Redux-Toolkit和React Hooks-存储更改不会触发重新渲染

时间:2020-04-01 16:50:32

标签: javascript reactjs redux react-redux redux-toolkit

每当URL包含带有ID的查询参数时,我都尝试使用数据库中的信息预填充表单。从数据库中获取信息时,我无法使网站触发重新渲染。该组件中的相关代码如下所示。

let { id } = useParams();

const { title, summary, severity, references, type, vulnerabilities } = useSelector(
        (state: RootState) => state.articles.article
)

useEffect(() => {
    if(id) dispatch(fetchArticle(id))
}, [])

const [form, setForm] = useState<FormState>({
    title: title,
    type: type,
    summary: summary,
    severity: severity,
    references: references,
    vulnerabilities: vulnerabilities,
    autocompleteOptions: autocompleteSuggestions,
    reference: "",
    vulnerability: "",
})

useEffect(() => { 
    setForm({
        ...form,
        title: title,
        summary: summary,
        severity: severity,
        references: references,
        type: type,
        vulnerabilities: vulnerabilities
    })
}, [title, summary, severity, references, type, vulnerabilities])

enter image description here

我们可以看到已触发Redux操作,并且商店中的商品状态已更新。我还尝试过在钩子中console.log进行验证,以确保它可以运行,但仅在初始渲染时才运行。如果我在切片中更改initialState,则会在表单中反映出来。

let initialState: ArticleState = {
    loading: false,
    error: null,
    article: {
        title: "",
        severity: 0,
        type: 0,
        summary: "",
        references: [],
        vulnerabilities: [],
        id: 0
    },
    articles: [] as Article[],
    autocompleteSuggestions: [] as DropdownItem[]
}

const ArticleSlice = createSlice({
    name: "articles",
    initialState,
    reducers: {
        getArticleStart: startLoading,
        getArticleFailure: loadingFailed,

        getArticleSuccess(state: ArticleState, { payload }: PayloadAction<Article>) {
            state.article = payload
            state.error = null
            state.loading = false
        }
    }
})

export const {
    getArticleFailure,
    getArticleStart,
    getArticleSuccess
} = ArticleSlice.actions

export default ArticleSlice.reducer

奇怪的是,如果我在页面上保存代码的同时,热重载的进行更新并触发重新渲染,从而正确填充表单。

请注意,我正在使用Redux-Toolkit,因此使用的是切片语法。如果需要更多信息,请告诉我。

0 个答案:

没有答案