React-hook-form-mui（五）：包含内嵌表单元素的表单

本文介绍: 在实际项目中，从后端获取的数据可能是复杂的数据对象，本文将介绍，如何通过`react–hook-form–m ui`实现一个包含内嵌表单元素的表单

前言

在上一篇文章中，我们介绍了react-hook-form-mui如何与与后端数据联调。在实际项目中，从后端获取的数据可能是复杂的数据对象，本文将介绍，如何通过react-hook-form-mui实现一个包含内嵌表单元素的表单

Demo

import React from 'react';
import { useForm } from 'react-hook-form';
import { Button, MenuItem } from '@mui/material';
import { FormContainer, TextFieldElement } from 'react-hook-form-mui';

//内嵌表单元素
const InnerForm = ({ index }: any) =&gt; {
  return (
    <&gt;
      <TextFieldElement name={`items[${index}].name`} label="Name" /&gt;
      <TextFieldElement
        name={`items[${index}].quantity`}
        label="Quantity"
        type="number"
      /&gt;
    </&gt;
  );
};

const MyForm = () =&gt; {
  const formContext = useForm({
    defaultValues: {
      firstName: '',
      lastName: '',
      email: '',
      gender: '',
      age: '',
      items: [{ name: '', quantity: '' }]
    }
  });
  const { watch } = formContext;

  const onSubmit = (data) =&gt; {
    console.log(data);
  };

  return (
    <FormContainer
      formContext={formContext}
      onSuccess={(data) =&gt; {
        onSubmit(data);
      }}
    >
      <TextFieldElement name="firstName" label="First Name" />
      <TextFieldElement name="lastName" label="Last Name" />
      <TextFieldElement name="email" label="Email" />
      <TextFieldElement select name="gender" label="Gender">
        <MenuItem value="male">Male</MenuItem>
        <MenuItem value="female">Female</MenuItem>
      </TextFieldElement>
      <TextFieldElement name="age" label="Age" type="number" />
      {watch('items')?.map((_, index) =>
        <InnerForm key={index} index={index} />
      )}
      //像数组中插入表新的元素
      <Button
        type="button"
        onClick={() => watch('items').push({ name: '', quantity: '' })}
      >
        Add Item
      </Button>
      <Button type="submit">Submit</Button>
    </FormContainer>
  );
};

export default MyForm;

解析

//内嵌表单元素
const InnerForm = ({ index }: any) => {
  return (
    <>
      <TextFieldElement name={`items[${index}].name`} label="Name" />
      <TextFieldElement
        name={`items[${index}].quantity`}
        label="Quantity"
        type="number"
      />
    </>
  );
};