React router 4-检测父组件中是否有一个子路由匹配

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

const ParentComponent = () => {
  const hasChildRoute = ({ match }) => {
    // 检测是否有子路由匹配
    if (match) {
      console.log('有子路由匹配');
    } else {
      console.log('没有子路由匹配');
    }

    return null;
  };

  return (
    <Router>
      <div>
        <ul>
          <li><Link to="/child">子路由</Link></li>
        </ul>

        <Route path="/child" render={hasChildRoute} />
      </div>
    </Router>
  );
};

export default ParentComponent;