用於opencart的MySQL和PHP產品過濾

Question

我正在嘗試爲opencart進行動態產品過濾，其中用戶可以添加過濾器，將它們分配給類別併爲產品分配過濾器值。

目前，我有這些MySQL表：

1. 過濾器 - ID名稱
2. Filters_categories - ID過濾器_id CATEGORY_ID
3. Filters_values - ID過濾器_id值
4. Filters_products - ID過濾器_id VALUE_ID PRODUCT_ID

問題是這種結構，我不能獲得產品時，超過o ne過濾器被激活，因爲我得到MySQL查詢，看起來像這樣：

SELECT product_id FROM Filters_products WHERE ((name_id='1' OR name_id='2') AND filter_id='1') AND ((name_id='3' OR name_id='4') AND filter_id='2') 

而且它沒有任何意義。我無法弄清楚我應該如何改變我的數據庫結構以使動態過濾成爲可能。我怎樣才能解決這種情況？ 謝謝。

Answer 1

SELECT PRODUCT_ID FROM Filters_products WHERE（screen_id = '1' OR screen_id = '2'）和（CONNECTION_ID = '1'）

Answer 2

使用此真棒擴展，

http://www.opencart.com/index.php?route=extension/extension/info&extension_id=10098

希望這幫助。

Answer 3

in /catalog/model/catalog/product.php find line nr。 91並代替「if {}」擋住這個代碼...

if (!empty($data['filter_category_id'])) { 
     if (!empty($data['filter_sub_category'])) { 
      $sql .= " AND cp.path_id = '" . (int)$data['filter_category_id'] . "'"; 
     } else { 
      $sql .= " AND p2c.category_id = '" . (int)$data['filter_category_id'] . "'";    
     } 

     if (!empty($data['filter_filter'])) { 
      $implode = array(); 

      $filters = explode(',', $data['filter_filter']); 

      foreach ($filters as $filter_id) { 

       $filterSQL = $this->db->query("SELECT * FROM " . DB_PREFIX . "filter WHERE filter_id = ". $filter_id); 

       $implode[$filterSQL->row['filter_group_id']][] = (int)$filter_id; 

      } 

      foreach($implode AS $implode2) { 

       $sql .= " AND ("; 
        foreach($implode2 AS $filterID) { 
         $sql .= "(SELECT count(*) FROM product_filter WHERE product_filter.product_id=p.product_id AND product_filter.filter_id=$filterID) OR "; 
        } 
        $sql = substr($sql, 0, -4); 
       $sql .= ")"; 
      } 

     } 
    }