Create Page: Form Input and Validation

• Use Create + SimpleForm to build create forms.
• Use required() for required-field validation.

src/customers/CustomersCreate.tsx

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

export const CustomersCreate = () => (
  <Create>
    <SimpleForm>
      <TextInput source="name" label="Name" validate={required()} />
      <NumberInput source="age" label="Age" />
      <TextInput source="email" label="Email" type="email" />
    </SimpleForm>
  </Create>
);

export default CustomersCreate;