React router Link不会导致组件在嵌套路由中更新

Question

这真让我抓狂.当我尝试在嵌套路由中使用React Router的链接时,链接会在浏览器中更新,但视图不会更改.然而,如果我将页面刷新到链接,它确实如此.不知何故,组件不应该更新(或者至少是目标).

这是我的链接的样子(上一个/下一个项目真的是变量):

<Link to={'/portfolio/previous-item'}>
    <button className="button button-xs">Previous</button>
</Link>
<Link to={'/portfolio/next-item'}>
    <button className="button button-xs">Next</button>
</Link>

一个hacky解决方案是manaully调用forceUpate(),如:

<Link onClick={this.forceUpdate} to={'/portfolio/next-item'}>
    <button className="button button-xs">Next</button>
</Link>

这工作,但导致整页刷新,我不想要和错误:

ReactComponent.js:85 Uncaught TypeError: Cannot read property 'enqueueForceUpdate' of undefined

我已经搜索了高低的答案,我最接近的是:https://github.com/reactjs/react-router/issues/880.但它已经过时了,我没有使用纯渲染混合.

以下是我的相关路线:

<Route component={App}>
    <Route path='/' component={Home}>
        <Route path="/index:hashRoute" component={Home} />
    </Route>
    <Route path="/portfolio" component={PortfolioDetail} >
        <Route path="/portfolio/:slug" component={PortfolioItemDetail} />
    </Route>
    <Route path="*" component={NoMatch} />
</Route>

无论出于何种原因,调用Link不会导致组件重新安装哪些需要发生以获取新视图的内容.它确实调用componentDidUpdate,我确信我可以检查url slug更改然后在那里触发我的ajax调用/视图更新,但似乎不应该这样做.

编辑(更多相关代码):

PortfolioDetail.js

import React, {Component} from 'react';
import { browserHistory } from 'react-router'
import {connect} from 'react-redux';
import Loader from '../components/common/loader';
import PortfolioItemDetail from '../components/portfolio-detail/portfolioItemDetail';
import * as portfolioActions  from '../actions/portfolio';

export default class PortfolioDetail extends Component {

    static readyOnActions(dispatch, params) {
        // this action fires when rendering on the server then again with each componentDidMount. 
        // but not firing with Link...
        return Promise.all([
            dispatch(portfolioActions.fetchPortfolioDetailIfNeeded(params.slug))
        ]);
    }

    componentDidMount() {
        // react-router Link is not causing this event to fire
        const {dispatch, params} = this.props;
        PortfolioDetail.readyOnActions(dispatch, params);
    }

    componentWillUnmount() {
        // react-router Link is not causing this event to fire
        this.props.dispatch(portfolioActions.resetPortfolioDetail());
    }

    renderPortfolioItemDetail(browserHistory) {
        const {DetailReadyState, item} = this.props.portfolio;
        if (DetailReadyState === 'WORK_DETAIL_FETCHING') {
            return <Loader />;
        } else if (DetailReadyState === 'WORK_DETAIL_FETCHED') {
            return <PortfolioItemDetail />; // used to have this as this.props.children when the route was nested
        } else if (DetailReadyState === 'WORK_DETAIL_FETCH_FAILED') {
            browserHistory.push('/not-found');
        }
    }

    render() {
        return (
            <div id="interior-page">
                {this.renderPortfolioItemDetail(browserHistory)}
            </div>
        );
    }
}

function mapStateToProps(state) {
    return {
        portfolio: state.portfolio
    };
}
function mapDispatchToProps(dispatch) {
    return {
        dispatch: dispatch
    }
}

export default connect(mapStateToProps, mapDispatchToProps)(PortfolioDetail);

PortfolioItemDetail.js

import React, {Component} from 'react';
import {connect} from 'react-redux';
import Gallery from './gallery';

export default class PortfolioItemDetail extends React.Component {

    makeGallery(gallery) {
        if (gallery) {
            return gallery
                .split('|')
                .map((image, i) => {
                    return <li key={i}><img src={'/images/portfolio/' + image} alt="" /></li>
            })
        }
    }

    render() {
        const { item } = this.props.portfolio;

        return (
            <div className="portfolio-detail container-fluid">
                <Gallery
                    makeGallery={this.makeGallery.bind(this)}
                    item={item}
                />
            </div>
        );
    }
}

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

export default connect(mapStateToProps)(PortfolioItemDetail);

gallery.js

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

const Gallery = (props) => {

    const {gallery, prev, next} = props.item;
    const prevButton = prev ? <Link to={'/portfolio/' + prev}><button className="button button-xs">Previous</button></Link> : '';
    const nextButton = next ? <Link to={'/portfolio/' + next}><button className="button button-xs">Next</button></Link> : '';

    return (
        <div>
            <ul className="gallery">
                {props.makeGallery(gallery)}
            </ul>
            <div className="next-prev-btns">
                {prevButton}
                {nextButton}
            </div>
        </div>
    );
};

export default Gallery;

新路线,基于Anoop的建议:

<Route component={App}>
    <Route path='/' component={Home}>
        <Route path="/index:hashRoute" component={Home} />
    </Route>
    <Route path="/portfolio/:slug" component={PortfolioDetail} />
    <Route path="*" component={NoMatch} />
</Route>

Answer 1

无法追根究底，但我能够使用 ComponentWillRecieveProps 实现我的目标：

componentWillReceiveProps(nextProps){
    if (nextProps.params.slug !== this.props.params.slug) {
        const {dispatch, params} = nextProps;
        PortfolioDetail.readyOnActions(dispatch, params, true);
    }
}

换句话说，无论出于何种原因，当我使用 React Router Link 链接到具有相同父组件的页面时，它都不会触发 componentWillUnMount/componentWillMount。所以我必须手动触发我的操作。每当我链接到具有不同父组件的路由时，它都会按照我的预期工作。

也许这是设计好的，但看起来不正确而且不直观。我注意到 Stackoverflow 上有很多关于 Link 更改 url 但不更新页面的类似问题，所以我不是唯一的一个。如果有人对此有任何见解，我仍然很想听听！