我正在使用react和react-router。
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'))
});
“Link”呈现页面，但不将属性传递给新视图。
下面是视图代码
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?
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。
我为此挣扎了几个小时，没有一个答案对我有用。最后，我设法在文档中找到了React Router 6的解决方案。
下面是完整的例子:
// App.js
<BrowserRouter>
<Routes>
<Route path="/books/:bookId" element={ <BookDetails /> } />
</Routes>
</BrowserRouter>
// BookDetails.js
import React from "react"
import { useParams } from "react-router-dom"
export default function BookPage() {
const params = useParams()
return <div> { console.log(params.bookId) } </div>
}
注意，useParams不能在类组件中调用，因此必须使用函数组件(详细信息请参阅此回答)。
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>
}
对于v6:注意!状态应该在from to={}之外
// route setup
<Route path="/employee-edit/:empId" element={<EmployeeEdit />} / >
链接到组件
<Link to={"/employee-edit/1"} state={{ data: employee }} > Edit </Link>
or
<Link to={{
pathname: "/employee-edit/1",
search: "?sort=name",
hash: "#the-hash",
}}
state={{ data: employee }} > Edit </Link>
注意:state在from{}之外，但是for
版本5:
<Link
to={{
pathname: "/courses",
search: "?sort=name",
hash: "#the-hash",
state: { fromDashboard: true }
}}
/>
Funtional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，我们需要将它包装在功能组件中，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()} />
);
用"react-router-dom": "^6.2.2"测试，
更新25-11-21
感谢alexadestech。Mx在上面写道。
我能够转移整个对象，并从中抽出所有必要的字段
在send-component中:
<Button type="submit" component={NavLink} to={{
pathname: '/basequestion',
state: {question} }}
variant="contained"
size="small">Take test</Button>
在receive-component:
import { useLocation } from "react-router"
const BaseQuestion = () => {
const location = useLocation();
const {description, title, images} = (location.state.question);
