编辑页：仅提交变更字段

• 编辑页示例使用 transform 对提交数据做浅层 diff，只发送发生变化的字段；
• mutationMode="pessimistic" 让编辑提交过程更可控；

src/customers/CustomersEdit.tsx

import { Edit, SimpleForm, TextInput, NumberInput } from "@/components/admin";
import { required } from "ra-core";

// 计算浅层变更：仅返回与 previousData 不同的字段
const diffChanged = (
  data: Record<string, any>,
  previous?: Record<string, any>,
) => {
  if (!previous) return data;
  const changed: Record<string, any> = {};
  const isEqual = (a: any, b: any) => {
    try {
      return JSON.stringify(a) === JSON.stringify(b);
    } catch {
      return a === b;
    }
  };
  for (const key of Object.keys(data)) {
    if (!isEqual(data[key], previous[key])) {
      changed[key] = data[key];
    }
  }
  return changed;
};

export const CustomersEdit = () => (
  <Edit
    mutationMode="pessimistic"
    // 在保存前只发送变更字段，避免未变化的值被更新
    transform={(data, options) => diffChanged(data as any, options?.previousData as any)}
  >
    <SimpleForm>
      <TextInput source="name" label="名称" validate={required()} />
      <NumberInput source="age" label="年龄" />
      <TextInput source="email" label="邮箱" type="email" />
    </SimpleForm>
  </Edit>
);

export default CustomersEdit;