reactjs - 如何使用 TypeScript 和 React-Router 4、5 或 6 重写 protected /私有(private)路由？

Question

我试图创建一个 <PrivateRoute>如 react 路由器中所述documents使用 typescript 。谁能帮帮我？

react-router文档中的privateRoute:

const PrivateRoute = ({ component: Component, ...rest }) => (
  <Route {...rest} render={props => (
    fakeAuth.isAuthenticated ? (
      <Component {...props}/>
    ) : (
      <Redirect to={{pathname: '/login', state: { from: props.location }
   }}/>
  )
 )}/>
)

下面是我的 TypeScript 版本(它不会工作):

const PrivateRoute = (theProps: { path: string, component: React.SFC<RouteComponentProps<any> | undefined> | React.ComponentClass<RouteComponentProps<any> | undefined> }) => {
    return <Route path={theProps.path} render={props => (
        fakeAuth.isAuthenticated ? (
            <React.Component {...theProps} /> <!-- **** It will raise error *** -->
        ) : (
                <Redirect to={{
                    pathname: '/',
                    state: { from: props.location }
                }} />
            )
    )} />
}

<React.Component {...thisProps} />是不正确的。错误是:NodeInvocationException: inst.render 不是函数TypeError: inst.render 不是函数

Answer 1

原始答案(2017)

(下面的更新答案)

错误可能与渲染中的输入和隐式返回有关。当你解决这个问题时，你最终会得到这样的结果:

const PrivateRoute = ({component, isAuthenticated, ...rest}: any) => {
    const routeComponent = (props: any) => (
        isAuthenticated
            ? React.createElement(component, props)
            : <Redirect to={{pathname: '/login'}}/>
    );
    return <Route {...rest} render={routeComponent}/>;
};

这个组件可以这样使用:

<PrivateRoute
    path='/private'
    isAuthenticated={this.props.state.session.isAuthenticated}
    component={PrivateContainer}
/>

上述解决方案有一些缺点。其中之一是您失去了类型安全性。

可能扩展了 Route组件是更好的主意。

import * as React from 'react';
import {Redirect, Route, RouteProps} from 'react-router';

export interface ProtectedRouteProps extends RouteProps {
    isAuthenticated: boolean;
    authenticationPath: string;
}

export class ProtectedRoute extends Route<ProtectedRouteProps> {
    public render() {
        let redirectPath: string = '';
        if (!this.props.isAuthenticated) {
            redirectPath = this.props.authenticationPath;
        }

        if (redirectPath) {
            const renderComponent = () => (<Redirect to={{pathname: redirectPath}}/>);
            return <Route {...this.props} component={renderComponent} render={undefined}/>;
        } else {
            return <Route {...this.props}/>;
        }
    }
}

所以你可以像这样使用组件:

const defaultProtectedRouteProps: ProtectedRouteProps = {
    isAuthenticated: this.props.state.session.isAuthenticated,
    authenticationPath: '/login',
};

<ProtectedRoute
    {...defaultProtectedRouteProps}
    exact={true}
    path='/'
    component={ProtectedContainer}
/>

更新(2019 年 11 月)

如果您更喜欢编写函数式组件，您可以采用非常相似的方式来编写。这也适用于 React Router 5:

import * as React from 'react';
import { Redirect, Route, RouteProps } from 'react-router';

export interface ProtectedRouteProps extends RouteProps {
  isAuthenticated: boolean;
  isAllowed: boolean;
  restrictedPath: string;
  authenticationPath: string;
}

export const ProtectedRoute: React.FC<ProtectedRouteProps> = props => {
  let redirectPath = '';
  if (!props.isAuthenticated) {
    redirectPath = props.authenticationPath;
  }
  if (props.isAuthenticated && !props.isAllowed) {
    redirectPath = props.restrictedPath;
  }

  if (redirectPath) {
    const renderComponent = () => <Redirect to={{ pathname: redirectPath }} />;
    return <Route {...props} component={renderComponent} render={undefined} />;
  } else {
    return <Route {...props} />;
  }
};

export default ProtectedRoute;

更新(2019 年 12 月)

如果要将用户重定向到用户首先要访问的路径，则需要记住该路径，以便在身份验证成功后重定向。以下答案将指导您完成此操作:

Redirecting a user to the page they requested after successful authentication with react-router-dom

更新(2021 年 3 月)

上面的解决方案有点过时了。 ProtectedRoute 组件可以简单的写成如下:

import { Redirect, Route, RouteProps } from 'react-router';

export type ProtectedRouteProps = {
  isAuthenticated: boolean;
  authenticationPath: string;
} & RouteProps;

export default function ProtectedRoute({isAuthenticated, authenticationPath, ...routeProps}: ProtectedRouteProps) {
  if(isAuthenticated) {
    return <Route {...routeProps} />;
  } else {
    return <Redirect to={{ pathname: authenticationPath }} />;
  }
};

如果你使用 React Router V6，你需要替换 Redirect与 Navigate .可以在此处找到重定向到最初请求的页面的完整示例:

• React Router 5 example
• React Router 6 example

更新(2022 年 1 月)

作为 <Routes> 的 child 需要是 <Route>元素 <ProtectedRoute>可以更改为:

export type ProtectedRouteProps = {
  isAuthenticated: boolean;
  authenticationPath: string;
  outlet: JSX.Element;
};

export default function ProtectedRoute({isAuthenticated, authenticationPath, outlet}: ProtectedRouteProps) {
  if(isAuthenticated) {
    return outlet;
  } else {
    return <Navigate to={{ pathname: authenticationPath }} />;
  }
};

<ProtectedRoute>现在可以像下面这样应用:

const defaultProtectedRouteProps: Omit<ProtectedRouteProps, 'outlet'> = {
  isAuthenticated: !!sessionContext.isAuthenticated,
  authenticationPath: '/login',
};

return (
  <div>
    <Routes>
      <Route path='/' element={<Homepage />} />
      <Route path='dashboard' element={<ProtectedRoute {...defaultProtectedRouteProps} outlet={<Dashboard />} />} />
      <Route path='protected' element={<ProtectedRoute {...defaultProtectedRouteProps} outlet={<Protected />} />} />
      <Route path='nested' element={<ProtectedRoute {...defaultProtectedRouteProps} outlet={<Layout />} />}>
        <Route path='one' element={<Protected />} />
        <Route path='two' element={<Protected />} />
      </Route>
      <Route path='login' element={<Login />} />
    </Routes>
  </div>
);

我还更新了 React Router 6 example .到目前为止，甚至还有关于此的官方指南:https://reactrouter.com/docs/en/v6/examples/auth