在Link react-router中传递道具

Question

我正在使用react-react进行反应.我试图在反应路由器的"链接"中传递属性

var React  = require('react');
var Router = require('react-router');
var CreateIdeaView = require('./components/createIdeaView.jsx');

var Link = Router.Link;
var Route = Router.Route;
var DefaultRoute = Router.DefaultRoute;
var RouteHandler = Router.RouteHandler;
var App = React.createClass({
  render : function(){
    return(
      <div>
        <Link to="ideas" params={{ testvalue: "hello" }}>Create Idea</Link>
        <RouteHandler/>
      </div>
    );
  }
});

var routes = (
  <Route name="app" path="/" handler={App}>
    <Route name="ideas" handler={CreateIdeaView} />
    <DefaultRoute handler={Home} />
  </Route>
);

Router.run(routes, function(Handler) {

  React.render(<Handler />, document.getElementById('main'))
});

"链接"呈现页面但不将属性传递给新视图.以下是视图代码

var React = require('react');
var Router = require('react-router');

var CreateIdeaView = React.createClass({
  render : function(){
    console.log('props form link',this.props,this)//props not recived
  return(
      <div>
        <h1>Create Post: </h1>
        <input type='text' ref='newIdeaTitle' placeholder='title'></input>
        <input type='text' ref='newIdeaBody' placeholder='body'></input>
      </div>
    );
  }
});

module.exports = CreateIdeaView;

如何使用"链接"传递数据？

Answer 1

缺少此行path:

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

应该:

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

鉴于以下内容Link:

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

从您在文档上发布的链接,到页面底部:

给出一条路线 withRouter(CreateIdeaView)

使用一些存根查询示例更新了代码示例:

const backUrl = '/some/other/value'
<Link to={{pathname: `/${this.props.testValue}`, query: {backUrl}}} />

console.log(this.props.location.query.backurl)

更新:

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

从1.x到2.x的升级指南:

render(),onEnter和isActive使用位置描述符

<Route name="user" path="/users/:userId"/>现在可以在字符串之外使用位置描述符.不推荐使用查询和状态道具.

// v1.0.x

// 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'));

// v2.0.0

<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>

//仍然在2.x中有效

<Link to="/foo" query={{ the: 'query' }}/>

同样,从onEnter挂钩重定向现在也使用位置描述符.

// v1.0.x

<Link to={{ pathname: '/foo', query: { the: 'query' } }}/>

// v2.0.0

<Link to="/foo"/>

对于类似自定义链接的组件,这同样适用于router.isActive,以前的history.isActive.

// 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' } })

v3到v4的更新:

• 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

  该接口基本上仍然与v2相同,最好查看react-router的CHANGES.md,因为这是更新的地方.

后代的"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

Answer 2

有一种方法可以传递多个参数.您可以将"to"作为对象而不是字符串传递.

// 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

Answer 3

我在应用程序中显示用户详细信息时遇到了同样的问题.

你可以这样做:

<Link to={'/ideas/'+this.props.testvalue }>Create Idea</Link>

要么

<Link to="ideas/hello">Create Idea</Link>

和

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

this.props.match.params.value在CreateIdeaView类中获取此通道.

您可以看到这段视频给我带来了很多帮助:https://www.youtube.com/watch？v = ZBxMljq9GSE

Answer 4

请参阅此帖子以供参考

简单的是：

<Link to={{
     pathname: `your/location`,
     state: {send anything from here}
}}

现在你想访问它：

this.props.location.state

Answer 5

在您的 Link 组件内执行状态

<Link to='register' state={{name:'zayne'}}>

现在要访问您访问的页面中的项目，请导入 useLocation

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

const Register=()=>{

const location = useLocation()

//store the state in a variable if you want 
//location.state then the property or object you want

const Name = location.state.name

return(
  <div>
    hello my name is {Name}
  </div>
)

}

Answer 6

至于react-router-dom 4.xx(https://www.npmjs.com/package/react-router-dom),您可以将params传递给组件以路由到via:

<Route path="/ideas/:value" component ={CreateIdeaView} />

链接via(考虑将testValue prop传递给相应的组件(例如上面的App组件)呈现链接)

<Link to={`/ideas/${ this.props.testValue }`}>Create Idea</Link>

将props传递给组件构造函数,值param将通过

props.match.params.value

Answer 7

安装后 react-router-dom

<Link
    to={{
      pathname: "/product-detail",
      productdetailProps: {
       productdetail: "I M passed From Props"
      }
   }}>
    Click To Pass Props
</Link>

路由重定向的另一端执行此操作

componentDidMount() {
            console.log("product props is", this.props.location.productdetailProps);
          }

Answer 8

要解决上面的答案（/sf/answers/3140264291/），您还可以将对象内联发送到链接对象内的“收件人”。

<Route path="/foo/:fooId" component={foo} / >

<Link to={{pathname:/foo/newb, sampleParam: "Hello", sampleParam2: "World!" }}> CLICK HERE </Link>

this.props.match.params.fooId //newb
this.props.location.sampleParam //"Hello"
this.props.location.sampleParam2 //"World!"

Answer 9

对于 v6： 注意！state应该在外面to={}

// route setup
<Route path="/employee-edit/:empId" element={<EmployeeEdit />} / >

Link到组件

<Link to={"/employee-edit/1"} state={{ data: employee }} > Edit </Link>

或者

<Link to={{
       pathname: "/employee-edit/1",
       search: "?sort=name",
       hash: "#the-hash",
     }}
       state={{ data: employee }} > Edit </Link>

注意： state在 之外to{}，但对于 v5：

<Link
  to={{
    pathname: "/courses",
    search: "?sort=name",
    hash: "#the-hash",
    state: { fromDashboard: true }
  }}
/>
          

功能组件：

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

const LinkTest = () => {
  const location = useLocation();
  console.log("Location", location);
  return <h1>Link Test</h1>;
};

export default LinkTest;

类组件：为了使用钩子，我们需要将其包装在功能组件中并传递 props：

import React, { Component } from "react";
import { useLocation, useParams } from "react-router-dom";

class LinkTestComponent extends Component {
  render() {
    console.log(this.props);
    return <h1>Link Test</h1>;
  }
}

export default () => (
  <LinkTestComponent params={useParams()} location={useLocation()} />
);

测试用： "react-router-dom": "^6.2.2",

Answer 10

打字稿

对于许多答案中提到的方法，

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

我收到错误，

对象字面量只能指定已知的属性，而 'myProps' 不存在于类型 'LocationDescriptorObject | 中。((位置：位置) => LocationDescriptor)'

然后我检查了他们为相同目的提供的官方文档state。

所以它是这样工作的，

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

在您的下一个组件中，您可以获得以下值，

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

Answer 11

对于 v5

 <Link
  to={{
    pathname: "/courses",
    search: "?sort=name",
    hash: "#the-hash",
    state: { fromDashboard: true }
  }}
/>

React 路由器官方网站