React-router-dom 推送

Question

所以我正在通过一本电子书学习 React JS 并坚持下去，

我不断收到错误消息："Cannot read property 'push' of undefined.."

我的App.jsx

import React from 'react';
import ReactDOM from 'react-dom';
import { HashRouter as Router, Route, Switch, Redirect, withRouter } from 'react-router-dom';

import IssueList from './IssueList.jsx';
import IssueEdit from './IssueEdit.jsx';

const contentNode = document.getElementById('contents');
const NoMatch = () =><p>Page Not Found</p>;

const RoutedApp = () => (
<Router>
    <Switch>
        <Route exact path="/" render={ () => <Redirect to="/issues" /> } />
        <Route exact path="/issues" component={withRouter(IssueList)} />
        <Route path="/issues/:id" component={IssueEdit} />
        <Route path="*" component={NoMatch} />
    </Switch>
</Router>
);

ReactDOM.render(<RoutedApp />, contentNode);

if(module.hot){
    module.hot.accept();
}

IssueList.jsx

...
import React from 'react';
import QueryString from 'query-string';
import 'whatwg-fetch';
import { Link } from 'react-router-dom';

...
export default class IssueList extends React.Component{
   constructor(props){
       super(props);
       this.state = { issues: [] };
       this.createIssue = this.createIssue.bind(this);
       this.setFilter = this.setFilter.bind(this);
   }

   setFilter(query){
       this.props.router.push({ pathname: this.props.location.pathname, query });
   }
}

有人能告诉我它有什么问题吗？

Answer 1

您应该将您的组件包装在 react-router 中以访问历史记录属性。所以你的 IssueList.jsx 应该是这样的：

...
import React from 'react';
import QueryString from 'query-string';
import 'whatwg-fetch';
import { withRouter } from 'react-router'
import { Link } from 'react-router-dom';

...
class IssueList extends React.Component{
   constructor(props){
       super(props);
       this.state = { issues: [] };
       this.createIssue = this.createIssue.bind(this);
       this.setFilter = this.setFilter.bind(this);
   }

   setFilter(query){
       this.props.history.push({ pathname: this.props.location.pathname, query });
   }
}

export default withRouter(IssueList)

Answer 2

终于让它工作了，多亏了这个post：

...
import React from 'react';
import QueryString from 'query-string';
import 'whatwg-fetch';
import { Link } from 'react-router-dom';

...
export default class IssueList extends React.Component{
   constructor(props){
       super(props);
       this.state = { issues: [] };
       this.createIssue = this.createIssue.bind(this);
       this.setFilter = this.setFilter.bind(this);
   }

   setFilter(query){
       this.props.history.push({ 
           pathname: this.props.location.pathname, 
           search: '?' + QueryString.stringify(query) 
       });
   }
}

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