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* docs: unique id * test: Update snapshot
111 lines
3.1 KiB
Markdown
111 lines
3.1 KiB
Markdown
---
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order: 4.2
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title:
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zh-CN: 复杂的动态增减表单项
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en-US: Complex Dynamic Form Item
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---
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## zh-CN
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这个例子演示了一个表单中包含多个表单控件的情况。
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## en-US
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This example demonstrates the case that a form contains multiple form controls.
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```tsx
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import { MinusCircleOutlined, PlusOutlined } from '@ant-design/icons';
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import { Button, Form, Input, Select, Space } from 'antd';
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import React from 'react';
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const { Option } = Select;
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const areas = [
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{ label: 'Beijing', value: 'Beijing' },
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{ label: 'Shanghai', value: 'Shanghai' },
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];
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const sights = {
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Beijing: ['Tiananmen', 'Great Wall'],
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Shanghai: ['Oriental Pearl', 'The Bund'],
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};
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type SightsKeys = keyof typeof sights;
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const App: React.FC = () => {
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const [form] = Form.useForm();
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const onFinish = (values: any) => {
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console.log('Received values of form:', values);
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};
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const handleChange = () => {
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form.setFieldsValue({ sights: [] });
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};
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return (
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<Form form={form} name="dynamic_form_complex" onFinish={onFinish} autoComplete="off">
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<Form.Item name="area" label="Area" rules={[{ required: true, message: 'Missing area' }]}>
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<Select options={areas} onChange={handleChange} />
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</Form.Item>
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<Form.List name="sights">
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{(fields, { add, remove }) => (
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<>
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{fields.map(field => (
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<Space key={field.key} align="baseline">
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<Form.Item
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noStyle
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shouldUpdate={(prevValues, curValues) =>
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prevValues.area !== curValues.area || prevValues.sights !== curValues.sights
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}
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>
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{() => (
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<Form.Item
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{...field}
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label="Sight"
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name={[field.name, 'sight']}
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rules={[{ required: true, message: 'Missing sight' }]}
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>
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<Select disabled={!form.getFieldValue('area')} style={{ width: 130 }}>
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{(sights[form.getFieldValue('area') as SightsKeys] || []).map(item => (
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<Option key={item} value={item}>
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{item}
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</Option>
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))}
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</Select>
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</Form.Item>
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)}
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</Form.Item>
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<Form.Item
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{...field}
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label="Price"
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name={[field.name, 'price']}
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rules={[{ required: true, message: 'Missing price' }]}
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>
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<Input />
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</Form.Item>
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<MinusCircleOutlined onClick={() => remove(field.name)} />
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</Space>
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))}
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<Form.Item>
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<Button type="dashed" onClick={() => add()} block icon={<PlusOutlined />}>
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Add sights
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</Button>
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</Form.Item>
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</>
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)}
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</Form.List>
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<Form.Item>
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<Button type="primary" htmlType="submit">
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Submit
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</Button>
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</Form.Item>
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</Form>
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);
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};
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export default App;
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```
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