joomla - 列出类别下的产品

Question

我会将产品列出到指定的类别，但它可以正常工作。我认为它在SQL查询中的任何地方都有错误...

$query = "
            SELECT 
                cat.`name_".$language."` AS catname,
                cat.category_id AS category_id, 
                prod.`name_".$language."` AS prodname,
                prod.product_id AS product_id
            FROM 
                `#__jshopping_products` AS prod
            INNER JOIN 
                `#__jshopping_products_to_categories` AS pr_cat 
            ON 
                pr_cat.product_id = prod.product_id
            LEFT JOIN 
                `#__jshopping_categories` AS cat 
            ON 
                pr_cat.category_id = cat.category_id
            WHERE 
                prod.product_publish = '1'
            AND 
                cat.category_publish='1'
            AND 
                pr_cat.product_id = prod.product_id
            ";
$db->setQuery($query);
$row = $db->loadObjectList();
foreach ($row as $value) {
  print_r("Katname: ".$value->catname."<br>Produkte zur Kategorie: ".$value->prodname."<br><br>");
}

sql tables

categories
category_id, name
products
product_id, name
products_to_categories
category_id, product_id

print_r显示：

Katname: Wandbilder
Produkte: Acryl Schild
Katname: Dekoration
Produkte: Pappdisplay
Katname: Wandbilder
Produkte: Pappdisplay
Katname: Dekoration
Produkte: Foto-Tischläufer & Tischdecke
...​

我会打印例如。

Katname: Wandbilder Produkte: Acryl Schild, Pappdisplay, ...
Katname: Dekoration Produkte: Pappdisplay, Foto-Tischläufer & Tischdecke​, ...
....

有人可以帮忙吗？

Answer 1

$query = " SELECT cat.name_".$language." AS catname, cat.category_id AS category_id FROM #__jshopping_categories AS cat

name_".$language."

#__jshopping_categories