获取woocommerce类别中的所有产品ID

Question

我试图让使用product_cat这里的全部产品ID是我的代码

function get_products_from_category_by_ID($category) { 

    $products_IDs = new WP_Query(array(
     'post_type' => 'product', 
     'post_status' => 'publish', 
     'fields' => 'ids', 
     'tax_query' => array(
      'relation' => 'AND', 
      array(
       'taxonomy' => 'product_cat', 
       'field' => 'term_id', 
       'terms' => $category, 
      ) 
     ), 

    )); 
return $products_IDs; 
} 

var_dump(get_products_from_category_by_ID(196)); 

但要WP_Query对象，而不是产品的ID，请让我知道什么可能是原因？

参考： - WooCommerce: function that returns all product ID's in a particular category

Answer 1

你应该返回查询的帖子。 Wp_Query将始终返回对象，但将参数fields添加到参数只会更改posts属性。所以你的代码将是：

function get_products_from_category_by_ID($category) { 

    $products = new WP_Query(array(
     'post_type' => 'product', 
     'post_status' => 'publish', 
     'fields'  => 'ids', 
     'tax_query' => array(
      'relation' => 'AND', 
      array(
       'taxonomy' => 'product_cat', 
       'field' => 'term_id', 
       'terms' => $category, 
      ) 
     ), 

    )); 
    return $products->posts; 
}