问题描述
最初我为我的英语感到抱歉。
有一项任务是根据促销的可用性(特殊产品)过滤类别中的产品。我找到了一个合适的模块-“按可用性过滤产品”,并试图使其适应当前任务。
在模型中,代替:
$sql .= " AND (p.stock_status_id = '6' OR p.quantity > 0)";
我写了
$sql .= " AND (ps.product_id = '*')";
但是发生错误,即查询结果中没有这样的表(
因此,在模型中我添加:
"LEFT
JOIN " . DB_PREFIX . "product_special ps
ON (p.product_id = ps.product_id)"
即代替这个
$sql .= " LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE pd.language_id = '" . (int)$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') . "'";
我们得到
$sql .= " LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN " . DB_PREFIX . "product_special ps ON (p.product_id = ps.product_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "'";
但是我仍然收到错误:
Fatal error: Uncaught Exception: Error: Unknown column 'ps.product_id' in 'where clause'<br />Error No: 1054<br />SELECT p.product_id,(SELECT AVG(rating) AS total FROM oc_review r1 WHERE r1.product_id = p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating,(SELECT price FROM oc_product_discount pd2 WHERE pd2.product_id = p.product_id AND pd2.customer_group_id = '1' AND pd2.quantity = '1' AND ((pd2.date_start = '0000-00-00' OR pd2.date_start < NOW()) AND (pd2.date_end = '0000-00-00' OR pd2.date_end > NOW())) ORDER BY pd2.priority ASC,pd2.price ASC LIMIT 1) AS discount,(SELECT price FROM oc_product_special ps WHERE ps.product_id = p.product_id AND ps.customer_group_id = '1' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ORDER BY ps.priority ASC,ps.price ASC LIMIT 1) AS special FROM oc_product_to_category p2c LEFT JOIN oc_product p ON (p2c.product_id = p.product_id) LEFT JOIN oc_product_description pd ON (p.product_id = pd.product_id) LE in /opt/lampp/htdocs/oc3_tst/system/library/db/mysqli.php on line 40
但是在这种情况下,错误文本中已经存在“ oc_product_special”表...
已经变态了,
if (!empty($data['filter_instock'])) {
$results = $this->model_catalog_product->getProductSpecials();
if ($results) {
foreach ($results as $result) {
$sql .= " AND (p.product_id = '" . $result['product_id'] . "')";
}
}
}
仅在只有一项的情况下显示特殊项目)
请告诉我我做错了什么?也许我在错误的位置插入了JOIN?还是使用控制器更容易做到这一点?
这是文件中我适合opencart 3的模块(最初是第二版)
https://drive.google.com/file/d/1mLlmZuB76hoBVbyk3RmxnJJaRFXN34s1/view?usp=sharing
解决方法
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