如何修复:在react-admin中未定义响应

// 示例：使用fetch检查API端点
fetch('https://your-api-endpoint.com/data')
  .then(response => {
    if (!response.ok) {
      throw new Error('Network response was not ok');
    }
    return response.json();
  })
  .then(data => console.log(data))
  .catch(error => console.error('There was a problem with the fetch operation:', error));

import React, { useEffect, useState } from 'react';

const MyComponent = () => {
  const [data, setData] = useState(null);
  const [error, setError] = useState(null);

  useEffect(() => {
    fetch('https://your-api-endpoint.com/data')
      .then(response => {
        if (!response.ok) {
          throw new Error('Network response was not ok');
        }
        return response.json();
      })
      .then(data => setData(data))
      .catch(error => setError(error));
  }, []);

  if (error) {
    return <div>Error: {error.message}</div>;
  }

  if (!data) {
    return <div>Loading...</div>;
  }

  return (
    <div>
      {/* 渲染数据 */}
      {data.map(item => (
        <div key={item.id}>{item.name}</div>
      ))}
    </div>
  );
};

export default MyComponent;

import * as React from 'react';
import { List, Datagrid, TextField } from 'react-admin';

const MyList = (props) => (
  <List {...props}>
    <Datagrid>
      <TextField source="id" />
      <TextField source="name" />
    </Datagrid>
  </List>
);

export default MyList;