为什么我不能在react-router 4.x中嵌套Route组件？ [英] Why can I not nest Route components in react-router 4.x?

问题描述

世界上如何在 react-router 中使用嵌套路由，特别是版本4.x的？以下版本在以前的版本中运行良好...

How in the world does one use nested routes in react-router, specifically, version 4.x? The following worked well in previous versions...

<Route path='/stuff' component={Stuff}>
  <Route path='/stuff/a' component={StuffA} />
</Route>

升级到4.x会发出以下警告......

Upgrading to 4.x throws the following warning...

警告：您不应该使用< Route>组件和<路由子>在同一条路线上; <路线儿童>将被忽略

Warning: You should not use <Route> component and <Route children> in the same route; <Route children> will be ignored

这里到底发生了什么？我花了几个小时的时间来搜索文档，无法成功地使嵌套路由正常工作。如何使用< Route> 组件将其路由嵌套在react-router v4中？我的简单示例如何转换为嵌套路由的v4.x API合规性？

What in the heck is going on here? I've scoured the docs for hours and can not successfully get nested routes working. How does one use <Route>components to nest their routes in react-router v4? How does my simplistic example translate to v4.x API compliance to nest a route?

推荐答案

忘掉你对React Router<的了解; V4。您通过字面嵌套< Routes> 来嵌套路线。查看此示例。具体来说，请查看主题组件。您不会预先声明路线，而是在组件渲染时动态声明。

Forget what you know about React Router < v4. You nest routes by literally nesting <Routes>. Check this example. Specifically check out the Topics component. You don't declare your routes up front but instead dynamically when a component renders.

import React from 'react'
import {
  BrowserRouter as Router,
  Route,
  Link
} from 'react-router-dom'

const BasicExample = () => (
  <Router>
    <div>
      <ul>
        <li><Link to="/">Home</Link></li>
        <li><Link to="/about">About</Link></li>
        <li><Link to="/topics">Topics</Link></li>
      </ul>

      <hr/>

      <Route exact path="/" component={Home}/>
      <Route path="/about" component={About}/>
      <Route path="/topics" component={Topics}/>
    </div>
  </Router>
)

const Home = () => (
  <div>
    <h2>Home</h2>
  </div>
)

const About = () => (
  <div>
    <h2>About</h2>
  </div>
)

const Topics = ({ match }) => (
  <div>
    <h2>Topics</h2>
    <ul>
      <li>
        <Link to={`${match.url}/rendering`}>
          Rendering with React
        </Link>
      </li>
      <li>
        <Link to={`${match.url}/components`}>
          Components
        </Link>
      </li>
      <li>
        <Link to={`${match.url}/props-v-state`}>
          Props v. State
        </Link>
      </li>
    </ul>

    {/* NESTED ROUTES */}
    <Route path={`${match.url}/:topicId`} component={Topic}/>
    <Route exact path={match.url} render={() => (
      <h3>Please select a topic.</h3>
    )}/>
  </div>
)

const Topic = ({ match }) => (
  <div>
    <h3>{match.params.topicId}</h3>
  </div>
)

export default BasicExample

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