ant-design/components/mention/demo/controlled.md

---
order: 4
title:
  zh-CN: 配合 Form 使用
  en-US: With Form
---

## zh-CN

受控模式，例如配合 Form 使用。

## en-US

Controlled mode, for example, to work with `Form`.

```jsx
import { Mention, Form, Button } from 'antd';

const { toContentState, getMentions } = Mention;
const FormItem = Form.Item;

class App extends React.Component {
  state = {
    initValue: toContentState('@afc163'),
  };

  handleReset = e => {
    e.preventDefault();
    this.props.form.resetFields();
  };

  handleSubmit = e => {
    e.preventDefault();
    this.props.form.validateFields((errors, values) => {
      if (errors) {
        console.log('Errors in the form!!!');
        return;
      }
      console.log('Submit!!!');
      console.log(values);
    });
  };

  checkMention = (rule, value, callback) => {
    const { getFieldValue } = this.props.form;
    const mentions = getMentions(getFieldValue('mention'));
    if (mentions.length < 2) {
      callback(new Error('More than one must be selected!'));
    } else {
      callback();
    }
  };

  render() {
    const { getFieldDecorator, getFieldValue } = this.props.form;
    console.log('>> render', getFieldValue('mention') === this.state.initValue);
    return (
      <Form layout="horizontal">
        <FormItem
          id="control-mention"
          label="Top coders"
          labelCol={{ span: 6 }}
          wrapperCol={{ span: 16 }}
        >
          {getFieldDecorator('mention', {
            rules: [{ validator: this.checkMention }],
            initialValue: this.state.initValue,
          })(
            <Mention
              defaultSuggestions={['afc163', 'benjycui', 'yiminghe', 'RaoHai', '中文', 'にほんご']}
            />,
          )}
        </FormItem>
        <FormItem wrapperCol={{ span: 14, offset: 6 }}>
          <Button type="primary" onClick={this.handleSubmit}>
            Submit
          </Button>
          &nbsp;&nbsp;&nbsp;
          <Button onClick={this.handleReset}>Reset</Button>
        </FormItem>
      </Form>
    );
  }
}

const FormDemo = Form.create()(App);

ReactDOM.render(<FormDemo />, mountNode);
```