Question

我正在尝试在类别页面中添加按畅销产品排序。为此，我在catalog/controller/product/category.php控制器中添加了以下代码：

$this->data['sorts'][] = array(
    'text'  => 'Bestsellers',
    'value' => 'bestsellers',
    'href'  => $this->url->link('product/category', 'path=' . $this->request->get['path'] . '&sort=bestsellers&order=DESC' . $url)
);

添加此内容后，我可以在排序列表中看到畅销书选项。现在我正在尝试进行数据库查询以完成此排序。我试图克隆现有的排序，如按名称排序（A-z），但因为我是opencart的新手，我无法做到这一点。

请您分享您的想法如何做到这一点？

Answer 1

我将引导你，查询部分取决于你......

同时修改catalog/model/catalog/product.php - 方法getProducts($data)。检查这部分：

$sort_data = array(
    'pd.name',
    'p.model',
    'p.quantity',
    'p.price',
    'rating',
    'p.sort_order',
    'p.date_added'
);

并添加您的新排序，例如bestsellers，所以你最终得到这个数组：

$sort_data = array(
    'pd.name',
    'p.model',
    'p.quantity',
    'p.price',
    'rating',
    'p.sort_order',
    'p.date_added',
    'bestsellers',
);

现在您必须编辑以if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {开头的下一部分，以便您最终得到：

if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
    if ($data['sort'] == 'pd.name' || $data['sort'] == 'p.model') {
        $sql .= " ORDER BY LCASE(" . $data['sort'] . ")";
    } elseif ($data['sort'] == 'p.price') {
        $sql .= " ORDER BY (CASE WHEN special IS NOT NULL THEN special WHEN discount IS NOT NULL THEN discount ELSE p.price END)";
    } elseif ($data['sort'] == 'bestsellers') { // <-- YOUR NEW SORTING
        $sql .= " ORDER BY <ADD YOUR SORTING QUERY HERE>";
    } else {
        $sql .= " ORDER BY " . $data['sort'];
    }
} else {
    $sql .= " ORDER BY p.sort_order";   
}

添加正确的查询后，而不是<ADD YOUR SORTING QUERY HERE>您应该完成。

Answer 2

我做了2次更改并测试了代码以便正常运行：

1) remove the (,) in 'bestsellers',
2) updated the sql code to read: 
    $sql .= " ORDER BY (SELECT sum(quantity) FROM " . DB_PREFIX . "order_product op where op.product_id=p.product_id GROUP BY p.product_id) ";

这里是catalog / model / catalog / product.php的代码：

    $sort_data = array(
        'pd.name',
        'p.model',
        'p.quantity',
        'p.price',
        'rating',
        'p.sort_order',
        'p.date_added',
        'bestsellers'
    );  

    if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
        if ($data['sort'] == 'pd.name' || $data['sort'] == 'p.model') {
            $sql .= " ORDER BY LCASE(" . $data['sort'] . ")";
        } else if ($data['sort'] == 'p.price') {
            $sql .= " ORDER BY (CASE WHEN special IS NOT NULL THEN special WHEN discount IS NOT NULL THEN discount ELSE p.price END)";
        } else if ($data['sort'] == 'bestsellers') { // Sorting as suggested by shadyyx
            $sql .= " ORDER BY (SELECT sum(quantity) FROM " . DB_PREFIX . "order_product op where op.product_id=p.product_id GROUP BY p.product_id) ";
        } else {
            $sql .= " ORDER BY " . $data['sort'];
        }
    } else {
        $sql .= " ORDER BY p.sort_order";   
    }

和catalog \ controller \ product \ product.php的代码：

 $data = array(
        'filter_category_id'   => $categories_info['category_id'],
        'sort'                 => 'bestsellers',
        'order'                => 'DESC'
        );
    $results = $this->model_catalog_product->getProducts($data);

Opencart按畅销产品排序

2 个答案: