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?
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)。
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PageCustomer组件中的参数:
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'}
})
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，
最简单的方法是使用文档中提到的链接中的to:对象:
https://reactrouter.com/web/api/Link/to-object
<Link
to={{
pathname: "/courses",
search: "?sort=name",
hash: "#the-hash",
state: { fromDashboard: true, id: 1 }
}}
/>
我们可以检索上面的params (state)如下:
this.props.location.state // { fromDashboard: true ,id: 1 }
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);
