在 mysql 查询中包含批发字段

Question

我正在使用 Opencart 2.2.0。我有两个客户群——默认客户和批发客户。在我的整个网站中，price 字段用于默认组，wholesale 字段用于批发客户组。我还在特价选项卡中添加了wholesale 字段（添加到oc_product_special 表中），一切正常（它记住了管理员中的值，并通过前端两组的特价添加到购物车。）我的唯一的问题是它不能在前端正确显示。这意味着它显示两个客户组的特殊 price 字段的价值，而不是为批发客户显示 wholesale 特价。我发现问题出在哪里 - 在model/catalog/product file 的查询中。我想知道如何更改以下查询，以便我可以包含 wholesale 字段，因为只有这样我才能在前端显示它。我的查询是：

$query = $this->db->query("SELECT DISTINCT *, pd.name AS name, p.image, m.name AS manufacturer, (SELECT price FROM " . DB_PREFIX . "product_discount pd2 WHERE pd2.product_id = p.product_id AND pd2.customer_group_id = '" . (int)$this->config->get('config_customer_group_id') . "' AND pd2.quantity = '1' AND ((pd2.date_start = '0000-00-00' OR pd2.date_start < NOW()) AND (pd2.date_end = '0000-00-00' OR pd2.date_end > NOW())) ORDER BY pd2.priority ASC, pd2.price ASC LIMIT 1) AS discount, **(SELECT price FROM " . DB_PREFIX . "product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '" . (int)$this->config->get('config_customer_group_id') . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC, ps.price ASC LIMIT 1) AS special,** (SELECT points FROM " . DB_PREFIX . "product_reward pr WHERE pr.product_id = p.product_id AND customer_group_id = '" . (int)$this->config->get('config_customer_group_id') . "') AS reward, (SELECT ss.name FROM " . DB_PREFIX . "stock_status ss WHERE ss.stock_status_id = p.stock_status_id AND ss.language_id = '" . (int)$this->config->get('config_language_id') . "') AS stock_status, (SELECT wcd.unit FROM " . DB_PREFIX . "weight_class_description wcd WHERE p.weight_class_id = wcd.weight_class_id AND wcd.language_id = '" . (int)$this->config->get('config_language_id') . "') AS weight_class, (SELECT lcd.unit FROM " . DB_PREFIX . "length_class_description lcd WHERE p.length_class_id = lcd.length_class_id AND lcd.language_id = '" . (int)$this->config->get('config_language_id') . "') AS length_class, (SELECT AVG(rating) AS total FROM " . DB_PREFIX . "review r1 WHERE r1.product_id = p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating, (SELECT COUNT(*) AS total FROM " . DB_PREFIX . "review r2 WHERE r2.product_id = p.product_id AND r2.status = '1' GROUP BY r2.product_id) AS reviews, p.sort_order FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "manufacturer m ON (p.manufacturer_id = m.manufacturer_id) WHERE p.product_id = '" . (int)$product_id . "' AND 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') . "'");

查询的特殊部分是：

(SELECT price FROM " . DB_PREFIX . "product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '" . (int)$this->config->get('config_customer_group_id') . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC, ps.price ASC LIMIT 1) AS special,

感谢

Answer 1

我解决了这个问题...如果有人被困在同一个地方，这就是我所做的：

我在查询中添加了另一行（子查询），我在其中定义了 special_wholesale，如下所示：

SELECT wholesale FROM " . DB_PREFIX . "product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '" . (int)$this->config->get('config_customer_group_id') . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC, ps.wholesale ASC LIMIT 1) AS special_wholesale

以及在catalog/model/catalog/product.php 文件中public function getProduct($product_id) 函数内的'special' 数组元素下面的查询数组中定义'special_wholesale' => $query->row['special_wholesale']。

之后，我在控制器文件中为特色产品（/catalog/controller/module/featured.php）定义了$special_wholesale变量。

我做的最后一件事是在 features.php(/catalog/view/theme/your-theme-name/template/module/featured.tpl) 文件中调用 $product['special_wholesale'];，如下所示：

<font size="2" color="red"> <span class="price-new"><?php echo "VP:" . $product['special_wholesale']; ?></span>&nbsp;<span class="price-old"><?php echo "VP:". $product['wholesale']; ?></span></font></br>

输出为：删除旧批发价并显示特价批发价。

我希望这可以帮助某人。干杯！