打印稿

对于很多答案中提到的方法，

<Link
    to={{
        pathname: "/my-path",
        myProps: {
            hello: "Hello World"
        }
    }}>
    Press Me
</Link>

我得到了错误，

对象文字可能只指定已知的属性，'myProps'不存在类型'LocationDescriptorObject | ((location: location) => LocationDescriptor)'

然后我查看了他们为同样目的提供的官方文件。

它是这样工作的，

<Link
    to={{
        pathname: "/my-path",
        state: {
            hello: "Hello World"
        }
    }}>
    Press Me
</Link>

在你的下一个组件中，你可以得到如下的值，

componentDidMount() {
    console.log("received "+this.props.location.state.hello);
}

有一种方法可以传递多个参数。你可以传递"to"作为对象而不是字符串。

// your route setup
<Route path="/category/:catId" component={Category} / >

// your link creation
const newTo = { 
  pathname: "/category/595212758daa6810cbba4104", 
  param1: "Par1" 
};
// link to the "location"
// see (https://reacttraining.com/react-router/web/api/location)
<Link to={newTo}> </Link>

// In your Category Component, you can access the data like this
this.props.match.params.catId // this is 595212758daa6810cbba4104 
this.props.location.param1 // this is Par1

如果你只是想替换路由中的蛞蝓，你可以使用react-router 4.3(2018)中引入的generatePath。到目前为止，它还没有包含在react-router-dom (web)文档中，但在react-router (core)中。问题# 7679

// myRoutes.js
export const ROUTES = {
  userDetails: "/user/:id",
}


// MyRouter.jsx
import ROUTES from './routes'

<Route path={ROUTES.userDetails} ... />


// MyComponent.jsx
import { generatePath } from 'react-router-dom'
import ROUTES from './routes'

<Link to={generatePath(ROUTES.userDetails, { id: 1 })}>ClickyClick</Link>

这和django.urls.reverse一段时间以来的概念是一样的。

在我的情况下，我有一个空道具的功能组件，这解决了它:

<Link
  to={{
    pathname: `/dashboard/${device.device_id}`,
    state: { device },
  }}
>
  View Dashboard
</Link>

在你的函数组件中，你应该有这样的东西:

import { useLocation } from "react-router"
export default function Dashboard() {
  const location = useLocation()
  console.log(location.state)
  return <h1>{`Hello, I'm device ${location.state.device.device_id}!`}</h1>
}

这一行是缺失路径:

<Route name="ideas" handler={CreateIdeaView} />

应该是:

<Route name="ideas" path="/:testvalue" handler={CreateIdeaView} />

给定以下链接(过时的v1):

<Link to="ideas" params={{ testvalue: "hello" }}>Create Idea</Link>

截至v4/v5:

const backUrl = '/some/other/value'
// this.props.testvalue === "hello"

// Using query
<Link to={{pathname: `/${this.props.testvalue}`, query: {backUrl}}} />

// Using search
<Link to={{pathname: `/${this.props.testvalue}`, search: `?backUrl=${backUrl}`} />
<Link to={`/${this.props.testvalue}?backUrl=${backUrl}`} />

而在withRouter(CreateIdeaView)组件render()中，过期使用了withRouter高阶组件:

console.log(this.props.match.params.testvalue, this.props.location.query.backurl)
// output
hello /some/other/value

在使用useParams和useLocation钩子的函数组件中:

const CreatedIdeaView = () => {
    const { testvalue } = useParams();
    const { query, search } = useLocation(); 
    console.log(testvalue, query.backUrl, new URLSearchParams(search).get('backUrl'))
    return <span>{testvalue} {backurl}</span>    
}

从你在文档上发布的链接，页面底部:

给定一条路由，如< route name="user" path="/users/:userId"/>

更新的代码示例与一些存根查询示例:

// import React, {Component, Props, ReactDOM} from 'react'; // import {Route, Switch} from 'react-router'; etc etc // this snippet has it all attached to window since its in browser const { BrowserRouter, Switch, Route, Link, NavLink } = ReactRouterDOM; class World extends React.Component { constructor(props) { super(props); console.dir(props); this.state = { fromIdeas: props.match.params.WORLD || 'unknown' } } render() { const { match, location} = this.props; return ( <React.Fragment> <h2>{this.state.fromIdeas}</h2> <span>thing: {location.query && location.query.thing} </span><br/> <span>another1: {location.query && location.query.another1 || 'none for 2 or 3'} </span> </React.Fragment> ); } } class Ideas extends React.Component { constructor(props) { super(props); console.dir(props); this.state = { fromAppItem: props.location.item, fromAppId: props.location.id, nextPage: 'world1', showWorld2: false } } render() { return ( <React.Fragment> <li>item: {this.state.fromAppItem.okay}</li> <li>id: {this.state.fromAppId}</li> <li> <Link to={{ pathname: `/hello/${this.state.nextPage}`, query:{thing: 'asdf', another1: 'stuff'} }}> Home 1 </Link> </li> <li> <button onClick={() => this.setState({ nextPage: 'world2', showWorld2: true})}> switch 2 </button> </li> {this.state.showWorld2 && <li> <Link to={{ pathname: `/hello/${this.state.nextPage}`, query:{thing: 'fdsa'}}} > Home 2 </Link> </li> } <NavLink to="/hello">Home 3</NavLink> </React.Fragment> ); } } class App extends React.Component { render() { return ( <React.Fragment> <Link to={{ pathname:'/ideas/:id', id: 222, item: { okay: 123 }}}>Ideas</Link> <Switch> <Route exact path='/ideas/:id/' component={Ideas}/> <Route path='/hello/:WORLD?/:thing?' component={World}/> </Switch> </React.Fragment> ); } } ReactDOM.render(( <BrowserRouter> <App /> </BrowserRouter> ), document.getElementById('ideas')); <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-router-dom/4.3.1/react-router-dom.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-router/4.3.1/react-router.min.js"></script> <div id="ideas"></div>

更新:

见:https://github.com/ReactTraining/react-router/blob/0c6d51cd6639aff8a84b11d89e27887b3558ed8a/upgrade-guides/v2.0.0.md link-to-onenter-and-isactive-use-location-descriptors

From the upgrade guide from 1.x to 2.x: <Link to>, onEnter, and isActive use location descriptors <Link to> can now take a location descriptor in addition to strings. The query and state props are deprecated. // v1.0.x <Link to="/foo" query={{ the: 'query' }}/> // v2.0.0 <Link to={{ pathname: '/foo', query: { the: 'query' } }}/> // Still valid in 2.x <Link to="/foo"/> Likewise, redirecting from an onEnter hook now also uses a location descriptor. // v1.0.x (nextState, replaceState) => replaceState(null, '/foo') (nextState, replaceState) => replaceState(null, '/foo', { the: 'query' }) // v2.0.0 (nextState, replace) => replace('/foo') (nextState, replace) => replace({ pathname: '/foo', query: { the: 'query' } }) For custom link-like components, the same applies for router.isActive, previously history.isActive. // v1.0.x history.isActive(pathname, query, indexOnly) // v2.0.0 router.isActive({ pathname, query }, indexOnly)

#更新v3到v4:

https://github.com/ReactTraining/react-router/blob/432dc9cf2344c772ab9f6379998aa7d74c1d43de/packages/react-router/docs/guides/migrating.md https://github.com/ReactTraining/react-router/pull/3803 https://github.com/ReactTraining/react-router/pull/3669 https://github.com/ReactTraining/react-router/pull/3430 https://github.com/ReactTraining/react-router/pull/3443 https://github.com/ReactTraining/react-router/pull/3803 https://github.com/ReactTraining/react-router/pull/3636 https://github.com/ReactTraining/react-router/pull/3397 https://github.com/ReactTraining/react-router/pull/3288

界面基本上仍然和v2一样，最好看看CHANGES。Md表示反应路由器，因为这是更新的地方。

为子孙后代准备的“遗留移民文件”

https://github.com/ReactTraining/react-router/blob/dc7facf205f9ee43cebea9fab710dce036d04f04/packages/react-router/docs/guides/migrating.md https://github.com/ReactTraining/react-router/blob/0c6d51cd6639aff8a84b11d89e27887b3558ed8a/upgrade-guides/v1.0.0.md https://github.com/ReactTraining/react-router/blob/0c6d51cd6639aff8a84b11d89e27887b3558ed8a/upgrade-guides/v2.0.0.md https://github.com/ReactTraining/react-router/blob/0c6d51cd6639aff8a84b11d89e27887b3558ed8a/upgrade-guides/v2.2.0.md https://github.com/ReactTraining/react-router/blob/0c6d51cd6639aff8a84b11d89e27887b3558ed8a/upgrade-guides/v2.4.0.md https://github.com/ReactTraining/react-router/blob/0c6d51cd6639aff8a84b11d89e27887b3558ed8a/upgrade-guides/v2.5.0.md

在react-router v6中，它是state和useLocation:

<Link to={`/foo`} state={{title: 'foo'}}>

import {useLocation} from "react-router-dom";

const FooPage = () => {
    const location = useLocation()

    return <>
        <h1>{location.state.title}</h1>
    </>
}
export default FooPage;