你不应该使用 <Link>在<Router>之外 [英] You should not use <Link> outside a <Router>

问题描述

I'm trying to set up react-router in an example application, and I'm getting the following error:

You should not use <Link> outside a <Router>

My app is set up like so:

Parent component

const router = (
  <div className="sans-serif">
    <Router histpry={browserHistory}>
      <Route path="/" component={Main}>
        <IndexRoute component={PhotoGrid}></IndexRoute>
        <Route path="/view/:postId" component={Single}></Route>
      </Route>
    </Router>
  </div>
);

render(<Main />, document.getElementById('root'));

Child/Main component

export default () => (
  <div>
    <h1>
      <Link to="/">Redux example</Link>
    </h1>
  </div>
)

Any idea what I'm doing wrong here?

Here's a Sandbox link to demonstrate the problem.

解决方案

I'm assuming that you are using React-Router V4, as you used the same in the original Sandbox Link.

You are rendering the Main component in the call to ReactDOM.render that renders a Link and Main component is outside of Router, that's why it is throwing the error:

You should not use <Link> outside a <Router>

Changes:

1. Use any one of these Routers, BrowserRouter/HashRouter etc..., because you are using React-Router V4.

2. Router can have only one child, so wrap all the routes in a div or Switch.

3. React-Router V4, doesn't have the concept of nested routes, if you wants to use nested routes then define those routes directly inside that component.

---

Check this working example with each of these changes.

Parent Component:

const App = () => (
  <BrowserRouter>
    <div className="sans-serif">
      <Route path="/" component={Main} />
      <Route path="/view/:postId" component={Single} />
    </div>
  </BrowserRouter>
);

render(<App />, document.getElementById('root'));

Main component from route

import React from 'react';
import { Link } from 'react-router-dom';

export default () => (
  <div>
    <h1>
      <Link to="/">Redux example</Link>
    </h1>
  </div>
)

Etc.

---

Also check this answer: Nested routes with react router v4

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