我目前正在努力使用react路由器v4嵌套路由。
中的路由配置是最接近的例子
React-Router v4文档。
我想把我的应用程序分成2个不同的部分。
一个前台和一个管理区域。
我在想这样的事情:
<Match pattern="/" component={Frontpage}>
<Match pattern="/home" component={HomePage} />
<Match pattern="/about" component={AboutPage} />
</Match>
<Match pattern="/admin" component={Backend}>
<Match pattern="/home" component={Dashboard} />
<Match pattern="/users" component={UserPage} />
</Match>
<Miss component={NotFoundPage} />
前端的布局和风格与管理区域不同。在frontpage中，home, about，还有一个应该是子路由。
/home应该呈现在Frontpage组件中，/admin/home应该呈现在Backend组件中。
我尝试了一些其他的变化，但我总是以不点击/home或/admin/home结束。
最终解决方案:
这是我现在使用的最终解决方案。这个例子还有一个全局错误组件，就像传统的404页面一样。
import React, { Component } from 'react';
import { Switch, Route, Redirect, Link } from 'react-router-dom';
const Home = () => <div><h1>Home</h1></div>;
const User = () => <div><h1>User</h1></div>;
const Error = () => <div><h1>Error</h1></div>
const Frontend = props => {
console.log('Frontend');
return (
<div>
<h2>Frontend</h2>
<p><Link to="/">Root</Link></p>
<p><Link to="/user">User</Link></p>
<p><Link to="/admin">Backend</Link></p>
<p><Link to="/the-route-is-swiggity-swoute">Swiggity swooty</Link></p>
<Switch>
<Route exact path='/' component={Home}/>
<Route path='/user' component={User}/>
<Redirect to={{
state: { error: true }
}} />
</Switch>
<footer>Bottom</footer>
</div>
);
}
const Backend = props => {
console.log('Backend');
return (
<div>
<h2>Backend</h2>
<p><Link to="/admin">Root</Link></p>
<p><Link to="/admin/user">User</Link></p>
<p><Link to="/">Frontend</Link></p>
<p><Link to="/admin/the-route-is-swiggity-swoute">Swiggity swooty</Link></p>
<Switch>
<Route exact path='/admin' component={Home}/>
<Route path='/admin/user' component={User}/>
<Redirect to={{
state: { error: true }
}} />
</Switch>
<footer>Bottom</footer>
</div>
);
}
class GlobalErrorSwitch extends Component {
previousLocation = this.props.location
componentWillUpdate(nextProps) {
const { location } = this.props;
if (nextProps.history.action !== 'POP'
&& (!location.state || !location.state.error)) {
this.previousLocation = this.props.location
};
}
render() {
const { location } = this.props;
const isError = !!(
location.state &&
location.state.error &&
this.previousLocation !== location // not initial render
)
return (
<div>
{
isError
? <Route component={Error} />
: <Switch location={isError ? this.previousLocation : location}>
<Route path="/admin" component={Backend} />
<Route path="/" component={Frontend} />
</Switch>}
</div>
)
}
}
class App extends Component {
render() {
return <Route component={GlobalErrorSwitch} />
}
}
export default App;
只是想提一下，自从这个问题发布/回答后，react-router v4发生了根本性的变化。
没有<Match>组件了!<开关>是确保只呈现第一个匹配。<重定向>好..重定向到另一条路由。使用或省略精确来嵌入或排除部分匹配。
去看医生。他们很棒。https://reacttraining.com/react-router/
这里有一个例子，我希望对回答你的问题有用。
<Router>
<div>
<Redirect exact from='/' to='/front'/>
<Route path="/" render={() => {
return (
<div>
<h2>Home menu</h2>
<Link to="/front">front</Link>
<Link to="/back">back</Link>
</div>
);
}} />
<Route path="/front" render={() => {
return (
<div>
<h2>front menu</h2>
<Link to="/front/help">help</Link>
<Link to="/front/about">about</Link>
</div>
);
}} />
<Route exact path="/front/help" render={() => {
return <h2>front help</h2>;
}} />
<Route exact path="/front/about" render={() => {
return <h2>front about</h2>;
}} />
<Route path="/back" render={() => {
return (
<div>
<h2>back menu</h2>
<Link to="/back/help">help</Link>
<Link to="/back/about">about</Link>
</div>
);
}} />
<Route exact path="/back/help" render={() => {
return <h2>back help</h2>;
}} />
<Route exact path="/back/about" render={() => {
return <h2>back about</h2>;
}} />
</div>
</Router>
希望有帮助，请告诉我。如果这个例子不能很好地回答你的问题，请告诉我，我看看是否可以修改它。
在react-router-v4中，不嵌套<Routes />。相反，将它们放在另一个<Component />中。
例如
<Route path='/topics' component={Topics}>
<Route path='/topics/:topicId' component={Topic} />
</Route>
应该成为
<Route path='/topics' component={Topics} />
with
const Topics = ({ match }) => (
<div>
<h2>Topics</h2>
<Link to={`${match.url}/exampleTopicId`}>
Example topic
</Link>
<Route path={`${match.path}/:topicId`} component={Topic}/>
</div>
)
下面是一个直接来自react-router文档的基本示例。
你可以试试
Routes.js
import React, { Component } from 'react'
import { BrowserRouter as Router, Route } from 'react-router-dom';
import FrontPage from './FrontPage';
import Dashboard from './Dashboard';
import AboutPage from './AboutPage';
import Backend from './Backend';
import Homepage from './Homepage';
import UserPage from './UserPage';
class Routes extends Component {
render() {
return (
<div>
<Route exact path="/" component={FrontPage} />
<Route exact path="/home" component={Homepage} />
<Route exact path="/about" component={AboutPage} />
<Route exact path="/admin" component={Backend} />
<Route exact path="/admin/home" component={Dashboard} />
<Route exact path="/users" component={UserPage} />
</div>
)
}
}
export default Routes
App.js
import React, { Component } from 'react';
import logo from './logo.svg';
import './App.css';
import { BrowserRouter as Router, Route } from 'react-router-dom'
import Routes from './Routes';
class App extends Component {
render() {
return (
<div className="App">
<Router>
<Routes/>
</Router>
</div>
);
}
}
export default App;
我认为你在这里也可以达到同样的效果。
react-router v6
更新2022 - v6有嵌套的路由组件Just Work™。
这个问题是关于v4/v5的，但是现在最好的答案是如果可以的话只使用v6 !
参见本博客文章中的示例代码。如果你现在还不能升级，然而…
React-router v4和v5
的确，为了嵌套路由，你需要把它们放在路由的子组件中。
然而，如果你更喜欢内联语法，而不是把你的Route分解成不同的组件，你可以为你想要嵌套的Route的渲染道具提供一个功能组件。
<BrowserRouter>
<Route path="/" component={Frontpage} exact />
<Route path="/home" component={HomePage} />
<Route path="/about" component={AboutPage} />
<Route
path="/admin"
render={({ match: { url } }) => (
<>
<Route path={`${url}/`} component={Backend} exact />
<Route path={`${url}/home`} component={Dashboard} />
<Route path={`${url}/users`} component={UserPage} />
</>
)}
/>
</BrowserRouter>
如果您对为什么应该使用呈现道具而不是组件道具感兴趣，那是因为它会阻止在每次呈现时重新安装内联功能组件。有关详细信息，请参阅文档。
注意，这个例子将嵌套路由封装在一个片段中。在React 16之前，你可以使用容器<div>。
React路由器v6
允许使用嵌套路由(如v3)和分离的、分离的路由(v4, v5)。
嵌套的路线
对于小/中型应用，将所有路由放在一个地方:
<Routes>
<Route path="/" element={<Home />} >
<Route path="user" element={<User />} />
<Route path="dash" element={<Dashboard />} />
</Route>
</Routes>
const App = () => {
return (
<BrowserRouter>
<Routes>
// /js is start path of stack snippet
<Route path="/js" element={<Home />} >
<Route path="user" element={<User />} />
<Route path="dash" element={<Dashboard />} />
</Route>
</Routes>
</BrowserRouter>
);
}
const Home = () => {
const location = useLocation()
return (
<div>
<p>URL path: {location.pathname}</p>
<Outlet />
<p>
<Link to="user" style={{paddingRight: "10px"}}>user</Link>
<Link to="dash">dashboard</Link>
</p>
</div>
)
}
const User = () => <div>User profile</div>
const Dashboard = () => <div>Dashboard</div>
ReactDOM.render(<App />, document.getElementById("root"));
<div id="root"></div>
<script src="https://unpkg.com/react@16.13.1/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom@16.13.1/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/history@5.0.0/umd/history.production.min.js"></script>
<script src="https://unpkg.com/react-router@6.0.0-alpha.5/umd/react-router.production.min.js"></script>
<script src="https://unpkg.com/react-router-dom@6.0.0-alpha.5/umd/react-router-dom.production.min.js"></script>
<script>var { BrowserRouter, Routes, Route, Link, Outlet, useNavigate, useLocation } = window.ReactRouterDOM;</script>
替代方案:通过useRoutes将路由定义为纯JavaScript对象。
单独的通道
你可以使用分离路由来满足大型应用程序的需求，比如代码拆分:
// inside App.jsx:
<Routes>
<Route path="/*" element={<Home />} />
</Routes>
// inside Home.jsx:
<Routes>
<Route path="user" element={<User />} />
<Route path="dash" element={<Dashboard />} />
</Routes>
const App = () => {
return (
<BrowserRouter>
<Routes>
// /js is start path of stack snippet
<Route path="/js/*" element={<Home />} />
</Routes>
</BrowserRouter>
);
}
const Home = () => {
const location = useLocation()
return (
<div>
<p>URL path: {location.pathname}</p>
<Routes>
<Route path="user" element={<User />} />
<Route path="dash" element={<Dashboard />} />
</Routes>
<p>
<Link to="user" style={{paddingRight: "5px"}}>user</Link>
<Link to="dash">dashboard</Link>
</p>
</div>
)
}
const User = () => <div>User profile</div>
const Dashboard = () => <div>Dashboard</div>
ReactDOM.render(<App />, document.getElementById("root"));
<div id="root"></div>
<script src="https://unpkg.com/react@16.13.1/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom@16.13.1/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/history@5.0.0/umd/history.production.min.js"></script>
<script src="https://unpkg.com/react-router@6.0.0-alpha.5/umd/react-router.production.min.js"></script>
<script src="https://unpkg.com/react-router-dom@6.0.0-alpha.5/umd/react-router-dom.production.min.js"></script>
<script>var { BrowserRouter, Routes, Route, Link, Outlet, useNavigate, useLocation } = window.ReactRouterDOM;</script>
一个完整的React路由器v6或版本6的答案，以防万一。
import Dashboard from "./dashboard/Dashboard";
import DashboardDefaultContent from "./dashboard/dashboard-default-content";
import { Route, Routes } from "react-router";
import { useRoutes } from "react-router-dom";
/*Routes is used to be Switch*/
const Router = () => {
return (
<Routes>
<Route path="/" element={<LandingPage />} />
<Route path="games" element={<Games />} />
<Route path="game-details/:id" element={<GameDetails />} />
<Route path="dashboard" element={<Dashboard />}>
<Route path="/" element={<DashboardDefaultContent />} />
<Route path="inbox" element={<Inbox />} />
<Route path="settings-and-privacy" element={<SettingsAndPrivacy />} />
<Route path="*" element={<NotFound />} />
</Route>
<Route path="*" element={<NotFound />} />
</Routes>
);
};
export default Router;
import DashboardSidebarNavigation from "./dashboard-sidebar-navigation";
import { Grid } from "@material-ui/core";
import { Outlet } from "react-router";
const Dashboard = () => {
return (
<Grid
container
direction="row"
justify="flex-start"
alignItems="flex-start"
>
<DashboardSidebarNavigation />
<Outlet />
</Grid>
);
};
export default Dashboard;
Github回购在这里。https://github.com/webmasterdevlin/react-router-6-demo
**这段代码适用于v6**
index.js
ReactDOM.render(
<React.StrictMode>
<BrowserRouter>
<Routes>
<Route path="/" element={<App />}>
<Route path="login" element={<Login />} />
<Route path="home" element={<Home />} />
</Route>
</Routes>
</BrowserRouter>
</React.StrictMode>,
document.getElementById('root')
);
App.js:
function App(props) {
useEffect(() => {
console.log('reloaded');
// Checking, if Parent component re-rendering or not *it should not be, in the sense of performance*, this code doesn't re-render parent component while loading children
});
return (
<div className="App">
<Link to="login">Login</Link>
<Link to="home">Home</Link>
<Outlet /> // This line is important, otherwise we will be shown with empty component
</div>
);
}
login.js:
const Login = () => {
return (
<div>
Login Component
</div>
)
};
home.js:
const Home= () => {
return (
<div>
Home Component
</div>
)
};
