使用params调用操作

Question

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

行动：

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> ();

呼叫调度：

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;
}),
};

它正在工作——对API进行调用，但没有参数。我试了很多次，但仍然不知道如何在调用调度时传递参数。

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调度：

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

我还需要修改这个：

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))
)
)