我想创建一个WooCommerce插件,为客户添加一些优惠(有购买历史记录)。
我怎样才能检查用户之前买过的东西?
谢谢。
是的,当客户已经至少有一个状态已完成的订单时,可以创建一个返回
true
的条件函数。
以下是此条件函数的代码:
function has_bought() {
// Get all customer orders
$customer_orders = get_posts( array(
'numberposts' => -1,
'meta_key' => '_customer_user',
'meta_value' => get_current_user_id(),
'post_type' => 'shop_order', // WC orders post type
'post_status' => 'wc-completed' // Only orders with status "completed"
) );
// return "true" when customer has already at least one order (false if not)
return count($customer_orders) > 0 ? true : false;
}
此代码经过测试和运行。
此代码位于活动子主题或主题的function.php文件中,或者插入到php文件中。
用法(作为条件):
参考
这是一个更轻,更快的条件函数,如果客户已经购买,则返回true。
有一个可选参数$user_id
,它允许您指定已定义的用户ID:
function has_bought( $user_id = 0 ) {
global $wpdb;
$customer_id = $user_id == 0 ? get_current_user_id() : $user_id;
$paid_order_statuses = array_map( 'esc_sql', wc_get_is_paid_statuses() );
$results = $wpdb->get_col( "
SELECT p.ID FROM {$wpdb->prefix}posts AS p
INNER JOIN {$wpdb->prefix}postmeta AS pm ON p.ID = pm.post_id
WHERE p.post_status IN ( 'wc-" . implode( "','wc-", $paid_order_statuses ) . "' )
AND p.post_type LIKE 'shop_order'
AND pm.meta_key = '_customer_user'
AND pm.meta_value = $customer_id
" );
// Count number of orders and return a boolean value depending if higher than 0
return count( $results ) > 0 ? true : false;
}
代码放在活动子主题(或主题)的function.php文件中,或者放在任何插件文件中。
此代码在Woocommerce 3+上进行测试并且可以工作(它也应该适用于以前的版本)。
对于多种产品:Check if a customer has purchased a specific products in WooCommerce
用法示例1(登录客户)
if( has_bought() )
echo '<p>You have already maid a purchase</p>';
else
echo '<p>Welcome, for your first purchase you will get a discount of 10%</p>';
用法示例2(设置$ user_id)
// Define the user ID
$user_id = 85;
if( has_bought( $user_id ) )
echo '<p>customer have already maid a purchase</p>';
else
echo '<p>Customer with 0 purchases</p>';
如果未定义$user_id
且当前用户未登录,则此函数将返回false
。
此函数的代码部分基于内置的WooCommerce函数
wc_customer_bought_product
源代码。
简化版:
function has_bought() {
// Get all customer orders
$customer_orders = get_posts( array(
'numberposts' => -1,
'meta_key' => '_customer_user',
'meta_value' => get_current_user_id(),
'post_type' => 'shop_order', // WC orders post type
'post_status' => 'wc-completed' // Only orders with status "completed"
) );
// return "true" when customer has already one order
return count( $customer_orders ) > 0 ? true : false;
}
如果启用了Guest Check,则此功能可能会有所帮助
只需发送$ customer_email作为参数,函数将检查该电子邮件的所有订单并返回true或false。
function has_bought($customer_email){
$orders = get_posts(array(
'numberposts' => -1,
'post_type' => 'shop_order',
'post_status' => array('wc-processing', 'wc-completed'),
));
$email_array = array();
foreach($orders as $order) {
$order_obj = wc_get_order($order->ID);
$order_obj_data = $order_obj->get_data();
array_push($email_array, $order_obj_data['billing']['email']);
}
if (in_array($customer_email, $email_array)) {
return true;
} else {
return false;
}
}
带有付费状态或仅具有状态不可知查询的增强版本,也改进了PHP 5.4+的代码输入:
function has_bought(int $user_id = 0, bool $paid = true ) {
global $wpdb;
$user_id = (empty($user_id)) ? get_current_user_id() : $user_id;
$sql_str = "
SELECT p.ID FROM ".$wpdb->posts." AS p
INNER JOIN
".$wpdb->postmeta." AS pm ON p.ID = pm.post_id
WHERE
p.post_type LIKE 'shop_order'
AND pm.meta_key = '_customer_user'
AND pm.meta_value = %d
";
$args = [(int) $user_id];
if ($paid === true) {
$paid_order_statuses = array_map( 'esc_sql', wc_get_is_paid_statuses() );
$sql_str .= "AND p.post_status IN ( 'wc-" . implode( "','wc-", $paid_order_statuses ) . "' )";
}
$sql = $wpdb->prepare($sql_str, $args);
return (bool) $wpdb->get_var( $sql );
}