Fixes #4146: Added `yii\bootstrap\ButtonDropdown::$containerOptions`

ButtonDropdown.php

@@ -7,6 +7,7 @@
 
 namespace yii\bootstrap;
 
+use yii\helpers\ArrayHelper;
 use yii\helpers\Html;
 
 /**
@@ -37,6 +38,15 @@ class ButtonDropdown extends Widget
      * @var string the button label
      */
     public $label = 'Button';
+    /**
+     * @var array the HTML attributes for the container tag. The following special options are recognized:
+     *
+     * - tag: string, defaults to "div", the name of the container tag.
+     *
+     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
+     * @since 2.0.1
+     */
+    public $containerOptions = [];
     /**
      * @var array the HTML attributes of the button.
      * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
@@ -65,10 +75,14 @@ class ButtonDropdown extends Widget
      */
     public function run()
     {
-        echo Html::beginTag('div', ['class' => 'btn-group']);
+        Html::addCssClass($this->containerOptions, 'btn-group');
+        $options = $this->containerOptions;
+        $tag = ArrayHelper::remove($options, 'tag', 'div');
+
+        echo Html::beginTag($tag, $this->containerOptions);
         echo "\n" . $this->renderButton();
         echo "\n" . $this->renderDropdown();
-        echo "\n" . Html::endTag('div');
+        echo "\n" . Html::endTag($tag);
         $this->registerPlugin('button');
     }
 

CHANGELOG.md

@@ -6,6 +6,7 @@ Yii Framework 2 bootstrap extension Change Log
 
 - Bug #5570: `yii\bootstrap\Tabs` would throw an exception if `content` is not set for one of its `items` (RomeroMsk)
 - Bug #6150: `yii\bootstrap\Tabs` dropdown IDs were generated incorrectly (samdark)
+- Enh #4146: Added `yii\bootstrap\ButtonDropdown::$containerOptions` (samdark)
 - Enh #4181: Added `yii\bootstrap\Modal::$headerOptions` and `yii\bootstrap\Modal::$footerOptions` (tuxoff, samdark)
 - Enh #4450: Added `yii\bootstrap\Nav::renderDropdown()` (qiangxue)
 - Enh #5735: Added `yii\bootstrap\Tabs::renderTabContent` to support manually rendering tab contents (RomeroMsk)