Ant Design 表单联动

<Form.Item label="这是一个标题" name="heading" valuePropName="checked">
    <Switch onChange={changeHeadingState} />
</Form.Item>
<Form.Item dependencies={['heading']} noStyle>
    {({ getFieldValue }) => {
    const type = getFieldValue('heading')
    if (type) {
    return (
    <Form.Item label="标题级别" name="heading_lvl" dependencies={['heading']}>
        <Select style={basic_style} options={heading_lvl_type} disabled={!headingState} />
    </Form.Item>
    )
    } else {
    return null
    }
    }}
</Form.Item>