如何在 Redux 中的 asyncThunk.fulfilled 操作期间更新数组中的对象

how to update an object within an array during an asyncThunk.fulfilled action in Redux

我有一个名为 likePost 的 AsyncThunk 方法,当用户在 post 上单击 like 时,它将通过调度发送此操作。该方法运行良好,在我的数据库中 Post 已成功更新,但我无法让 Redux 更新 .fulfilled 方法期间喜欢的 Post。

这是我目前正在使用的东西:

// shoes = [{_id: '', title: '', likes: []}, ...{}]
export const likePost = createAsyncThunk(
  'posts/likePost',
  async (payload, { rejectWithValue }) => {
    try {
      const response = await userTokenAxios.post(`/${payload}/like`);
      return response.data;
    } catch (error) {
      return rejectWithValue(error.response.data);
    }
  }
);

[likePost.fulfilled]: (state, action) => {
      const post = state.posts.find((post) => post._id === action.payload._id);
      post.likes.push(action.payload.user);
},

不是查找 post,而是在 state.posts 中获取该对象的索引 const post = state.posts.find((post) => post._id === action.payload._id);

const postIndex=state.posts.findIndex((post)=> post._id === action.payload._id);

现在您可以将 user 推送到 likes 数组中:

state.posts[postIndex].likes.push(action.payload.user)