Allow FormItem.help to be boolean

components/form/FormItem.jsx

@@ -109,6 +109,7 @@ class FormItem extends React.Component {
       [`${prefixCls}-item`]: true,
       [`${prefixCls}-item-compact`]: this._isCompact(props.children),
       [`${prefixCls}-item-with-help`]: !!props.help,
+      [`${props.className}`]: !!props.className,
     };
 
     return (
@@ -128,7 +129,7 @@ FormItem.propTypes = {
   prefixCls: React.PropTypes.string,
   label: React.PropTypes.node,
   labelCol: React.PropTypes.object,
-  help: React.PropTypes.node,
+  help: React.PropTypes.oneOfType([React.PropTypes.node, React.PropTypes.bool]),
   validateStatus: React.PropTypes.oneOf(['', 'success', 'warning', 'error', 'validating']),
   hasFeedback: React.PropTypes.bool,
   wrapperCol: React.PropTypes.object,

components/form/demo/validate.md

@@ -73,6 +73,25 @@ ReactDOM.render(
       <Input defaultValue="无效选择" id="error" />
     </FormItem>
 
+    <FormItem
+      label="Datepicker："
+      labelCol={{span: 5}}
+      help>
+      <Col span="6">
+        <FormItem validateStatus="error" help="请选择正确日期">
+          <DatePicker />
+        </FormItem>
+      </Col>
+      <Col span="1">
+        <p className="ant-form-split">-</p>
+      </Col>
+      <Col span="6">
+        <FormItem>
+          <DatePicker />
+        </FormItem>
+      </Col>
+    </FormItem>
+
     <FormItem
       label="Datepicker："
       labelCol={{span: 5}}
@@ -88,26 +107,7 @@ ReactDOM.render(
         <DatePicker />
       </Col>
       <Col span="19" offset="5">
-        <p className="ant-form-explain">请输入正确选项</p>
-      </Col>
-    </FormItem>
-
-    <FormItem
-      label="Datepicker："
-      labelCol={{span: 5}}>
-      <Col span="6">
-        <FormItem validateStatus="error">
-          <DatePicker />
-          <p className="ant-form-explain">请输入正确选项</p>
-        </FormItem>
-      </Col>
-      <Col span="1">
-        <p className="ant-form-split">-</p>
-      </Col>
-      <Col span="6">
-        <FormItem>
-          <DatePicker />
-        </FormItem>
+        <p className="ant-form-explain">请选择正确日期</p>
       </Col>
     </FormItem>
   </Form>