详解react-refetch的使用小例子
(编辑:jimmy 日期: 2024/11/29 浏览:3 次 )
使用react-refetch来简化api获取数据的代码
const List = ({data: gists}) => { return ( <ul> {gists.map(gist => ( <li key={gist.id}>{gist.description}</li> ))} </ul> ) } const withData = url => Part => { return class extends Component { state = {data: []} componentDidMount() { fetch(url) .then(response => response.json "htmlcode">import { connect as refetchConnect } from 'react-refetch' const List = ({gists}) => { if (gists.pending) { return <div>loading...</div> } else if (gists.rejected) { return <div>{gists.reason}</div> } else if (gists.fulfilled) { return ( gists.fulfilled && <ul> {gists.value.map(gist => ( <li key={gist.id}>{gist.description}</li> ))} </ul> ) } } const ListWithGists = refetchConnect(() => ({gists: `https://api.github.com/users/gaearon/gists`}))(List)瞬间清爽多了,顺便利用react-refetch提供的属性,顺便把loading逻辑也添加了
分离列表和项目的职责
很明显,List组件是一个渲染列表的组件,他的职责就是渲染列表,但是我们在这里也处理了单个Item的逻辑,我们可以将其进行职责分离,List只做列表染,而Gist也只渲染自身
const Gist = ({description}) => ( <li> {description} </li> ) const List = ({gists}) => { if (gists.pending) { return <div>loading...</div> } else if (gists.rejected) { return <div>{gists.reason}</div> } else if (gists.fulfilled) { return ( gists.fulfilled && <ul> {gists.value.map(gist => <Gist key={gist.id} {...gist} />)} </ul> ) } }使用react-refetch来给Gist添加功能
react-refetch
的connect方法接收一个函数作为参数,这个函数返回一个对象,如果结果对象的值是一个字符串,那么获取prop后,会对这个字符串发起请求,但是如果值是一个函数,那么不会立即执行,而是会传递给组件,以便后续使用值为字符串
const connectWithStar = refetchConnect(() => ({gists: `https://api.github.com/users/gaearon/gists`}))值为函数
const connectWithStar = refetchConnect(({id}) => ({ star: () => ({ starResponse: { url: `https://api.github.com/gists/${id}/star"htmlcode">connectWithStar(Gist)以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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