How to set route with optional query parameter using React router?

问题

I have a path as

 <Route path="/account/:accountid/LoginPage"
      component={LoginPage}/>

This works fine if the url is -> /account/12332/LoginPage. I want to have optional query parameters. Url structure would be something as

/account/12322/LoginPage?User=A&User=B

I have modified the path as

<Route path="/account/:accountid/LoginPage(/:User)"
      component={LoginPage}/>

after this if I try to access the url it does not redirect me to the appropriate page instead it throws an error as

useBasename.js:56 Uncaught TypeError: history.getCurrentLocation is not a function
    at Object.getCurrentLocation (useBasename.js:56)
    at Object.getCurrentLocation (useQueries.js:64)
    at Object.listen (createTransitionManager.js:246)
    at Object.componentWillMount (Router.js:97)
    at ReactCompositeComponent.js:347
    at measureLifeCyclePerf (ReactCompositeComponent.js:75)
    at ReactCompositeComponentWrapper.performInitialMount (ReactCompositeComponent.js:346)
    at ReactCompositeComponentWrapper.mountComponent (ReactCompositeComponent.js:257)
    at Object.mountComponent (ReactReconciler.js:45)
    at ReactCompositeComponentWrapper.performInitialMount (ReactCompositeComponent.js:370)

回答1:

As of react-router v4 (latest version), it does not support query params (? user=nerve&name=no-one). It does support URL params though. There is a GitHub issue discussing the same point. Go ahead and read it, there are some good solutions but nothing baked right into the core library.

A workaround that I usually implement is adding multiple routes that render the same component.

<Route exact path='/' component={ HomePageConnector } />
<Route exact path='/search/:searchTerm' component={ HomePageConnector } />

Edit

The only issue with v4, as I understand, is that it NO LONGER exposes the location.query object. However, you still have access to location.search (which is a STRING, not an object). You can read this string and pass it to a library like query-string to get a more meaningful object out of it. This way, you can continue to use query parameters rather than URL params. This information is already written in the GitHub issue but is a little scattered across comments. Something like (though not tested):

Routes:

<Route exact path='/test' component={HomePageConnector} />

Fetching the params in component:

const parseQueryString = require('query-string');

let queryString = this.props.location.search;
let queryParams = parseQueryString.parse(queryString);

来源：https://stackoverflow.com/questions/45026915/how-to-set-route-with-optional-query-parameter-using-react-router

标签

reactjs

react-router

query-parameters