Unable to add countItems method for an extension where the category s…

…ystem is used in two instances

Summary of Changes

Fix for the issue #9186
Unable to add countItems method for an extension where the category
system is used in two instances #9186

Testing Instructions

Setup a component with two instances of the category. For example:

a. component com_mycomponent has two types of items type1 and type2
b. type1 uses Joomla category system with extension name as
com_mycomponent
c. type2 uses Joomla category system with extension name as
com_mycomponent.type2

countItems feature works for both categories instances.

administrator/components/com_categories/models/categories.php

@@ -361,7 +361,7 @@ public function getItems()
 			$extension = $this->getState('filter.extension');
 
 			// Load Helper file of the component for which com_categories displays the categories
-			$classname = ucfirst(substr($extension, 4)) . 'Helper';
+			$classname = ucfirst(str_replace('.', '', substr($extension, 4))) . 'Helper';
 
 			if (class_exists($classname) && method_exists($classname, 'countItems'))
 			{