this.props.history.push适用于某些组件,而不适用于其他组件

Question

我正在尝试以编程方式更改页面使用browserHistory.push.在我的一个组件中,但不在我嵌入在那个组件中的组件中.

有谁知道为什么我的项目只是为子组件而不是父组件抛出错误？

无法读取undefined属性'push'

父组件

import React, {Component} from 'react';
import { browserHistory } from 'react-router';
import ChildView from './ChildView';

class ParentView extends Component {

constructor(props) {
    super(props);
    this.addEvent = this.addEvent.bind(this);
  }

changePage() {
    this.props.history.push("/someNewPage");
  }

render() {
    return (
      <div>
        <div>
          <button onClick={this.changePage}>Go to a New Page!</button>
        </div>

        <ChildView />  // this is the child component where this.props.history.push doesn't work 

      </div>
    );
  }
}

function mapStateToProps(state) {
    return {
        user: state.user
    };
}

function matchDispatchToProps(dispatch) {
    return bindActionCreators({
      setName: setName
    }, dispatch)
}

export default connect(mapStateToProps, matchDispatchToProps)(ParentView);

子组件

    import React, {Component} from 'react';
    import { browserHistory } from 'react-router';

    class ChildView extends Component {

    constructor(props) {
        super(props);
        this.addEvent = this.addEvent.bind(this);
      }

    changePage() {
        this.props.history.push("/someNewPage");
      }

    render() {
        return (
          <div>
            <div>
              <button onClick={this.changePage}>Go to a New Page!</button>
            </div>

          </div>
        );
      }
    }

    function mapStateToProps(state) {
        return {
            user: state.user
        };
    }

    function matchDispatchToProps(dispatch) {
        return bindActionCreators({
          setName: setName
        }, dispatch)
    }

    export default connect(mapStateToProps, matchDispatchToProps)(ChildView);

路由器

// Libraries
import React from 'react';
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom';
import { browserHistory } from 'react-router';

// Components
import NotFound from './components/NotFound';
import ParentView from './components/ParentView';
import ChildView from './components/ChildView';
import SomeNewPage from './components/SomeNewPage';

// Redux
import { Provider } from 'react-redux';
import {createStore} from 'redux';
import allReducers from './reducers';

const store = createStore(
  allReducers,
  window.devToolsExtension && window.devToolsExtension()
);

const routes = (
    <Router history={browserHistory}>
      <div>
        <Provider store={store}>
            <Switch>
              <Route path="/" exact component={Home} />
              <Route path="/parentView" component={ParentView} />
              <Route path="/someNewPage" component={SomeNewPage} />
              <Route path="/childView" component={ChildView} />
              <Route component={NotFound} />
            </Switch>
        </Provider>
      </div>
    </Router>
);

export default routes;

如您所见,组件几乎完全相同,只是子组件位于父组件内.

注意我已尝试过这些方法,但它们并没有为我解决问题:

• 未捕获的TypeError:无法读取未定义的属性'push'并且正确导入可用
• React browserHistory.push给出Uncaught TypeError:无法读取未定义的属性'push'
• 在react-router 2中以编程方式重定向到页面

Answer 1

你在问题中回答了你的问题.

如您所见,组件几乎完全相同,只是子组件位于父组件内.

这个组件嵌套的事实是你的问题.React路由器只将路由道具注入它路由到的组件,而不是嵌入到的组件.

请参阅此问题的已接受答案.基本思想是你现在需要找到一种方法将路由道具注入子组件.您可以通过将孩子包裹在HOC中来实现withRouter.

export default withRouter(connect(mapStateToProps, matchDispatchToProps)(ChildView));

我希望这有帮助.

Answer 2

使用withRouter很好,另一种选择是将历史记录作为从父级到子级的prop(不使用withRouter),例如:

亲

<SignupForm history={this.props.history}/>

儿童

this.props.history.push('/dashboard');