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components/com_newsfeeds/src/Controller/DisplayController.php

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+<?php
+
+/**
+ * @package     Joomla.Site
+ * @subpackage  com_newsfeeds
+ *
+ * @copyright   (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+namespace Joomla\Component\Newsfeeds\Site\Controller;
+
+use Joomla\CMS\MVC\Controller\BaseController;
+
+// phpcs:disable PSR1.Files.SideEffects
+\defined('_JEXEC') or die;
+// phpcs:enable PSR1.Files.SideEffects
+
+/**
+ * Newsfeeds Component Controller
+ *
+ * @since  1.5
+ */
+class DisplayController extends BaseController
+{
+    /**
+     * Method to show a newsfeeds view
+     *
+     * @param   boolean  $cachable   If true, the view output will be cached
+     * @param   array    $urlparams  An array of safe URL parameters and their variable types.
+     *                   @see        \Joomla\CMS\Filter\InputFilter::clean() for valid values.
+     *
+     * @return  static  This object to support chaining.
+     *
+     * @since   1.5
+     */
+    public function display($cachable = false, $urlparams = false)
+    {
+        $cachable = true;
+
+        // Set the default view name and format from the Request.
+        $vName = $this->input->get('view', 'categories');
+        $this->input->set('view', $vName);
+
+        if ($this->app->getIdentity()->get('id') || ($this->input->getMethod() === 'POST' && $vName === 'category')) {
+            $cachable = false;
+        }
+
+        $safeurlparams = [
+            'id'               => 'INT',
+            'limit'            => 'UINT',
+            'limitstart'       => 'UINT',
+            'filter_order'     => 'CMD',
+            'filter_order_Dir' => 'CMD',
+            'lang'             => 'CMD',
+        ];
+
+        return parent::display($cachable, $safeurlparams);
+    }
+}