我尝试按照this tutorial来了解动态路由的工作原理。现在,我想使用WordPress的API为每个帖子生成唯一的链接,而不是使用静态数据。我能够生成链接,但新页面上没有生成任何数据。我在这里做错了什么?
Articles.js(用作获取所有博客帖子的预览页面,按预期工作)
let sequence = (start...end).map(fibonacciFast)
Article.js(为了呈现每篇文章)
import React, { Component } from 'react';
import { Link, Route } from 'react-router-dom';
import Article from './Article';
const newsURL = "http://myprivateblogapi.com/wp-json/wp/v2/posts?_embed";
export default class Articles extends Component {
constructor(props) {
super(props);
this.state = {
newsData: [],
requestFailed: false
} }
componentDidMount() {
fetch(newsURL)
.then(response => {
if(!response.ok) {
throw Error("Network request failed.");
}
return response
})
.then(d => d.json())
.then(d => {
this.setState({
newsData: d
})
}, () => {
this.setState({
requestFailed: true
})
}) }
render() {
let articles = this.state.newsData.map((article, index) => {
if(this.state.requestFailed) return <p>Failed!</p>
if(!this.state.newsData) return <p>Loading...</p>
return(
<div key={index} className="article-container">
<div className="article-preview">
<span className="article-date">{article.date}</span>
<h5>{article.title.rendered}</h5>
<div dangerouslySetInnerHTML={{ __html: article.excerpt.rendered }} />
<Link to={`/news/${article.slug}`}>Read More...</Link>
</div>
<Route path={`/news/:articleSlug`}
render={ (props) => <Article data={articles} {...props} />} />
</div>
)
});
return (
<div>
<h3>All Articles from Blog</h3>
{articles}
</div>
) } }
答案 0 :(得分:1)
我认为问题在这里:
render={ (props) => <Article data={articles} {...props} />} />
在文章中你存储了地图的结果,所以它没有你期望的数据:
let articles = this.state.newsData.map(....)
解决方案:
1 - 如果你想传递完整数组,那么就这样写(不是一个好主意):
render={ props => <Article data={this.state.newsData} {...props} />} />
2 - 传递单个对象,文章组件中不需要循环:
render={ props => <Article data={article} {...props} />} />
和Article
组件:
const Article = ({match, data}) => {
let articleData;
if(data)
articleData = <div>
<h3> {article.title.rendered}</h3>
<p>{article.content.rendered}</p>
<hr />
</div>
else
articleData = <h2> Sorry. That article doesn't exist. </h2>;
return (
<div>
<div>
{articleData}
</div>
</div>
)
}