Smile\ElasticsuiteCatalog\Block\Navigation\Renderer\Attribute::getJsLayout PHP Method

    public function getJsLayout()
    {
        $filterItems = $this->getFilter()->getItems();
        $jsLayoutConfig = ['component' => self::JS_COMPONENT, 'maxSize' => (int) $this->getFilter()->getAttributeModel()->getFacetMaxSize(), 'hasMoreItems' => (bool) $this->getFilter()->hasMoreItems(), 'ajaxLoadUrl' => $this->getAjaxLoadUrl()];
        foreach ($filterItems as $item) {
            $jsLayoutConfig['items'][] = $item->toArray(['label', 'count', 'url', 'is_selected']);
        }
        return json_encode($jsLayoutConfig);
    }