => {
  const hasUnsavedData = await checkData(); // Replace this with actual validation
  
  if (hasUnsavedData) {
    return await confirmDiscardChanges();
  } else {
    return true;
  }
}

const confirmDiscardChanges = async () => {
  const alert = document.createElement('ion-alert');
  alert.header = 'Discard Unsaved Changes?';
  alert.message = 'Are you sure you want to leave? Any unsaved changed will be lost.';
  alert.buttons = [
    {
      text: 'Cancel',
      role: 'Cancel',
    },
    {
      text: 'Discard',
      role: 'destructive',
    }
  ];
  
  document.body.appendChild(alert);
  
  await alert.present();
  
  const { role } = await alert.onDidDismiss();
  
  return (role === 'Cancel') ? false : true;
}

import { Component, h } from '@stencil/core';
import { alertController } from '@ionic/core';

@Component({
  tag: 'router-example',
  styleUrl: 'router-example.css'
})
export class RouterExample {
  render() {
    return (
      <ion-router>
        <ion-route url="/home" component="page-home"></ion-route>
        <ion-route url="/dashboard" component="page-dashboard" beforeEnter={isLoggedInGuard}></ion-route>
        <ion-route url="/new-message" component="page-new-message" beforeLeave={hasUnsavedDataGuard}></ion-route>
        <ion-route url="/login" component="page-login"></ion-route>
      </ion-router>
    )
  }
}

const isLoggedInGuard = async () => {
  const isLoggedIn = await UserData.isLoggedIn(); // Replace this with actual login validation
  
  if (isLoggedIn) {
    return true;
  } else {
    return { redirect: '/login' }; // If a user is not logged in, they will be redirected to the /login page
  }
}

const hasUnsavedDataGuard = async () => {
  const hasUnsavedData = await checkData(); // Replace this with actual validation
  
  if (hasUnsavedData) {
    return await confirmDiscardChanges();
  } else {
    return true;
  }
}

const confirmDiscardChanges = async () => {
  const alert = await alertController.create({
    header: 'Discard Unsaved Changes?',
    message: 'Are you sure you want to leave? Any unsaved changed will be lost.',
    buttons: [
      {
        text: 'Cancel',
        role: 'Cancel',
      },
      {
        text: 'Discard',
        role: 'destructive',
      }
    ]
  });
  
  await alert.present();
  
  const { role } = await alert.onDidDismiss();
  
  return (role === 'Cancel') ? false : true;
}

<template>
  <ion-router>
    <ion-route url="/home" component="page-home"></ion-route>
    <ion-route url="/dashboard" component="page-dashboard" :beforeEnter="isLoggedInGuard"></ion-route>
    <ion-route url="/new-message" component="page-new-message" :beforeLeave="hasUnsavedDataGuard"></ion-route>
    <ion-route url="/login" component="page-login"></ion-route>
  </ion-router>
</template>

<script>
  import { alertController } from '@ionic/vue';

  const isLoggedInGuard = async () => {
    const isLoggedIn = await UserData.isLoggedIn(); // Replace this with actual login validation
    
    if (isLoggedIn) {
      return true;
    } else {
      return { redirect: '/login' }; // If a user is not logged in, they will be redirected to the /login page
    }
  }
  
  const hasUnsavedDataGuard = async () => {
    const hasUnsavedData = await checkData(); // Replace this with actual validation
    
    if (hasUnsavedData) {
      return await confirmDiscardChanges();
    } else {
      return true;
    }
  }
  
  const confirmDiscardChanges = async () => {
    const alert = await alertController.create({
      header: 'Discard Unsaved Changes?',
      message: 'Are you sure you want to leave? Any unsaved changed will be lost.',
      buttons: [
        {
          text: 'Cancel',
          role: 'Cancel',
        },
        {
          text: 'Discard',
          role: 'destructive',
        }
      ]
    });
    
    await alert.present();
    
    const { role } = await alert.onDidDismiss();
    
    return (role === 'Cancel') ? false : true;
  }
</script>

属性

🌐 Properties

beforeEnter

Description	A navigation hook that is fired when the route tries to enter. Returning `true` allows the navigation to proceed, while returning `false` causes it to be cancelled. Returning a `NavigationHookOptions` object causes the router to redirect to the path specified.
Attribute	`undefined`
Type	`(() => NavigationHookResult ｜ Promise<NavigationHookResult>) ｜ undefined`
Default	`undefined`

beforeLeave

Description	A navigation hook that is fired when the route tries to leave. Returning `true` allows the navigation to proceed, while returning `false` causes it to be cancelled. Returning a `NavigationHookOptions` object causes the router to redirect to the path specified.
Attribute	`undefined`
Type	`(() => NavigationHookResult ｜ Promise<NavigationHookResult>) ｜ undefined`
Default	`undefined`

component

Description	Name of the component to load/select in the navigation outlet (`ion-tabs`, `ion-nav`) when the route matches. The value of this property is not always the tagname of the component to load, in `ion-tabs` it actually refers to the name of the `ion-tab` to select.
Attribute	`component`
Type	`string`
Default	`undefined`

componentProps

Description	A key value `{ 'red': true, 'blue': 'white'}` containing props that should be passed to the defined component when rendered.
Attribute	`undefined`
Type	`undefined ｜ { [key: string]: any; }`
Default	`undefined`

url

Description	Relative path that needs to match in order for this route to apply. Accepts paths similar to expressjs so that you can define parameters in the url /foo/:bar where bar would be available in incoming props.
Attribute	`url`
Type	`string`
Default	`''`

事件

🌐 Events

Name	Description	Bubbles
`ionRouteDataChanged`	Used internally by `ion-router` to know when this route did change.	`true`

方法

🌐 Methods

No public methods available for this component.

CSS 阴影部分

🌐 CSS Shadow Parts

No CSS shadow parts available for this component.

CSS 自定义属性

🌐 CSS Custom Properties

No CSS custom properties available for this component.

插槽

🌐 Slots

No slots available for this component.

导航钩子​

接口​

用法​

属性​

beforeEnter​

beforeLeave​

component​

componentProps​

url​

事件​

方法​

CSS 阴影部分​

CSS 自定义属性​

插槽​

目录

导航钩子

接口

用法

属性