将道具从包装器传递到一个子页

Question

您好，提前感谢您的帮助。我在将道具传递到加载了路线的组件时遇到了问题。我有一个带有包装器组件的路由文件，该组件加载关于路径URL的页面。在包装组件（布局）上，我想把一些道具传递给子组件。但是由于children组件是用this.props.children调用的，我不知道如何传递props.children。我试了很多东西，但都没有效果。

我有以下rotes文件：

import React from 'react';
import { Route, IndexRoute } from 'react-router';
import Layout from '../components/pages/Layout.js';
import Search from '../components/pages/Search.js';
import Queue from '../components/pages/Queue.js';
import About from '../components/pages/About.js';

const routes = () =>
    <Route path="/" component={Layout}>
        <IndexRoute component={Search}></IndexRoute>
        <Route path="queue" component={Queue}></Route>
        <Route path="about" component={About}></Route>
    </Route>
export default routes;

import React from "react";

import Footer from "../common/Footer.js";
import Nav from "../common/Nav.js";
import Header from "../common/Header.js";

export default class Layout extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            isSongPlaying: false,
            playingTrackId: "",
            playingList: []
        }
    }

    handleClickTrack(track) {
        this.setState({
           isSongPlaying: !this.state.isSongPlaying
        });

    }

    renderTrack(i) {
        return (
            <Player audio_id={id} />
        );
    }

    render() {


        const { location } = this.props;
        const { history } = this.props;
        const { children } = this.props;

        return (
            <div>
                <Header />
                <Nav location={location} history={history}/>

                <div className="container">
                    <div className="row">
                        <div className="col-lg-12">
                            {this.props.children}
                        </div>
                    </div>
                    <div className="row">
                        <div className="col-lg-12">
                            <div className="song-player">
                                {this.state.isSongPlaying ? this.renderTrack(this.state.playingTrackId) : null}
                            </div>
                        </div>
                    </div>
                    <Footer/>
                </div>
            </div>

        );
    }
}

在{this.props.children}上，组件正在加载我的页面组件Search、Queue和About，但我希望向搜索和队列组件添加回调道具。

在我的包装器布局组件上，我希望实现以下目标：

从“反作用”进口反作用；

import Footer from "../common/Footer.js";
import Nav from "../common/Nav.js";
import Header from "../common/Header.js";

export default class Layout extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            isSongPlaying: false,
            playingTrackId: "",
            playingList: []
        }
    }

    handleClickTrack(track) {
        this.setState({
           isSongPlaying: !this.state.isSongPlaying
        });

    }

    renderTrack(i) {
        return (
            <Player audio_id={id} />
        );
    }

    render() {


        const { location } = this.props;
        const { history } = this.props;
        const { children } = this.props;

        return (
            <div>
                <Header />
                <Nav location={location} history={history}/>

                <div className="container">
                    <div className="row">
                        <div className="col-lg-12">
                            {RENDER SEARCH WITH onClick prop}
                            {RENDER QUEUE WITH onClick prop}
                        </div>
                    </div>
                    <div className="row">
                        <div className="col-lg-12">
                            <div className="song-player">
                                {this.state.isSongPlaying ? this.renderTrack(this.state.playingTrackId) : null}
                            </div>
                        </div>
                    </div>
                    <Footer/>
                </div>
            </div>
        );
    }
}

Answer 1

我在React应用程序中使用render={()=> }来提供路由道具。不知道这是不是完美的方式。也许还有别的办法。但它起作用了！：）

以下是您的一个路线示例：

<Route exact path="/queue" render={() => <Queue prop={something}/>} />