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'))
});
“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;
如何使用“链接”传递数据?
此行缺失path
:
<Route name="ideas" handler={CreateIdeaView} />
应该:
<Route name="ideas" path="/:testvalue" handler={CreateIdeaView} />
鉴于以下情况Link
(过时的v1):
<Link to="ideas" params={{ testvalue: "hello" }}>Create Idea</Link>
从v4开始更新:
const backUrl = '/some/other/value'
// this.props.testvalue === "hello"
<Link to={{pathname: `/${this.props.testvalue}`, query: {backUrl}}} />
并在withRouter(CreateIdeaView)
组件中render()
:
console.log(this.props.match.params.testvalue, this.props.location.query.backurl)
// output
hello /some/other/value
从您在文档上发布的链接,朝页面底部:
给定一条路线
<Route name="user" path="/users/:userId"/>
使用一些存根查询示例更新了代码示例:
// import React, {Component, Props, ReactDOM} from 'react';
// import {Route, Switch} from 'react-router'; etc etc
// this snippet has it all attached to window since its in browser
const {
BrowserRouter,
Switch,
Route,
Link,
NavLink
} = ReactRouterDOM;
class World extends React.Component {
constructor(props) {
super(props);
console.dir(props);
this.state = {
fromIdeas: props.match.params.WORLD || 'unknown'
}
}
render() {
const { match, location} = this.props;
return (
<React.Fragment>
<h2>{this.state.fromIdeas}</h2>
<span>thing:
{location.query
&& location.query.thing}
</span><br/>
<span>another1:
{location.query
&& location.query.another1
|| 'none for 2 or 3'}
</span>
</React.Fragment>
);
}
}
class Ideas extends React.Component {
constructor(props) {
super(props);
console.dir(props);
this.state = {
fromAppItem: props.location.item,
fromAppId: props.location.id,
nextPage: 'world1',
showWorld2: false
}
}
render() {
return (
<React.Fragment>
<li>item: {this.state.fromAppItem.okay}</li>
<li>id: {this.state.fromAppId}</li>
<li>
<Link
to={{
pathname: `/hello/${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>
更新:
参见: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:
<Link to>
,onEnter和isActive使用位置描述符
<Link to>
现在可以使用除字符串之外的位置描述符。查询和状态道具已弃用。// v1.0.x
<Link to="/foo" query={{ the: 'query' }}/>
// v2.0.0
<Link to={{ pathname: '/foo', query: { the: 'query' } }}/>
//在2.x版本中仍然有效
<Link to="/foo"/>
同样,从onEnter挂钩重定向现在也使用了位置描述符。
// 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' } })
对于自定义的类似链接的组件,同样适用于router.isActive,以前是history.isActive。
// v1.0.x
history.isActive(pathname, query, indexOnly)
// v2.0.0
router.isActive({ pathname, query }, indexOnly)
从v3到v4的更新:
- 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
该接口基本上与v2相同,最好查看一下react-router的CHANGES.md,因为这是更新所在。
后代的“旧版迁移文档”
- 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
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。
// 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
我有同样的问题要显示我的应用程序中的用户详细信息。
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} />
通过this.props.match.params.value
您的CreateIdeaView类获得此信息。
您可以观看这段对我有很大帮助的视频:https://www.youtube.com/watch?v = ZBxMljq9GSE
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路径进行路由:
<Route path="/ideas/:value" component ={CreateIdeaView} />
通过链接(考虑将testValue属性传递给呈现链接的相应组件(例如,上面的App组件))
<Link to={`/ideas/${ this.props.testValue }`}>Create Idea</Link>
将props传递给组件构造函数,则可以通过以下方式使用value参数
props.match.params.value
简单的是:
<Link to={{
pathname: `your/location`,
state: {send anything from here}
}}
现在您要访问它:
this.props.location.state
要解决以上答案(https://stackoverflow.com/a/44860918/2011818),您还可以在Link对象内以“ To”内联发送对象。
<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!"
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);
}
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>
我遇到了错误,
对象文字只能指定已知的属性,而'myProps'在'LocationDescriptorObject |类型中不存在。((位置:位置=> LocationDescriptor)'
然后我检查了 他们state
出于相同目的提供官方文档。
所以它像这样工作
<Link
to={{
pathname: "/my-path",
state: {
hello: "Hello World"
}
}}>
Press Me
</Link>
在下一个组件中,您可以按以下方式获得此值,
componentDidMount() {
console.log("received "+this.props.location.state.hello);
}
对于v5
<Link
to={{
pathname: "/courses",
search: "?sort=name",
hash: "#the-hash",
state: { fromDashboard: true }
}}
/>
路线:
<Route state={this.state} exact path="/customers/:id" render={(props) => <PageCustomer {...props} state={this.state} />} />
然后可以像这样访问您的PageCustomer组件中的参数: this.props.match.params.id
。
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'}
})
最简单的方法是使用文档中提到的to:object
内部link
:https :
//reactrouter.com/web/api/Link/to-object
<Link
to={{
pathname: "/courses",
search: "?sort=name",
hash: "#the-hash",
state: { fromDashboard: true, id: 1 }
}}
/>
我们可以按以下方式检索以上参数(状态):
this.props.location.state // { fromDashboard: true ,id: 1 }
如果您只是想替换路线中的子弹,则可以使用react-router 4.3(2018)中引入的generatePath
那一点。到目前为止,它尚未包含在react-router-dom(web)文档中,但包含在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>
这个概念django.urls.reverse
已经有一段时间了。
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