ReactHook 异步请求删除数据不能正确刷新问题,救救小白吧,被卡了一晚上 - V2EX
qwertty01

ReactHook 异步请求删除数据不能正确刷新问题,救救小白吧,被卡了一晚上

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  •   qwertty01 Sep 4, 2020 2303 views
    This topic created in 2089 days ago, the information mentioned may be changed or developed.

    点击一次删除时,不能刷新,点两次才能删除

    export const WorkPage = () => { const [items, setItems] = useState([]) const [update, setUpdate] = useState(false) const updateEvent = () => { console.log(update) setUpdate(!update) } useEffect(() => { axios.get(findAllUrl).then(respOnse=> { setItems(response.data) }) }, [update]) const deleteItemHandler = (event) => { axios.get(deleteByIdUrl, { params: { id: event.target.value } }).then(respOnse=> { console.log(response) }) updateEvent() } return ( <div> <ul> {items.map(((item, index, array) => <li key={index}>{index + " " + item.content} <button value={item.id} OnClick={e => deleteItemHandler(e)}>X </button> </li> ))} </ul> </div> ) } 
    10 replies    2020-09-05 13:52:40 +08:00
    lemon6
        1
    lemon6  
       Sep 4, 2020 via Android   1
    你的两个接口是同时调的,所以在执行删除操作的时候数据库还没有真正完成删除
    qwertty01
        2
    qwertty01  
    OP
       Sep 4, 2020
    @lemon6 有什么解决的办法吗?
    qwertty01
        3
    qwertty01  
    OP
       Sep 4, 2020
    @lemon6 感谢老哥,一语点醒梦中人。把 updateEvent()放到回调里就可以了。
    iamppz
        4
    iamppz  
       Sep 4, 2020 via iPhone
    update 放 then 里面啊
    aaronlam
        5
    aaronlam  
       Sep 5, 2020
    感觉是不是用 aysnc await 就不会那么容易出现这种失误了呢。。
    Blacate
        6
    Blacate  
       Sep 5, 2020 via iPhone
    推荐 react-query 或 useswr 贼香
    qwertty01
        7
    qwertty01  
    OP
       Sep 5, 2020
    @iamppz 嗯,是这样解决的
    qwertty01
        8
    qwertty01  
    OP
       Sep 5, 2020
    @Blacate 我这就去学 T - T
    fsiisx
        9
    fsiisx  
       Sep 5, 2020 via iPhone
    虽然我只懂点前端 但我也知道异步更新操作得放在 promise 的 then 里
    ike
        10
    ike  
       Sep 5, 2020
    虽然与问题无关,delete 不能用 get 请求吧。
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