在类别页面中显示最低的简单产品价格答案

【问题标题】：Show lowest simple product price in category page在类别页面中显示最低的简单产品价格
【发布时间】：2017-05-04 06:50:26
【问题描述】：

我想在content-oroduct_cat.php 页面中显示最低的简单产品价格。来自Fancy Squares 的以下代码用于显示最低价格，但我只想显示简单产品，即省略分组产品。

/* SHOW LOWEST PRICE ON CATEGORY PAGE */
//woocommerce get lowest price in category
function wpq_get_min_price_per_product_cat($term_id)
{    
    global $wpdb;

    $sql = "
    SELECT  MIN( meta_value+0 ) as minprice
    FROM {$wpdb->posts} 
    INNER JOIN {$wpdb->term_relationships} ON ({$wpdb->posts}.ID = {$wpdb->term_relationships}.object_id)
    INNER JOIN {$wpdb->postmeta} ON ({$wpdb->posts}.ID = {$wpdb->postmeta}.post_id) 
    WHERE  
      ( {$wpdb->term_relationships}.term_taxonomy_id IN (%d) ) 
    AND {$wpdb->posts}.post_type = 'product'  
    AND {$wpdb->posts}.post_status = 'publish' 
    AND {$wpdb->postmeta}.meta_key = '_price'
    ";

    return $wpdb->get_var($wpdb->prepare($sql, $term_id));
}

我尝试使用：

AND {$wpdb->posts}.product_type = 'simple'

但这不起作用。我如何只显示简单的产品？

【问题讨论】：

标签： php mysql wordpress woocommerce categories

【解决方案1】：

您的查询无效，因为product_type 未存储在 posts 表它存储在term_taxonomy 表中。要获得希望您必须使用子查询，它将获取所有简单的产品和主查询根据类别对其进行过滤。

我已将您的wpq_get_min_price_per_product_cat() 修改如下

function wh_get_min_price_per_product_cat($term_id)
{
    global $wpdb;

    $sql = "
    SELECT  MIN( meta_value+0 ) as minprice
    FROM {$wpdb->posts} 
    INNER JOIN {$wpdb->term_relationships} ON ({$wpdb->posts}.ID = {$wpdb->term_relationships}.object_id)
    INNER JOIN {$wpdb->postmeta} ON ({$wpdb->posts}.ID = {$wpdb->postmeta}.post_id) 
    WHERE  
      ( {$wpdb->term_relationships}.term_taxonomy_id IN (%d) ) 
        AND {$wpdb->posts}.post_type = 'product' 
        AND {$wpdb->posts}.post_status = 'publish' 
        AND {$wpdb->postmeta}.meta_key = '_price'
        AND {$wpdb->posts}.ID IN (SELECT posts.ID
                FROM {$wpdb->posts} AS posts
                INNER JOIN {$wpdb->term_relationships} AS term_relationships ON posts.ID = term_relationships.object_id
                INNER JOIN {$wpdb->term_taxonomy} AS term_taxonomy ON term_relationships.term_taxonomy_id = term_taxonomy.term_taxonomy_id
                INNER JOIN {$wpdb->terms} AS terms ON term_taxonomy.term_id = terms.term_id
                WHERE term_taxonomy.taxonomy = 'product_type'
                AND terms.slug = 'simple'
                AND posts.post_type = 'product')";
    return $wpdb->get_var($wpdb->prepare($sql, $term_id));
}

代码进入您的活动子主题（或主题）的functions.php 文件中。或者也可以在任何插件 php 文件中。

用法

echo wh_get_min_price_per_product_cat($cat_id);

代码已经过测试并且可以工作。

参考：SQL query to check product_type in WooCommerce

希望这会有所帮助！

【讨论】：