Fetch 为空 Redux Saga

Question

我 5 分钟前才开始学习 Redux Saga

我的传奇：

import axios from "axios";
import {call, put, takeLatest} from "redux-saga/effects";
import {
    USERS_FETCH_REQUESTED,
    USERS_FETCH_SUCCEEDED,
    USERS_FETCH_FAILED
} from 'actions/constants'

function *fetchUsers(action) {
  try {
    const response = yield call(fetch, 'https://jsonplaceholder.typicode.com/users');
    const data = response.json();
    console.log(data)
    yield put({type: USERS_FETCH_SUCCEEDED, payload: data});
  } catch (e) {
    yield put({type: USERS_FETCH_FAILED, payload: e.message});
  }
}

function* mySaga() {
    yield takeLatest(USERS_FETCH_REQUESTED, fetchUsers);
}

export default mySaga

出于某种原因，我的 SUCCES_FETCH 的有效负载只是一个空对象，但日志返回 10 10 个项目。

我做错了什么？

Answer 1

response.json() returns一个promise，需要等待promise resolve才能拿到物品

const data = yield call([response, 'json']);

这将产生调用 response.json() 的效果，并在 promise 解析后将结果反馈到 saga。

Fetch 为空 Redux Saga

Fetch is empty Redux Saga

javascript

reducers

reactjs

redux

redux-saga