无状态组件 React 路由器

Question

我是 React 和 Redux 的新手，我实际上是在创建自己的代码，但我被无状态组件中的路由器之类的东西卡住了。

所以，实际上我需要使用 this.props.history.push('/somepath') 来路由到一个组件。这不会发生在无状态组件内部。

我的无状态组件是

import React from "react"; // eslint-disable-line no-unused-vars
import "bootstrap/dist/css/bootstrap.min.css";
import "./header.css";

const Header = () => ({

    handleAuthor() {
        this.props.history('/somepath')// this is not working
    },

    render(){
        return (
            <div className = "header">
                <h1 onClick = {this.handleAuthor.bind(this)}>{this.props.headerText}</h1>
            </div>
        );
    } 
});

export default Header;

我在另一个无状态组件（如 mainlayout）中调用它

import React from "react"; // eslint-disable-line no-unused-vars
import Header from "../header/Header"; // eslint-disable-line no-unused-vars
import Footer from "../footer/Footer"; // eslint-disable-line no-unused-vars
import "./mainLayout.css";

const MainLayout = props => ({
    render() {
        return (
            <div className="App">
                <Header headerText = "RK Boilerplate"/>
                <div className = "mainLayout">
                    <main>{props.children}</main>
                </div>
                <Footer />
            </div>
        );
    }
});

export default MainLayout;

我的主文件 index.js 是这样的

import React from "react"; // eslint-disable-line no-unused-vars
import ReactDOM from "react-dom"; // eslint-disable-line no-unused-vars
import { matchRoutes, renderRoutes } from "react-router-config"; // eslint-disable-line no-unused-vars
import { Router } from "react-router-dom"; // eslint-disable-line no-unused-vars
import { Switch } from "react-router"; // eslint-disable-line no-unused-vars
import { Provider } from "react-redux"; // eslint-disable-line no-unused-vars
import store from "./store"; // eslint-disable-line no-unused-vars
import routes from "./routes"; // eslint-disable-line no-unused-vars
import MainLayout from "./components/mainLayout/MainLayout"; // eslint-disable-line no-unused-vars

import createHistory from "history/createBrowserHistory";
let history = createHistory();
const App =  document.getElementById("app");

export default App;

ReactDOM.render(
    <Provider store={store}>
        <MainLayout>
            <Router history= {history}>
                <Switch>
                    {renderRoutes(routes)}
                </Switch>
            </Router>
        </MainLayout>                 
    </Provider>, 
    App);

所以我需要的是我必须从标头路由到另一个组件，该组件和路径在路由器文件中给出

路由器.js

import Home from "../containers/Home";
import About from "../containers/About";
import CreateUser from "../containers/CreateUser";

import Layout from "../containers/Layout";

const routes = [
    { path: "/",
        exact: true,
        component: Layout
    },
    { path: "/home",
        exact: true,
        component: Home
    },
    {
        path:"/About",
        exact: true,
        component: About
    },
    {
        path:"/createUser",
        exact: true,
        component: CreateUser
    }
];

export default routes;

当我尝试从标头进行路由时，出现类似 push of undefined 的错误。 我错过了什么吗？我应该在这里做些什么改变。

提前致谢。

Answer 1

您可以直接导入历史对象并从中推送。例如尝试下面的代码。

import React from "react"; // eslint-disable-line no-unused-vars
import "bootstrap/dist/css/bootstrap.min.css";
import "./header.css";
import history from "/your/history/path" //try this

const Header = () => ({

    handleAuthor() {
        history.push('/somepath')// change to this
    },

    render(){
        return (
            <div className = "header">
                <h1 onClick = {this.handleAuthor.bind(this)}>{this.props.headerText}</h1>
            </div>
        );
    } 
});

export default Header;

像下面这样创建浏览器历史记录，并通过导入在任何地方使用它。

import createBrowserHistory from 'history/createBrowserHistory';

export default createBrowserHistory({});

Answer 2

希望这不会来得太晚。我可以成功地从有状态组件重定向，但我想将我的组件转换为无状态组件，因为唯一使它成为有状态的是重定向位。我对反应还很陌生，而且那里的大多数资源都不是很清楚。我就是这样做的。

import React from "react"; // eslint-disable-line no-unused-vars
import "bootstrap/dist/css/bootstrap.min.css";
import "./header.css";

const Header = (props) => {
    return (
        <div className = "header">
            <h1 onClick = {props.history.push('/some-path')}>{props.headerText}</h1>
        </div>
    );
} 

export default Header;

Answer 3

使用 withRouter 对我有用，（加上忽略打字稿警告）：

import { withRouter } from 'react-router-dom';

...

type Props = { myProp: boolean };

// @ts-ignore
export const MyComponent: FC<Props> = withRouter(({ myProp, history }) => {

...

})

Answer 4

2019 年，React Router v4 现在为无状态/函数式组件添加了 useHistory 钩子：

https://reacttraining.com/react-router/web/api/Hooks/usehistory

来自文档：

import { useHistory } from "react-router-dom";

function HomeButton() {
  let history = useHistory();

  function handleClick() {
    history.push("/home");
  }

  return (
    <button type="button" onClick={handleClick}>
      Go home
    </button>
  );
}