Opencart按價格或按產品選項篩選產品

Question

我是opencart的新手，我想知道如何修改搜索功能以按選項或價格搜索產品。我有一個適合我的大學的項目，我需要創建這樣一個功能。

你能告訴我怎麼樣？我需要一個例子。

Thanx！

Answer 1

我使用Opencart的1.5.3.1這個例子

您需要修改的getProducts（）函數。搜索查詢看起來像這樣建在：

SELECT p.product_id, (SELECT AVG(rating) AS total FROM review r1 WHERE r1.product_id = 
p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM product p LEFT 
JOIN product_description pd ON (p.product_id = pd.product_id) LEFT JOIN product_to_store 
p2s ON (p.product_id = p2s.product_id) LEFT JOIN product_tag pt ON (p.product_id = 
pt.product_id) WHERE pd.language_id = '1' AND p.status = '1' AND p.date_available <= NOW 
() AND p2s.store_id = '0' AND (LCASE(pd.name) LIKE '%large%' OR LCASE(pt.tag) LIKE 
'%large%' AND pt.language_id = '1') GROUP BY p.product_id ORDER BY p.sort_order ASC, LCASE 
(pd.name) ASC LIMIT 0,15 

您需要的選項值說明添加到查詢以及添加參數WHERE子句：

SELECT p.product_id, (SELECT AVG(rating) AS total FROM review r1 WHERE r1.product_id = 
p.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM product p LEFT 
JOIN product_description pd ON (p.product_id = pd.product_id) LEFT JOIN 
product_to_store p2s ON (p.product_id = p2s.product_id) LEFT JOIN product_option_value 
pov ON (p.product_id = pov.product_id) LEFT JOIN option_value_description ovd ON 
(pov.option_value_id = ovd.option_value_id) LEFT JOIN product_tag pt ON (p.product_id 
= pt.product_id) WHERE pd.language_id = '1' AND p.status = '1' AND p.date_available <= 
NOW() AND p2s.store_id = '0' AND (LCASE(pd.name) LIKE '%large%' OR LCASE(ovd.name) 
LIKE '%large%' OR LCASE(pt.tag) LIKE '%large%' AND pt.language_id = '1') GROUP BY 
p.product_id ORDER BY p.sort_order ASC, LCASE(pd.name) ASC LIMIT 0,15 

要做到這一點，編輯目錄/model/catalog/product.php。查找線路37,38：

 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)"; 

添加後：

  //add option values to search query 
     $sql.= " LEFT JOIN " . DB_PREFIX . "product_option_value pov ON (p.product_id = pov.product_id)"; 
     $sql.= " LEFT JOIN " . DB_PREFIX . "option_value_description ovd ON (pov.option_value_id = ovd.option_value_id)";  
     // - - - - - - - - - - - - - 

查找行70：

$implode[] = "LCASE(pd.name) LIKE '%" . $this->db->escape(utf8_strtolower($word)) . "%'"; 

將其更改爲：

$implode[] = "LCASE(pd.name) LIKE '%" . $this->db->escape(utf8_strtolower($word)) . "%' 
OR LCASE(ovd.name) LIKE '%" . $this->db->escape(utf8_strtolower($word)) . "%'"; 

現在搜索將「請參閱「大」，「紅」等產品選項值名稱。

要搜索的價格是非常容易，只包括在參數的WHERE子句 完全匹配使用：

"pd.price = '" . $this->db->escape(utf8_strtolower($word)) . "' 

的，比方說，價格值達到一定值時，使用：

"pd.price <= '" . $this->db->escape(utf8_strtolower($word)) . "' 

希望，你明白了。

現在，這是一個快速和骯髒的例子只有，打算讓你去。

我不是建議這是最終的解決方案。

您需要考慮添加新的GET變量以控制是否在搜索中包含選項和/或價格。此外，搜索價格範圍，而不是價格。添加變量以控制是否使用AND或OR運算符 - 即查找「紅色」和「XL」或兩者中的任何一個。

祝你好運。