Question

我是ReactJS的新手，并使用React开始我的第一个应用程序。我一直在观看视频并浏览各种教程，最后设法通过Login登上我的第一个ReactRedux应用程序。

我使用了ReactTraining网站的AuthWorkflow示例。他们使用PrivateRoute组件来保护受保护的路由。我已经实施了它并且正在实施它。

问题：
现在，我无法将任何自定义数据或类似用户数据发送到受保护路由。我怎么发送它？

代码

import React from "react";
import {
  BrowserRouter as Router,
  Route,
  Link,
  Redirect,
  withRouter
} from "react-router-dom";

////////////////////////////////////////////////////////////
// 1. Click the public page
// 2. Click the protected page
// 3. Log in
// 4. Click the back button, note the URL each time

const AuthExample = () => (
  <Router>
    <div>
      <AuthButton />
      <ul>
        <li>
          <Link to="/public">Public Page</Link>
        </li>
        <li>
          <Link to="/protected">Protected Page</Link>
        </li>
      </ul>
      <Route path="/public" component={Public} />
      <Route path="/login" component={Login} />

       // Here I want to pass the user data to protected component.
      <PrivateRoute path="/protected" component={Protected} user={username:'ariful', email:'test@example.com'}/>
    </div>
  </Router>
);

const fakeAuth = {
  isAuthenticated: false,
  authenticate(cb) {
    this.isAuthenticated = true;
    setTimeout(cb, 100); // fake async
  },
  signout(cb) {
    this.isAuthenticated = false;
    setTimeout(cb, 100);
  }
};

const AuthButton = withRouter(
  ({ history }) =>
    fakeAuth.isAuthenticated ? (
      <p>
        Welcome!{" "}
        <button
          onClick={() => {
            fakeAuth.signout(() => history.push("/"));
          }}
        >
          Sign out
        </button>
      </p>
    ) : (
      <p>You are not logged in.</p>
    )
);

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

const Public = () => <h3>Public</h3>;

// show the username here
const Protected = (props) => <h3>Protected Username: {props.user.username}</h3>;

class Login extends React.Component {
  state = {
    redirectToReferrer: false
  };

  login = () => {
    fakeAuth.authenticate(() => {
      this.setState({ redirectToReferrer: true });
    });
  };

  render() {
    const { from } = this.props.location.state || { from: { pathname: "/" } };
    const { redirectToReferrer } = this.state;

    if (redirectToReferrer) {
      return <Redirect to={from} />;
    }

    return (
      <div>
        <p>You must log in to view the page at {from.pathname}</p>
        <button onClick={this.login}>Log in</button>
      </div>
    );
  }
}

export default AuthExample;

如何成功将用户对象发送到受保护组件？

Answer 1

您需要将传递给...rest的{{1}}参数传递给组件，但并非所有参数都需要对组件做出反应。您可以构建React路由器

所需的其他参数

PrivateRoute

Answer 2

查看问题所在：

<PrivateRoute 
   path="/protected" 
   component={Protected} 
   user={username:'ariful', email:'test@example.com'} />

现在在PrivateRoute组件中，用户对象将作为道具传递，它将在rest对象中可用，同时rest将具有{{1}所需的数据所以要使它更通用。

而不是传递用户对象总是传递Route，现在休息将拥有Route所需的数据，数据将是传递给组件的数据，写成如下：

data

将该数据传递给const PrivateRoute = ({ component: Component, data, ...rest }) => ( <Route {...rest} render={props => fakeAuth.isAuthenticated ? ( <Component {...props} {...data} /> ) : ( <Redirect to={{ pathname: "/login", state: { from: props.location } }} /> ) } /> );

Answer 3

带有react-redux钩子的功能组件的PrivateRoute

import React from 'react';
import { Route, Redirect } from 'react-router-dom';
import {useSelector} from 'react-redux'

const PrivateRoute = ({ component: Component, auth, ...rest }) => {
const isAuthenticated = useSelector((state)=>state.isAuthenticated)
  return (
    <Route
    {...rest}
render={props =>
  isAuthenticated === true ? (
    <Component {...props} />
  ) : (
    <Redirect to="/login" />
  )
}
/>
)
}


export default PrivateRoute;

Answer 4

没什么花哨的，只需调用render函数并将一些数据传递到组件中即可。

<PrivateRoute
 render = {() => 
  <Component
   data = {value}
  />}
 path = "/path"
/>

将自定义数据传递到React

4 个答案: