OpenCart: Добавляем сортировку по производителю в каталоге товаров

Примечание: сортировка не по имени, а по ID производителей: нам этого сейчас хватает.

Чтобы сделать именно по названию, нужно ещё изменение.

Изменяемые файлы:

catalog/controller/product/category.php

'value' => 'p.model-DESC',
 				'href'  => $this->url->link('product/category', 'path=' . $this->request->get['path'] . '&sort=p.model&order=DESC' . $url)
 			);
+
+			$this->data['sorts'][] = array(
+				'text'  => $this->language->get('text_manufacturer_asc'),
+				'value' => 'p.manufacturer_id-ASC',
+				'href'  => $this->url->link('product/category', 'path=' . $this->request->get['path'] . '&sort=p.manufacturer_id&order=ASC' . $url)
+			);
+
+			$this->data['sorts'][] = array(
+				'text'  => $this->language->get('text_manufacturer_desc'),
+				'value' => 'p.manufacturer_id-DESC',
+				'href'  => $this->url->link('product/category', 'path=' . $this->request->get['path'] . '&sort=p.manufacturer_id&order=DESC' . $url)
+			);
+
 			
 			$url = '';

catalog/language/russian/product/category.php

$_['text_rating_desc']  = 'Рейтинг (начиная с высокого)';
 $_['text_model_asc']    = 'Модель (А- Я)';
 $_['text_model_desc']   = 'Модель (Я - А)';
+$_['text_manufacturer_asc']    = 'Производитель (А- Я)';
+$_['text_manufacturer_desc']   = 'Производитель (Я - А)';
 $_['text_limit']        = 'Показать:';

catalog/model/catalog/product.php

if (!$product_data) {
			//$sql = "SELECT p.product_id, (SELECT AVG(rating) AS total FROM " . DB_PREFIX . "review r1 WHERE r1.product_id = p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id)"; 
			//$sql = "SELECT p.product_id, p.manufacturer_id, (SELECT AVG(rating) AS total FROM " . DB_PREFIX . "review r1 WHERE r1.product_id = p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "'";
			$sql = "SELECT p.product_id, p.manufacturer_id, (SELECT AVG(rating) AS total FROM " . DB_PREFIX . "review r1 WHERE r1.product_id = p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id)";
			
			
			if (!empty($data['filter_tag'])) {
				$sql .= " LEFT JOIN " . DB_PREFIX . "product_tag pt ON (p.product_id = pt.product_id)";			
			}

'p.price',
 				'rating',
 				'p.sort_order',
-				'p.date_added'
+				'p.date_added',
+				'p.manufacturer_id'
 			);	
 			
 			if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {