onEnter未在React-Router中调用 [英] onEnter not called in React-Router

问题描述

好的，我厌倦了尝试。

onEnter 方法不起作用。知道为什么会这样吗？

Ok, I'm fed up trying.
The onEnter method doesn't work. Any idea why is that?

// Authentication "before" filter
function requireAuth(nextState, replace){
  console.log("called"); // => Is not triggered at all 
  if (!isLoggedIn()) {
    replace({
      pathname: '/front'
    })
  }
}

// Render the app
render(
  <Provider store={store}>
      <Router history={history}>
        <App>
          <Switch>
            <Route path="/front" component={Front} />
            <Route path="/home" component={Home} onEnter={requireAuth} />
            <Route exact path="/" component={Home} onEnter={requireAuth} />
            <Route path="*" component={NoMatch} />
          </Switch>
        </App>
      </Router>
  </Provider>,
  document.getElementById("lf-app")

编辑：

当我调用 onEnter = {requireAuth（）} 时执行该方法，但显然这不是目的，我也不会得到所需的参数。

The method is executed when I call onEnter={requireAuth()}, but obviously that is not the purpose, and I also won't get the desired parameters.

推荐答案

onEnter >。您应该使用< Route render = {...} /> 来获得所需的功能。我相信 重定向 示例有你的具体情况。我在下面修改它以匹配你的。

onEnter no longer exists on react-router-4. You should use <Route render={ ... } /> to get your desired functionality. I believe Redirect example has your specific scenario. I modified it below to match yours.

<Route exact path="/home" render={() => (
  isLoggedIn() ? (
    <Redirect to="/front"/>
  ) : (
    <Home />
  )
)}/>

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