以下功能将检查客户是否已经购买了产品,如果是,添加到购物车按钮将被“关于”页面的自定义“查看数字产品”链接按钮取代。
第一个功能代码由wc_customer_bought_product()
源代码,以更轻松的方式。该代码将仅检查已登录的用户,对于未登录的用户返回 false。
function has_bought_item( $product_id ) {
global $wpdb;
if( ! is_user_logged_in() )
return false;
$customer_id = get_current_user_id();
$statuses = array_map( 'esc_sql', wc_get_is_paid_statuses() );
// Count the number of products
$count_query = $wpdb->get_var( "
SELECT COUNT(woim.meta_value) FROM {$wpdb->prefix}posts AS p
INNER JOIN {$wpdb->prefix}postmeta AS pm ON p.ID = pm.post_id
INNER JOIN {$wpdb->prefix}woocommerce_order_items AS woi ON p.ID = woi.order_id
INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS woim ON woi.order_item_id = woim.order_item_id
WHERE p.post_status IN ( 'wc-" . implode( "','wc-", $statuses ) . "' )
AND pm.meta_key = '_customer_user' AND pm.meta_value = $customer_id
AND woim.meta_key IN ( '_product_id', '_variation_id' )
AND woim.meta_value = $product_id
" );
// Return true boolean value if count is higher than 0, if not false
return $count_query > 0 ? true : false;
}
// Shop and archives - Replace add to cart ajax button to a custom linked button
add_filter( 'woocommerce_loop_add_to_cart_link', 'replace_loop_add_to_cart', 20, 2 );
function replace_loop_add_to_cart( $html, $product ) {
if( has_bought_item( $product->get_id() ) ) {
$page = get_page_by_title( "About" );
if ( ! is_object($page) )
return $html;
$link = get_permalink( $page->ID );
$text = __("See Digital Product", "woocommerce");
$html = '<a href="' . $link . '" class="button alt add_to_cart_button">' . $text . '</a>';
}
return $html;
}
// Single products: Replacing the button add to cart by a custom button on single product pages
add_action( 'woocommerce_single_product_summary', 'replace_single_add_to_cart_button', 1 );
function replace_single_add_to_cart_button() {
global $product;
if( has_bought_item( $product->get_id() ) && get_page_by_title( "About" ) ) {
// For variable product types (keeping attribute select fields)
if( $product->is_type( 'variable' ) ) {
remove_action( 'woocommerce_single_variation', 'woocommerce_single_variation_add_to_cart_button', 20 );
add_action( 'woocommerce_single_product_summary', 'custom_single_add_to_cart_button', 20 );
}
// For all other product types
else {
remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30 );
add_action( 'woocommerce_single_product_summary', 'custom_single_add_to_cart_button', 30 );
}
}
}
// Utility function: displays a custom button replacement
function custom_single_add_to_cart_button() {
$page = get_page_by_title( "About" );
if ( ! is_object($page) )
return;
$link = get_permalink( $page->ID );
$text = __("See Digital Product", "woocommerce");
echo '<a href="' . $link . '" class="button alt add_to_cart_button">' . $text . '</a>';
}
代码位于活动子主题(或活动主题)的 function.php 文件中。经过测试并有效。
基于:
- 检查客户是否已经在 WooCommerce 中购买了商品
- 检查客户是否在 WooCommerce 中购买了特定产品