当前位置：theitroad>Javascript 在 Link react-router 中传递道具

Javascript 在 Link react-router 中传递道具

声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow 原文地址: http://stackoverflow.com/questions/30115324/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me): StackOverFlow

提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-08-23 04:41:23 　来源:igfitidea点击:

Pass props in Link react-router

javascriptreactjsreact-router

提问by vishal atmakuri

I am using react with react-router. I am trying to pass property's in a "Link" of react-router

我正在使用 react-router 进行反应。我正在尝试在 react-router 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'))
});

The "Link" renders the page but does not pass the property to the new view. Below is the view code

“链接”呈现页面但不将属性传递给新视图。下面是查看代码

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;

How can I pass data using "Link"?

如何使用“链接”传递数据？

采纳答案by jmunsch

This line is missing path:

缺少这一行path：

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

Should be:

应该：

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

Given the following Link(outdated v1):

鉴于以下Link（过时的 v1）：

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

Up to date as of v4:

最新的 v4：

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

and in the withRouter(CreateIdeaView)components render():

并在withRouter(CreateIdeaView)组件中render()：

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

From the link that you posted on the docs, towards the bottom of the page:

从您在文档上发布的链接到页面底部：

Given a route like <Route name="user" path="/users/:userId"/>

给定一条路线 <Route name="user" path="/users/:userId"/>



Updated code example with some stubbed query examples:

使用一些存根查询示例更新了代码示例：

// 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>

updates:

更新：

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

参见：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)

从 1.x 到 2.x 的升级指南：

<Link to>、 onEnter 和 isActive 使用位置描述符

<Link to>除了字符串之外，现在还可以使用位置描述符。不推荐使用查询和状态道具。

// v1.0.x

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

// v2.0.0

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

// 在 2.x 中仍然有效

<Link to="/foo"/>

同样，从 onEnter 钩子重定向现在也使用位置描述符。

// 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' } })

对于自定义类似链接的组件，同样适用于 router.isActive，以前的 history.isActive。

// v1.0.x

history.isActive(pathname, query, indexOnly)

// v2.0.0

router.isActive({ pathname, query }, indexOnly)

updates for v3 to v4:

v3 到 v4 的更新：

"legacy migration documentation" for posterity

子孙后代的“遗留移民文件”

回答by Chetan Sisodiya

there is a way you can pass more than one parameter. You can pass "to" as object instead of string.

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

回答by Alessander Fran?a

I had the same problem to show an user detail from my application.

我在显示应用程序中的用户详细信息时遇到了同样的问题。

You can do this:

你可以这样做：

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

or

或者 

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

and

和 

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

to get this via this.props.match.params.valueat your CreateIdeaView class.

通过this.props.match.params.value在您的 CreateIdeaView 类中获取此信息。

You can see this video that helped me a lot: https://www.youtube.com/watch?v=ZBxMljq9GSE

你可以看到这个对我有很大帮助的视频：https: //www.youtube.com/watch?v=ZBxMljq9GSE

回答by Kevin K.

as for react-router-dom 4.x.x (https://www.npmjs.com/package/react-router-dom) you can pass params to the component to route to via:

至于 react-router-dom 4.xx ( https://www.npmjs.com/package/react-router-dom)，您可以将参数传递给组件以通过以下方式路由：

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

linking via (considering testValue prop is passed to the corresponding component (e.g. the above App component) rendering the link)

链接通过（考虑 testValue prop 被传递到渲染链接的相应组件（例如上面的 App 组件））

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

passing props to your component constructor the value param will be available via

将道具传递给您的组件构造函数，值参数将通过

props.match.params.value

回答by Farhan

See this post for reference

请参阅此帖子以供参考

The simple is that:

简单的是：

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

Now you want to access it:

现在你想访问它：

this.props.location.state

回答by Krishna Kumar Jangid

After install react-router-dom

安装后 react-router-dom

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

and other end where the route is redirected do this

路由重定向的另一端执行此操作

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

回答by FBaez51

To work off the answer above (https://stackoverflow.com/a/44860918/2011818), you can also send the objects inline the "To" inside the Link object.

要解决上面的答案（https://stackoverflow.com/a/44860918/2011818），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!"

回答by gprathour

Typescript

打字稿

For approach mentioned like this in many answers,

对于许多答案中提到的方法，

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

I was getting error,

我收到错误，

Object literal may only specify known properties, and 'myProps' does not exist in type 'LocationDescriptorObject | ((location: Location) => LocationDescriptor)'

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)'

Then I checked in the official documentationthey have provided statefor the same purpose.

然后我检查了他们为相同目的提供的官方文档state。

So it worked like this,

所以它是这样工作的，

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

And in your next component you can get this value as following,

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);
}

回答by Abu Shumon

Route:

路线： 

<Route state={this.state} exact path="/customers/:id" render={(props) => <PageCustomer {...props} state={this.state} />} />

And then can access params in your PageCustomer component like this: this.props.match.params.id.

然后就可以在你这样的PageCustomer组件访问PARAMS： this.props.match.params.id。

For example an api call in PageCustomer component:

例如 PageCustomer 组件中的 api 调用： 

axios({
   method: 'get',
   url: '/api/customers/' + this.props.match.params.id,
   data: {},
   headers: {'X-Requested-With': 'XMLHttpRequest'}
 })

相关推荐

Javascript 如何将网页从一个域重定向到另一个域？

Javascript 如何将网页从一个域重定向到另一个域？

Javascript Sequelize Where 如果不为空

Javascript Sequelize Where 如果不为空

Javascript 在 React 中定义空 dom 元素的正确方法

Javascript 在 React 中定义空 dom 元素的正确方法

Javascript 如何以角度 6 导入 JS 文件？

Javascript 如何以角度 6 导入 JS 文件？

相关推荐
最近更新
标签