Helpertreecategory Does Not Load Child Categories When A Category Is Expanded

[agjjr]

Hi there.

 

I am developing a AdminController for a module, and I need to add the tree for category filtering. I am using the code

            $tree = new HelperTreeCategories('associated-categories-tree', $this->l('Filter by category'));
            $tree->setAttribute('is_category_filter', (bool) $this->id_current_category)
                ->setInputName('id-category')
                ->setAttribute('is_category_filter', isset($_GET["id_category"]))
                ->setAttribute('base_url', preg_replace('#&id_category=[0-9]*#', '', self::$currentIndex) . '&token=' . $this->token);

            if (isset($_GET["id_category"]))
            {
                $tree->setSelectedCategories(array($_GET["id_category"]));
            }
            else
            {
                $tree->setSelectedCategories(array(1));
            }

            $this->context->smarty->assign(
                array(                    
                    "tree_view"  => $tree->render()
                )
            );

The tree is generated correctly, with the root category displayed. When the root category is expanded, I see its subcategories. But when these subcategories are expanded, no other categories are displayed. 

 

 

I noticed in the AdminProducts controller that when a category is selected and the tree is expanded, a request is triggered in order to load the subcategories.

 

 

But this is not happening in my controller. When a category is selected, the tree is expanded, but no ajax requests are performed. Am I missing something for this helper to work properly? Some javascript that may be missing, or maybe some html class that must be used in the tree container div?

[neogest.com.br]

Any solution to the problem?