title: Ant Design: Validating form fields w/custom validators
body: <p>I'd like to use <a href="https://ant.design/components/notification/" rel="nofollow noreferrer">notifications</a> to push form feedback, instead of the inline messaging. e.g.</p>
  
  <pre><code>&lt;Form.Item label="Name"&gt;
    {getFieldDecorator("name", {
      rules: [
        {
          validator(rule, value, callback) {
            if (!value) {
              callback("Enter Your Name");
  
              // I'd like to use this instead:
              // notification.open({
              //   message: "Enter Your Name",
              //   description:
              //     'This is the content of the notification.',
              // })
            }
  
            callback();
          }
        }
      ]
    })(&lt;Name /&gt;)}
  &lt;/Form.Item&gt;;
  </code></pre>
  
  <p>Is is possible to validate form fields and maintain the visual feedback (i.e. things like the <code>border-color</code> change), without the inline messaging?</p>