從Route發送后獲取React Props

Question

我正在從此鏈接中提到的路線發送React組件

<Route path='/StartCompaign' render={(props) => <CampaignStart {...props} isDashboard={true} /> } />

我在另一個組件中獲取道具

{props.childern.render.isDashboard ? <Header /> : "NO"  }

APP.JSX文件

import React from 'react';
import { Route, Switch } from 'react-router';
import Layout from './components/Layout';

import Home from './components/Dynamic/Home';
import Filter from './components/Dynamic/Filter';
import { AboutCampaign } from './components/Dynamic/AboutCampaign';
import { CampaignStart } from './components/Dynamic/CompaignStart';
import NotFound from './NotFound';
import {SignUp} from './components/Static/SignUp';  
import { Login } from './components/Static/Login';  

import Dashboard from './components/Dashboard'

import { withCookies } from 'react-cookie';

class App extends React.Component {
    render() {
        return (
            <Switch>
                <Layout>
                    <Route exact path='/' component={Home} />
                    <Route path='/filter' component={Filter}/>
                    <Route path='/Campaign/:campaignId' component={AboutCampaign}/>
                    <Route path='/SignUp' component={SignUp}/>
                    <Route path='/Login' component={Login}/>
                    <Route path='/Dashboard' render={(props) => <Dashboard {...props} isDashboard={true} /> } />

                    <Route path="" component={NotFound} />
                </Layout>
            </Switch>
        );
    }
}

export default withCookies(App);

版面

import React from 'react';
import { Container } from 'reactstrap';
import Header from './Static/Header';
import Footer from './Static/Footer';
import TopNavigation from './Component/DashBoard/TopNavigation'

export default props => (
    <div>
        {props.isDashboard ? <Header /> : <TopNavigation />  }
        <Container>
            {props.children}
        </Container>
        <Footer />
  </div>
);

當特定路由被調用但props.isDashboard似乎undefined時，我試圖在react應用程序中更改<Header/>和<TopNavigation />

Answer 1

這是因為您要向<Dashboard/>組件發送道具

<Dashboard {...props} isDashboard={true} />

而不是<Layout />組件。 如果布局組件需要接收isDashboard道具，則需要像這樣傳遞它

<Layout isDashboard={true} />

由於Layout是父組件，因此如果子組件也需要道具，則可以隨時將其傳遞給子組件。