响应对象未分配给变量 REDUX-SAGA

Question

后端的响应有问题。

我使用 mongoose 删除了一个具有特定 _id 的项目。

创建方法运行良好，我可以获得值响应并将其分配给变量。

删除也很有效，但我无法获取响应值以将响应分配给变量 const post

function* deletePostSaga(action) {
  try {
    console.log("_id: ", action.payload);
    const post = yield call(api.deletePost, action.payload);
    console.log("Post - Delete: ", post);
    yield put(actions.deletePost.deletePostSuccess(post));
  } catch (err) {
    console.error(err);
    yield put(actions.deletePost.deletePostFailure(err));
  }
}

api.deletePost:

import axios from "axios";

export const fetchPosts = () => axios.get(`/posts`);

export const createPost = (payload) => axios.post(`/posts`, payload);

export const updatePost = (payload) => axios.put("/posts", { data: payload });

export const deletePost = (payload) => {
  console.log(payload);
  axios.delete(`/posts`, { data: payload });
};

项目被删除，我从devtool检查网络并检查预览，我也得到了响应对象：

message: "Delete successfully"
post: {author: "Anonymous", likeCount: 0, _id: "60d99146df51c152f189b1c4", title: "123", content: "123",…}
attachment: ""
author: "Anonymous"
content: "123"
createdAt: "2021-06-28T09:07:18.178Z"
likeCount: 0
title: "123"
updatedAt: "2021-06-28T09:07:18.178Z"
__v: 0
_id: "60d99146df51c152f189b1c4"
success: true

只是不知道为什么我无法将响应分配给const post变量，它只是显示为undefined。感谢阅读。

Answer 1

您需要将 deletePost 的值从 axios 更新为 return。您可以像这样使用 async await：

deletePost = async (payload) => {
  console.log(payload);
  const response = await axios.delete(`/posts`, { data: payload });
  return response
};

Answer 2

deletePost = async (payload) => {
    console.log(payload);
    const response = await axios.delete(`/posts`, { data: payload });
    return response;
};

在使用 async 关键字时，您需要使用 await 才能进行阻塞调用。

响应对象未分配给变量 REDUX-SAGA

The response object not assign to the variable REDUX-SAGA

node.js

reactjs

mongoose

redux-saga