Question

我刚刚开始学习React，我觉得我面临着大多数初学者将要面对的常见问题。我正在构建一个非常简单的React App。我的目标是建立一个带有导航和一些动态内容的网站，这些内容根据点击的导航项目而变化。但是，内容始终具有相同的布局，因此唯一需要更改的部分是内容组件中显示的数据。

我设法构建了一个工作版本但是由于它错过了更新内容组件而感觉不对。相反，我为每个页面创建了一个新组件（List.js和List2.js），它从两个不同的文件（data.js和data2.js）加载数据。我现在想知道如何使用一个组件（list.js）并始终根据导航中单击的类别更新其内容。这是我目前的代码：

App.js

import React, { Component } from 'react'
import List from '../components/List'
import Nav from '../components/Nav'
import data from '../src/data/data'

require ('../src/sass/App.scss');

    class App extends Component {

     render () {
        return (
        <div className="wrapper">
        <Nav />
        {this.props.children}



         </div>
        )
      }

    }

    export default App

routes.js

import React from 'react'
import { Route, IndexRoute } from 'react-router'
import App from '../components/App';
import List from '../components/List';
import List2 from '../components/List2';
import IndexPage from '../components/IndexPage';





const routes = (
  <Route path="/" component={App}>
    <IndexRoute component={IndexPage} />
    <Route path="/list1" component={List} />
    <Route path="/list2" component={List2}/>



  </Route>
);

export default routes;

List.js

import React, { Component } from 'react'
import Article from './Article'
require ('../src/sass/List.scss');
import data from '../src/data/data'

class List extends Component {

  render() {


    const listWebsites = data.map(websites => {

        return (
            <Article key={websites.id} name={websites.name} preview={websites.description} image={websites.image} />
            )
    })

    console.log('our data is:', this.props.data)
    return (
      <div className="wrapperList">
          {listWebsites}

        </div>
    )
  }

}

export default List

List2.js

import React, { Component } from 'react'
import Article from './Article'
require ('../src/sass/List.scss');
import data from '../src/data/data2'

class List extends Component {

  render() {


    const listWebsites = data.map(websites => {

        return (
            <Article key={websites.id} name={websites.name} preview={websites.description} image={websites.image} />
            )
    })

    console.log('our data is:', this.props.data)
    return (
      <div className="wrapperList">
          {listWebsites}

        </div>
    )
  }

}

export default List

Nav.js

import React, { Component } from 'react'
import { Link } from 'react-router';
import data from '../src/data/data'
require ('../src/sass/Nav.scss');

class Nav extends Component {

 render () {
    return (
    <div>
     <nav>
        <ul>
            <li><Link to="/list1" activeClassName="active">List1</Link></li>
            <li><Link to="/list2" activeClassName="active">List2</Link></li>


        </ul>
     </nav> 
     </div>
    )
  }

}

export default Nav

data.js（data2.js结构相同）

const data = [
  {
    'id': '1',
     'name': 'Website1',
    'description': 'Lorem ipsum dolor sit amet, consetetur sadipscing elitr ',
    'image': 'website1.png',

  },
  {
    'id': '2',
    'name': 'Website2',
    'description': 'Lorem ipsum dolor sit amet, consetetur sadipscing elitr  ',
    'image': 'webstie2.jpg',

  },
  {
    'id': '3',
    'name': 'website3',
    'description': 'Lorem ipsum dolor sit amet, consetetur sadipscing elitr ',
    'image': 'website3.jpg',

  }

export default data

感谢您的帮助！

Answer 1

您可以在React Router中添加一个参数（代码未测试）：

const routes = (
  <Route path="/" component={App}>
    <IndexRoute component={IndexPage} />
    <Route path="/list1/:data" component={List} />    
  </Route>
);

然后，在List组件上，React Router将参数添加到params属性：

import React, { Component } from 'react'
import Article from './Article'
require ('../src/sass/List.scss');

class List extends Component {

  render() {

    //We could do this elswere depending on the requirements and 
    //how the data will be loaded (maybe use componentDidMount and the state)
    var data=[];
    if(this.props.params.data==="data1"){
      //Load data1 to data ... data=....
    }else{
      //Load other data  ... data=....
    }

    const listWebsites = data.map(websites => {

        return (
            <Article key={websites.id} name={websites.name} preview={websites.description} image={websites.image} />
            )
    })

    console.log('our data is:', this.props.data)
    return (
      <div className="wrapperList">
          {listWebsites}

        </div>
    )
  }

}

export default List

最后你将它用于：

    <li><Link to="/list/data1" activeClassName="active">List1</Link></li>
    <li><Link to="/list/data2" activeClassName="active">List2</Link></li>

Here是关于此的文档。

根据反应路线将数据加载到组件中

1 个答案: