NodesController::promoted PHP Method

    public function promoted()
    {
        $Node = $this->{$this->modelClass};
        $this->set('title_for_layout', __d('croogo', 'Home'));
        $roleId = $this->Croogo->roleId();
        $this->paginate[$Node->alias]['type'] = 'promoted';
        $visibilityRolesField = $Node->escapeField('visibility_roles');
        $this->paginate[$Node->alias]['conditions'] = array('OR' => array($visibilityRolesField => '', $visibilityRolesField . ' LIKE' => '%"' . $roleId . '"%'));
        if (isset($this->request->params['named']['limit'])) {
            $limit = $this->request->params['named']['limit'];
        } else {
            $limit = Configure::read('Reading.nodes_per_page');
        }
        if (isset($this->request->params['named']['type'])) {
            $type = $Node->Taxonomy->Vocabulary->Type->findByAlias($this->request->params['named']['type']);
            if (!isset($type['Type']['id'])) {
                $this->Session->setFlash(__d('croogo', 'Invalid content type.'), 'flash', array('class' => 'error'));
                return $this->redirect('/');
            }
            if (isset($type['Params']['nodes_per_page']) && empty($this->request->params['named']['limit'])) {
                $limit = $type['Params']['nodes_per_page'];
            }
            $this->paginate[$Node->alias]['conditions'][$Node->escapeField('type')] = $type['Type']['alias'];
            $this->set('title_for_layout', $type['Type']['title']);
            $this->set(compact('type'));
        }
        $this->paginate[$Node->alias]['limit'] = $limit;
        if ($this->usePaginationCache) {
            $cacheNamePrefix = 'nodes_promoted_' . $this->Croogo->roleId() . '_' . Configure::read('Config.language');
            if (isset($type)) {
                $cacheNamePrefix .= '_' . $type['Type']['alias'];
            }
            $this->paginate['page'] = isset($this->request->params['named']['page']) ? $this->request->params['named']['page'] : 1;
            $cacheName = $cacheNamePrefix . '_' . $this->paginate['page'] . '_' . $limit;
            $cacheNamePaging = $cacheNamePrefix . '_' . $this->paginate['page'] . '_' . $limit . '_paging';
            $cacheConfig = 'nodes_promoted';
            $nodes = Cache::read($cacheName, $cacheConfig);
            if (!$nodes) {
                $nodes = $this->paginate($Node->alias);
                Cache::write($cacheName, $nodes, $cacheConfig);
                Cache::write($cacheNamePaging, $this->request->params['paging'], $cacheConfig);
            } else {
                $paging = Cache::read($cacheNamePaging, $cacheConfig);
                $this->request->params['paging'] = $paging;
            }
        } else {
            $nodes = $this->paginate($Node->alias);
        }
        $this->set(compact('nodes'));
    }