React Query データベース プラグイン: データの結合と分割に関するヒント

import { useQuery, useMutation } from 'react-query';
import { mergeData } from 'react-query-database-plugin';

const getUserData = async () => {
  const users = await fetch('https://api.example.com/users');
  const posts = await fetch('https://api.example.com/posts');
  const comments = await fetch('https://api.example.com/comments');

  const data = await Promise.all([users.json(), posts.json(), comments.json()]);
  return mergeData(data);
};

const Users = () => {
  const { data } = useQuery('users', getUserData);

  if (data) {
    return (
      <ul>
        {data.map((user) => (
          <li key={user.id}>{user.name}</li>
        ))}
      </ul>
    );
  }

  return <div>Loading...</div>;
};

import { useQuery } from 'react-query';
import { splitData } from 'react-query-database-plugin';

const getUsers = () => {
  // 使用 fetch 或其他方法获取用户数据
};

const getUserPosts = (userId) => {
  // 使用 fetch 或其他方法获取指定用户的帖子数据
};

const UserPosts = ({ userId }) => {
  const { data: users } = useQuery('users', getUsers);
  const { data: posts } = useQuery(['userPosts', userId], () => getUserPosts(userId));

  if (users && posts) {
    const user = users.find((user) => user.id === userId);

    return (
      <div>
        <h2>{user.name}</h2>
        <ul>
          {posts.map((post) => (
            <li key={post.id}>{post.title}</li>
          ))}
        </ul>
      </div>
    );
  }

  return <div>Loading...</div>;
};