TypeError: Cannot read property 'pipe' of undefined in Redux-Observable

Question

我有一个来自 redux-observable 的问题。在调试时我可以看到 api 工作成功但 redux-observable 无法工作......我不知道如何修复......我尝试替换动作并且没关系但是当我替换旧动作时我得到一个错误...

错误

TypeError: Cannot read property 'pipe' of undefined
SwitchMapSubscriber.project
src/containers/detailedProduct/DetailedProductEpic.js:27
  24 | 
  25 | export const updateProductEpic = (action$, store$, { updateProductService }) => action$.pipe(
  26 |   ofType(UPDATE_PRODUCT),
> 27 |   switchMap(({ payload }) => updateProductService(payload).pipe(
  28 |     map(res => updateProductSuccess(res)),
  29 |     catchError(err => updateProductFail(err)),
  30 |   )),

在apiService.js

static addProduct = dataProduct => from(
    axios.post(`${API}/products`, dataProduct, {
      headers: {
        'Content-Type': 'application/json',
      },
    }),
  );

  static updateProduct = dataProduct => {
    const id = dataProduct.get('id');
    from(
      axios.put(`${API_LOCALHOST}/products/${id}`, dataProduct, {
        headers: {
          'Content-Type': 'application/json',
        },
      }),
    );
  };

在DetailedProductEpic.js

export const addProductEpic = (action$, store$, { addProductService }) => action$.pipe(
  ofType(ADD_PRODUCT),
  switchMap(({ payload }) => addProductService(payload).pipe(
    map(res => addProductSuccess(res)),
    catchError(err => addProductFail(err)),
  )),
);

export const updateProductEpic = (action$, store$, { updateProductService }) => action$.pipe(
  ofType(UPDATE_PRODUCT),
  switchMap(({ payload }) => updateProductService(payload).pipe(
    map(res => updateProductSuccess(res)),
    catchError(err => updateProductFail(err)),
  )),
);

网络：api return 可以，但是 redux-observable 不工作

Request URL: http://localhost:8080/products/64a96b67-a7a9-41c4-96d6-2888b3298734
Request Method: PUT
Status Code: 200 
Remote Address: [::1]:8080
Referrer Policy: no-referrer-when-downgrade

Answer 1

我已经解决了这个问题...在 apiservice 中我忘记了 return 在 updateProduct 函数中

TypeError: Cannot read property 'pipe' of undefined in Redux-Observable

TypeError: Cannot read property 'pipe' of undefined in Redux-Observable

rxjs

reactjs

redux-observable