Menu active condition fix.

Code style correcting.
PHPDoc filling misses.

Author: nikosid

backend/views/layouts/base.php

@@ -8,9 +8,7 @@
 
 $bundle = BackendAsset::register($this);
 
-$this->params['body-class'] = array_key_exists('body-class', $this->params) ?
-    $this->params['body-class']
-    : null;
+$this->params['body-class'] = $this->params['body-class'] ?? null;
 ?>
 
 <?php $this->beginPage() ?>
@@ -39,4 +37,4 @@
     <?php $this->endBody() ?>
 <?php echo Html::endTag('body') ?>
 </html>
-<?php $this->endPage() ?>
+<?php $this->endPage() ?>

backend/views/layouts/clear.php

@@ -1,8 +1,9 @@
 <?php
 /**
  * @var $this yii\web\View
+ * @var $content string
  */
 ?>
 <?php $this->beginContent('@backend/views/layouts/common.php'); ?>
     <?php echo $content ?>
-<?php $this->endContent(); ?>
+<?php $this->endContent(); ?>

backend/views/layouts/common.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * @var $this    yii\web\View
+ * @var $this yii\web\View
  * @var $content string
  */
 
@@ -154,7 +154,7 @@ class="img-circle"/>
                         'label' => Yii::t('backend', 'Users'),
                         'icon' => '<i class="fa fa-users"></i>',
                         'url' => ['/user/index'],
-                        'active' => (Yii::$app->controller->id == 'user'),
+                        'active' => Yii::$app->controller->id === 'user',
                         'visible' => Yii::$app->user->can('administrator'),
                     ],
                     [
@@ -165,26 +165,27 @@ class="img-circle"/>
                         'label' => Yii::t('backend', 'Static pages'),
                         'url' => ['/content/page/index'],
                         'icon' => '<i class="fa fa-thumb-tack"></i>',
-                        'active' => (Yii::$app->controller->id == 'page'),
+                        'active' => Yii::$app->controller->id === 'page',
                     ],
                     [
                         'label' => Yii::t('backend', 'Articles'),
                         'url' => '#',
                         'icon' => '<i class="fa fa-files-o"></i>',
                         'options' => ['class' => 'treeview'],
-                        'active' => (Yii::$app->controller->module->id == 'article'),
+                        'active' => 'content' === Yii::$app->controller->module->id &&
+                            ('article' === Yii::$app->controller->id || 'category' === Yii::$app->controller->id),
                         'items' => [
                             [
                                 'label' => Yii::t('backend', 'Articles'),
                                 'url' => ['/content/article/index'],
                                 'icon' => '<i class="fa fa-file-o"></i>',
-                                'active' => (Yii::$app->controller->id == 'default'),
+                                'active' => Yii::$app->controller->id === 'article',
                             ],
                             [
                                 'label' => Yii::t('backend', 'Categories'),
                                 'url' => ['/content/category/index'],
                                 'icon' => '<i class="fa fa-folder-open-o"></i>',
-                                'active' => (Yii::$app->controller->id == 'category'),
+                                'active' => Yii::$app->controller->id === 'category',
                             ],
                         ],
                     ],
@@ -193,19 +194,19 @@ class="img-circle"/>
                         'url' => '#',
                         'icon' => '<i class="fa fa-code"></i>',
                         'options' => ['class' => 'treeview'],
-                        'active' => (Yii::$app->controller->module->id == 'widget'),
+                        'active' => Yii::$app->controller->module->id === 'widget',
                         'items' => [
                             [
                                 'label' => Yii::t('backend', 'Text Blocks'),
                                 'url' => ['/widget/text/index'],
                                 'icon' => '<i class="fa fa-circle-o"></i>',
-                                'active' => (Yii::$app->controller->id == 'text'),
+                                'active' => Yii::$app->controller->id === 'text',
                             ],
                             [
                                 'label' => Yii::t('backend', 'Menu'),
                                 'url' => ['/widget/menu/index'],
                                 'icon' => '<i class="fa fa-circle-o"></i>',
-                                'active' => (Yii::$app->controller->id == 'menu'),
+                                'active' => Yii::$app->controller->id === 'menu',
                             ],
                             [
                                 'label' => Yii::t('backend', 'Carousel'),

backend/views/layouts/main.php

@@ -1,6 +1,7 @@
 <?php
 /**
  * @var $this yii\web\View
+ * @var $content string
  */
 ?>
 <?php $this->beginContent('@backend/views/layouts/common.php'); ?>
@@ -9,4 +10,4 @@
             <?php echo $content ?>
         </div>
     </div>
-<?php $this->endContent(); ?>
+<?php $this->endContent(); ?>