Fixes #107: Added `yii\bootstrap\Collapse::$autoCloseItems` to allow keeping multiple items open at the same time

CHANGELOG.md

@@ -4,6 +4,8 @@ Yii Framework 2 bootstrap extension Change Log
 2.0.7 under development
 -----------------------
 
+- Enh #107: Added `yii\bootstrap\Collapse::$autoCloseItems` to allow keeping multiple items open at the same time (cebe)
+- Enh #131: Added `tabContentOptions` to set HTML attributes for 'tab-content' container in `Tabs` widget (AndrewKorpusov)
 - Bug #157: Active status of multilevel submenu items of the `yii\bootstrap\Nav` class is determined correctly now (PowerGamer1)
 - Enh #64: Added simplified syntax for specifying `Collapse` widget `$items` (Faryshta, cebe)
 - Enh #131 Added `tabContentOptions` to set HTML attributes for 'tab-content' container in `Tabs` widget (AndrewKorpusov)

Collapse.php

@@ -90,6 +90,12 @@ class Collapse extends Widget
      * @var boolean whether the labels for header items should be HTML-encoded.
      */
     public $encodeLabels = true;
+    /**
+     * @var boolean whether to close other items if an item is opened. Defaults to `true` which causes an
+     * accordion effect. Set this to `false` to allow keeping multiple items open at once.
+     * @since 2.0.7
+     */
+    public $autoCloseItems = true;
 
 
     /**
@@ -164,11 +170,14 @@ class Collapse extends Widget
                 $header = Html::encode($header);
             }
 
-            $headerToggle = Html::a($header, '#' . $id, [
-                    'class' => 'collapse-toggle',
-                    'data-toggle' => 'collapse',
-                    'data-parent' => '#' . $this->options['id']
-                ]) . "\n";
+            $headerOptions = [
+                'class' => 'collapse-toggle',
+                'data-toggle' => 'collapse',
+            ];
+            if ($this->autoCloseItems) {
+                $headerOptions['data-parent'] = '#' . $this->options['id'];
+            }
+            $headerToggle = Html::a($header, '#' . $id, $headerOptions) . "\n";
 
             $header = Html::tag('h4', $headerToggle, ['class' => 'panel-title']);
 

tests/CollapseTest.php

@@ -214,4 +214,28 @@ HTML
 HTML
         , $output);
     }
+
+    public function testAutoCloseItems()
+    {
+        $items = [
+            [
+                'label' => 'Item 1',
+                'content' => 'Content 1',
+            ],
+            [
+                'label' => 'Item 2',
+                'content' => 'Content 2',
+            ],
+        ];
+
+        $output = Collapse::widget([
+            'items' => $items
+        ]);
+        $this->assertContains('data-parent="', $output);
+        $output = Collapse::widget([
+            'autoCloseItems' => false,
+            'items' => $items
+        ]);
+        $this->assertNotContains('data-parent="', $output);
+    }
 }