使用React Router V4 / V5的嵌套路由

2020/10/07 14:01 · javascript ·  · 0评论

我目前正在使用React Router v4来嵌套路由。

最接近的示例是React-Router v4文档中的route config

我想将我的应用分为两部分。

前端和管理区域。

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} />

前端的布局和样式与管理区域不同。因此,在首页内的路线是原路,子路线应该是左右路线。

/ home应该呈现在Frontpage组件中,/ admin / home应该呈现在Backend组件中。

我尝试了一些变体,但始终以未命中/ home或/ admin / home为结尾。

编辑-19.04.2017

因为这篇文章现在有很多观点,所以我用最终解决方案对其进行了更新。希望对您有所帮助。

编辑-08.05.2017

删除了旧的解决方案

最终解决方案:

这是我现在使用的最终解决方案。此示例还具有全局错误组件,例如传统的404页面。

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;

在react-router-v4中,您不嵌套<Routes />相反,您将它们放在另一个中<Component />


例如

<Route path='/topics' component={Topics}>
  <Route path='/topics/:topicId' component={Topic} />
</Route>

应该成为

<Route path='/topics' component={Topics} />

const Topics = ({ match }) => (
  <div>
    <h2>Topics</h2>
    <Link to={`${match.url}/exampleTopicId`}>
      Example topic
    </Link>
    <Route path={`${match.path}/:topicId`} component={Topic}/>
  </div>
) 

这是直接来自react-router文档基本示例

react-router v6

2020年更新:即将发布的v6版本将包含RouteJust Work™的嵌套组件。请参阅此博客文章中的示例代码

虽然最初的问题是关于v4 / v5的,但在可能的情况下,仅在使用v6时才使用正确的答案目前处于测试阶段。


react-router v4 & v5

的确,要嵌套路由,您需要将它们放置在Route的子组件中。

但是,如果您更喜欢使用内联语法而不是通过组件来分解renderRoute,则可以为要嵌套的Route支持提供功能组件

<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render应该使用道具而不是component道具感兴趣,那是因为它阻止了在每个渲染器上重新安装内联功能组件。有关更多详细信息,请参见文档

请注意,该示例将嵌套的Routes包装在Fragment中在React 16之前,您可以改用容器<div>

只是想提一提自此问题发布/回复以来,react-router v4发生了根本变化

没有任何<Match>组件了!<Switch>是为了确保仅呈现第一个匹配项。<Redirect>好..重定向到另一条路线。使用或忽略exact或排除部分匹配。

参见文档。他们都是伟大的。https://reacttraining.com/react-router/

这是一个示例,希望可以用来回答您的问题。

<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>

希望能有所帮助,让我知道。如果此示例不能很好地回答您的问题,请告诉我,我将看看是否可以对其进行修改。

像这样的东西。

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

import '../assets/styles/App.css';

const Home = () =>
  <NormalNavLinks>
    <h1>HOME</h1>
  </NormalNavLinks>;
const About = () =>
  <NormalNavLinks>
    <h1>About</h1>
  </NormalNavLinks>;
const Help = () =>
  <NormalNavLinks>
    <h1>Help</h1>
  </NormalNavLinks>;

const AdminHome = () =>
  <AdminNavLinks>
    <h1>root</h1>
  </AdminNavLinks>;

const AdminAbout = () =>
  <AdminNavLinks>
    <h1>Admin about</h1>
  </AdminNavLinks>;

const AdminHelp = () =>
  <AdminNavLinks>
    <h1>Admin Help</h1>
  </AdminNavLinks>;


const AdminNavLinks = (props) => (
  <div>
    <h2>Admin Menu</h2>
    <NavLink exact to="/admin">Admin Home</NavLink>
    <NavLink to="/admin/help">Admin Help</NavLink>
    <NavLink to="/admin/about">Admin About</NavLink>
    <Link to="/">Home</Link>
    {props.children}
  </div>
);

const NormalNavLinks = (props) => (
  <div>
    <h2>Normal Menu</h2>
    <NavLink exact to="/">Home</NavLink>
    <NavLink to="/help">Help</NavLink>
    <NavLink to="/about">About</NavLink>
    <Link to="/admin">Admin</Link>
    {props.children}
  </div>
);

const App = () => (
  <Router>
    <div>
      <Switch>
        <Route exact path="/" component={Home}/>
        <Route path="/help" component={Help}/>
        <Route path="/about" component={About}/>

        <Route exact path="/admin" component={AdminHome}/>
        <Route path="/admin/help" component={AdminHelp}/>
        <Route path="/admin/about" component={AdminAbout}/>
      </Switch>

    </div>
  </Router>
);


export default App;

通过Switch在根路由之前进行包装并定义嵌套路由,我成功地定义了嵌套路由

<BrowserRouter>
  <Switch>
    <Route path="/staffs/:id/edit" component={StaffEdit} />
    <Route path="/staffs/:id" component={StaffShow} />
    <Route path="/staffs" component={StaffIndex} />
  </Switch>
</BrowserRouter>

参考:https : //github.com/ReactTraining/react-router/blob/master/packages/react-router/docs/api/Switch.md

使用挂钩

使用带有挂钩的最新更新useRouteMatch

主要路由组件


export default function NestingExample() {
  return (
    <Router>
      <Switch>
       <Route path="/topics">
         <Topics />
       </Route>
     </Switch>
    </Router>
  );
}

子组件

function Topics() {
  // The `path` lets us build <Route> paths 
  // while the `url` lets us build relative links.

  let { path, url } = useRouteMatch();

  return (
    <div>
      <h2>Topics</h2>
      <h5>
        <Link to={`${url}/otherpath`}>/topics/otherpath/</Link>
      </h5>
      <ul>
        <li>
          <Link to={`${url}/topic1`}>/topics/topic1/</Link>
        </li>
        <li>
          <Link to={`${url}/topic2`}>/topics/topic2</Link>
        </li>
      </ul>

      // You can then use nested routing inside the child itself
      <Switch>
        <Route exact path={path}>
          <h3>Please select a topic.</h3>
        </Route>
        <Route path={`${path}/:topicId`}>
          <Topic />
        </Route>
        <Route path={`${path}/otherpath`>
          <OtherPath/>
        </Route>
      </Switch>
    </div>
  );
}

您可以尝试类似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;

我认为您也可以从这里实现相同的目标。

反应路由器v6

允许同时使用嵌套路由(如v3)和单独的拆分路由(v4,v5)。

嵌套路线

对于中小型应用程序,将所有路由都放在一个位置

<Routes>
  <Route path="/" element={<Home />} >
    <Route path="user" element={<User />} /> 
    <Route path="dash" element={<Dashboard />} /> 
  </Route>
</Routes>

替代方法:通过将路线定义为纯JavaScript对象useRoutes

分开的路线

您可以使用单独的路由来满足大型应用程序的需求,例如代码拆分:

// inside App.jsx:
<Routes>
  <Route path="/*" element={<Home />} />
</Routes>

// inside Home.jsx:
<Routes>
  <Route path="user" element={<User />} />
  <Route path="dash" element={<Dashboard />} />
</Routes>

如果需要,可提供React Router v6或版本6的完整答案。

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仓库在这里。https://github.com/webmasterdevlin/react-router-6-demo

React Router v5的完整答案。


const Router = () => {
  return (
    <Switch>
      <Route path={"/"} component={LandingPage} exact />
      <Route path={"/games"} component={Games} />
      <Route path={"/game-details/:id"} component={GameDetails} />
      <Route
        path={"/dashboard"}
        render={({ match: { path } }) => (
          <Dashboard>
            <Switch>
              <Route
                exact
                path={path + "/"}
                component={DashboardDefaultContent}
              />
              <Route path={`${path}/inbox`} component={Inbox} />
              <Route
                path={`${path}/settings-and-privacy`}
                component={SettingsAndPrivacy}
              />
              <Redirect exact from={path + "/*"} to={path} />
            </Switch>
          </Dashboard>
        )}
      />
      <Route path="/not-found" component={NotFound} />
      <Redirect exact from={"*"} to={"/not-found"} />
    </Switch>
  );
};

export default Router;
const Dashboard = ({ children }) => {
  return (
    <Grid
      container
      direction="row"
      justify="flex-start"
      alignItems="flex-start"
    >
      <DashboardSidebarNavigation />
      {children}
    </Grid>
  );
};

export default Dashboard;

Github仓库在这里。https://github.com/webmasterdevlin/react-router-5-demo

interface IDefaultLayoutProps {
    children: React.ReactNode
}

const DefaultLayout: React.SFC<IDefaultLayoutProps> = ({children}) => {
    return (
        <div className="DefaultLayout">
            {children}
        </div>
    );
}


const LayoutRoute: React.SFC<IDefaultLayoutRouteProps & RouteProps> = ({component: Component, layout: Layout, ...rest}) => {
const handleRender = (matchProps: RouteComponentProps<{}, StaticContext>) => (
        <Layout>
            <Component {...matchProps} />
        </Layout>
    );

    return (
        <Route {...rest} render={handleRender}/>
    );
}

const ScreenRouter = () => (
    <BrowserRouter>
        <div>
            <Link to="/">Home</Link>
            <Link to="/counter">Counter</Link>
            <Switch>
                <LayoutRoute path="/" exact={true} layout={DefaultLayout} component={HomeScreen} />
                <LayoutRoute path="/counter" layout={DashboardLayout} component={CounterScreen} />
            </Switch>
        </div>
    </BrowserRouter>
);
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