Allow to show posts count in Categories sidebar widget

Author: ihorvansach

Block/Sidebar/Categories.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Copyright © 2015 Ihor Vansach ([email protected]). All rights reserved.
+ * Copyright © 2017 Ihor Vansach ([email protected]). All rights reserved.
  * See LICENSE.txt for license details (http://opensource.org/licenses/osl-3.0.php).
  *
  * Glory to Ukraine! Glory to the heroes!
@@ -62,6 +62,21 @@ public function getGroupedChilds()
         return $this->getData($k);
     }
 
+    /**
+     * Retrieve true if need to show posts count
+     * @return int
+     */
+    public function showPostsCount()
+    {
+        $key = 'show_posts_count';
+        if (!$this->hasData($key)) {
+            $this->setData($key, (bool)$this->_scopeConfig->getValue(
+                'mfblog/sidebar/'.$this->_widgetKey.'/show_posts_count', ScopeInterface::SCOPE_STORE
+            ));
+        }
+        return $this->getData($key);
+    }
+
 
     /**
      * Retrieve block identities

Model/Category.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Copyright © 2016 Ihor Vansach ([email protected]). All rights reserved.
+ * Copyright © 2017 Ihor Vansach ([email protected]). All rights reserved.
  * See LICENSE.txt for license details (http://opensource.org/licenses/osl-3.0.php).
  *
  * Glory to Ukraine! Glory to the heroes!
@@ -55,6 +55,11 @@ class Category extends \Magento\Framework\Model\AbstractModel
      */
     protected $_url;
 
+    /**
+     * @var \Magefan\Blog\Model\ResourceModel\Post\CollectionFactory
+     */
+    protected $postCollectionFactory;
+
     /**
      * Initialize dependencies.
      *
@@ -69,11 +74,13 @@ public function __construct(
         \Magento\Framework\Model\Context $context,
         \Magento\Framework\Registry $registry,
         Url $url,
+        \Magefan\Blog\Model\ResourceModel\Post\CollectionFactory $postCollectionFactory,
         \Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
         \Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
         array $data = []
     ) {
         $this->_url = $url;
+        $this->postCollectionFactory = $postCollectionFactory;
         parent::__construct($context, $registry, $resource, $resourceCollection, $data);
     }
 
@@ -305,4 +312,30 @@ public function isVisibleOnStore($storeId)
     {
         return $this->getIsActive() && array_intersect([0, $storeId], $this->getStoreIds());
     }
+
+    /**
+     * Retrieve number of posts in this category
+     *
+     * @return int
+     */
+    public function getPostsCount()
+    {
+        $key = 'posts_count';
+        if (!$this->hasData($key)) {
+
+            $categories = $this->getChildrenIds();
+            $categories[] = $this->getId();
+
+            $posts = $this->postCollectionFactory->create()
+                ->addActiveFilter()
+                ->addStoreFilter($this->getStoreId())
+                ->addCategoryFilter($categories);
+
+
+
+            $this->setData($key, (int)$posts->getSize());
+        }
+
+        return $this->getData($key);
+    }
 }

etc/adminhtml/system.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!--
 /**
- * Copyright © 2016 Ihor Vansach ([email protected]). All rights reserved.
+ * Copyright © 2017 Ihor Vansach ([email protected]). All rights reserved.
  * See LICENSE.txt for license details (http://opensource.org/licenses/osl-3.0.php).
  *
  * Glory to Ukraine! Glory to the heroes!
@@ -177,6 +177,10 @@
                         <label>Enabled</label>
                         <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                     </field>
+                    <field id="show_posts_count" translate="label comment" type="select" sortOrder="15" showInDefault="1" showInWebsite="1" showInStore="1">
+                        <label>Display Number Of Posts</label>
+                        <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
+                    </field>
                     <field id="sort_order" translate="label comment" type="text" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                         <label>Sort Order</label>
                     </field>

etc/config.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!--
 /**
- * Copyright © 2016 Ihor Vansach ([email protected]). All rights reserved.
+ * Copyright © 2017 Ihor Vansach ([email protected]). All rights reserved.
  * See LICENSE.txt for license details (http://opensource.org/licenses/osl-3.0.php).
  *
  * Glory to Ukraine! Glory to the heroes!
@@ -48,6 +48,7 @@
                 </search>
                 <categories>
                     <enabled>1</enabled>
+                    <show_posts_count>1</show_posts_count>
                     <sort_order>20</sort_order>
                 </categories>
                 <recent_posts>

view/frontend/templates/sidebar/categories.phtml

@@ -1,6 +1,6 @@
 <?php
 /**
- * Copyright © 2015 Ihor Vansach ([email protected]). All rights reserved.
+ * Copyright © 2017 Ihor Vansach ([email protected]). All rights reserved.
  * See LICENSE.txt for license details (http://opensource.org/licenses/osl-3.0.php).
  *
  * Glory to Ukraine! Glory to the heroes!
@@ -49,6 +49,9 @@
 					<a href="<?php echo $item->getCategoryUrl() ?>">
 						<?php echo $block->escapeHtml($item->getTitle()) ?>
 					</a>
+					<?php if ($block->showPostsCount()) { ?>
+					(<?php echo $block->escapeHtml($item->getPostsCount()) ?>)
+					<?php } ?>
 			<?php
 			$level = $newLevel;
 			$first = false;