react-router-dom:从 <BrowserRouter> 中获取 props.location成分 [英] react-router-dom: getting props.location from within <BrowserRouter> component

问题描述

我有一个简单的应用程序，它使用来自react-router-dom"v4 的 BrowserRouter.我试图从 <BrowserRouter/> 组件中访问 location.pathname 属性，但无济于事:

class App 扩展组件{使成为(){返回 (<浏览器路由器>//如何访问 this.props.location?<div className={(this.props.location.pathnme === "/account") ?"bgnd-black" : "bgnd-white"} ><开关><Route path="/login" component={LoginPage}/><Route path="/success" component={LoginSuccess}/><Route path="/account" component={MyAccount}/>...<路由组件={Error404}/></开关>

</BrowserRouter>);}}

我知道我可以通过带有 this.props.location.pathname 的子组件访问应用程序的当前路径位置，但是我需要从父组件访问它，就在 下方<BrowserRouter/> 运行与子组件无关的附加逻辑.我怎样才能得到这个位置?

解决方案

您也可以使用 withRouter 来实现，这与将代码放入 render 的结果类似参数并避免需要假".

本质上，您将需要知道位置的 JSX 放在自己的组件中，该组件由 withRouter 包装.这提供了组件的位置:

import { withRouter } from 'react-router-dom';const Content = withRouter(props =><div className={(props.location.pathname === "/account") ?背......

);

然后在主路由器部分使用它:

class App 扩展组件{使成为() {返回 (<浏览器路由器><内容/>...

I have a simple App that uses BrowserRouter from 'react-router-dom' v4. I'm trying to access the location.pathname property from within the <BrowserRouter/> component, without avail:

class App extends Component{
  render(){
    return (
      <BrowserRouter>
        // How do I access this.props.location?
        <div className={(this.props.location.pathnme === "/account") ? "bgnd-black" : "bgnd-white"} >
          <Switch>
            <Route path="/login" component={LoginPage}/>
            <Route path="/success" component={LoginSuccess}/>
            <Route path="/account" component={MyAccount}/>
            ...
            <Route component={Error404}/>
          </Switch>
        </div>
      </BrowserRouter>
    );
  }
}

I know that I can access the app's current path location through the child components with this.props.location.pathname, but I need to access it from the parent component, just below <BrowserRouter/> to run additional logic that doesn't pertain to child components. How can I get this location?

解决方案

You can also do it using withRouter which has a similar result to putting the code in a render parameter and avoids the need for a "fake" <Route/>.

Essentially you put the JSX that needs to know the location in a component of its own, which is wrapped by withRouter. This supplies the location to the component:

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

const Content = withRouter(props =>
    <div className={(props.location.pathname === "/account") ? "backg...
    ...
    </div>
);

Then you use that in your main router section:

class App extends Component{
    render() {
        return (
            <BrowserRouter>
                <Content/>
                ...

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