Question

我正在使用React + Redux + Rxjs + typesafe-actions + TS，我想使用params调用action。我现在的代码：

动作：

import { createAsyncAction } from 'typesafe-actions';
import {ICats} from '/api/cats';

export const FETCH_CATS_REQUEST = 'cats/FETCH_CATS_REQUEST';
export const FETCH_CATS_SUCCESS = 'cats/FETCH_CATS_SUCCESS';
export const FETCH_CATS_ERROR = 'cats/FETCH_CATS_ERROR';

export const fetchCats = createAsyncAction(
    FETCH_CATS_REQUEST,
    FETCH_CATS_SUCCESS,
    FETCH_CATS_ERROR
) <void, ICats, Error> ();

呼叫分派：

store.dispatch(fetchCats.request());

我的史诗：

const fetchCatsFlow: Epic<Types.RootAction, Types.RootAction, Types.RootState> = (action$) =>
    action$.pipe(
        filter(isActionOf(fetchCats.request)),
        switchMap(() =>
            fromPromise(Cats.getDataFromAPI()).pipe(
                map(fetchCats.success),
                catchError(pipe(fetchCats.failure, of))
            )
        )
    );

API：

export const Cats = {
    getDataFromAPI: () => $http.get('/cats').then(res => {
        return res.data as any;
    }),
};

而且有效-调用API但没有参数。我尝试了很多次，但仍然不知道在调用dispatch时如何传递参数。

Answer 1

我找到了答案：

export const fetchCats = createAsyncAction(
    FETCH_CATS_REQUEST,
    FETCH_CATS_SUCCESS,
    FETCH_CATS_ERROR
) <void, ICats, Error> ();

更改为：

type ICatsRequest = {
    catType: string;
};

export const fetchCats = createAsyncAction(
    FETCH_CATS_REQUEST,
    FETCH_CATS_SUCCESS,
    FETCH_CATS_ERROR
) <ICatsRequest, ICats, Error> ();

然后它允许我将指定的类型传递给分派：

store.dispatch(fetchCats.request({catType: 'XXX'}));

我还需要修改它：

export const Cats = {
    getDataFromAPI: (params) => $http.get('/cats', {
        params: {
            type: params.payload.catType
        }
    }).then(res => {
        return res.data as any;
    }),
};

和

switchMap((params) =>
        fromPromise(Cats.getDataFromAPI(params)).pipe(
            map(fetchCats.success),
            catchError(pipe(fetchCats.failure, of))
    )
)

使用参数进行通话

1 个答案: