在 WooCommerce 挂钩中访问客户自定义用户元数据

Question

这个问题与user_register hook有关

我需要在 woocommerce 的用户注册表单上添加一些额外的字段 我用Custom User Registration Fields - WooCommerce plugin

我的问题是如何使用 add_action 钩子访问这些添加字段的值？

这是我到目前为止所做的，

add_action( 'user_register', 'new_contact', 10, 3 );

function new_contact( $user_id ) {

    if ( isset( $_POST['first_name'] ) )
        update_user_meta($user_id, 'first_name', $_POST['first_name']);
    $customer = new WC_Customer( $user_id );
    echo $customer;
    
    wp_die();
    

}

以下是回显的输出：

{
"id":12,
"date_created":{"date":"2020-07-27 16:58:52.000000","timezone_type":1,"timezone":"+00:00"},
"date_modified":null,
"email":"c@hotmail.com",
"first_name":""
,"last_name":"",
"display_name":"c",
"role":"customer",
"username":"c",
"billing":{"first_name":"","last_name":"","company":"","address_1":"","address_2":"","city":"","postcode":"","country":"","state":"","email":"","phone":""},
"shipping":{"first_name":"","last_name":"","company":"","address_1":"","address_2":"","city":"","postcode":"","country":"","state":""},
"is_paying_customer":false,
"meta_data":[
    {"id":516,"key":"afreg_additional_1564","value":"c"},
    {"id":517,"key":"afreg_additional_1565","value":"c"},
    {"id":518,"key":"afreg_additional_1566","value":"c"},
    {"id":519,"key":"afreg_additional_1555","value":"c"},
    {"id":520,"key":"afreg_additional_1556","value":"c"},
    {"id":521,"key":"afreg_additional_1557","value":"c"},
    {"id":522,"key":"afreg_additional_1558","value":"California"},
    {"id":523,"key":"afreg_additional_1559","value":"c"},
    {"id":524,"key":"afreg_additional_1560","value":"6181001010"},
    {"id":525,"key":"afreg_additional_1561","value":"c"},
    {"id":526,"key":"_yoast_wpseo_profile_updated","value":"1595894332"}
    ]
}

我可以看到我添加的自定义字段存储在“meta_data”中

如何将每个值存储在变量中？

Answer 1

您可以在WC_Customer 对象上使用WC_Data methods 访问此meta data，例如：

• get_meta_data() 获取未受保护的 WC_Meta_Data 对象数组
• get_meta($meta_key)从特定元键中获取值

要访问来自WC_Meta_Data 对象的数据，您将使用get_data() method。

所以这是代码的工作示例：

$user_id  = 12; // For user ID 12

// Get an instance of the WC_Customer Object from user Id
$customer = new WC_Customer( $user_id );

// Get the meta value from a specific meta key
$meta_value = $customer->get_meta('afreg_additional_1558');
echo 'Value: ' . $meta_value . '<br>'; //Display the value

// Get an unprotected array of `WC_Meta_Data` objects
$user_meta_data = $customer->get_meta_data();

// Loop through `WC_Meta_Data` objects
foreach( $customer->get_meta_data() as $meta_data ){
    // get an unprotected array of the current WC_Meta_Data object data
    $meta_data_array = $meta_data->get_data();
    
    $meta_key   = $meta_data_array['key']; // The meta key
    $meta_value = $meta_data_array['value']; // The meta value
    $meta_value = is_array($meta_value) ? implode(' | ', $meta_value) : $meta_value;
    
    // Testing output
    echo $meta_key  . ': ' . $meta_value . '<br>';
}

所以在你的函数中：

add_action( 'user_register', 'new_contact', 10, 3 );
function new_contact( $user_id ) {

    if ( isset( $_POST['first_name'] ) )
        update_user_meta($user_id, 'first_name', $_POST['first_name']);

    // Get an instance of the WC_Customer Object from user Id
    $customer = new WC_Customer( $user_id );
    
    // Get the meta value from a specific meta key
    $meta_value = $customer->get_meta('afreg_additional_1558');
    echo 'Value: ' . $meta_value . '<br>'; //Display the value
    
    // Get an unprotected array of `WC_Meta_Data` objects
    $user_meta_data = $customer->get_meta_data();
    
    // Loop through `WC_Meta_Data` objects
    foreach( $customer->get_meta_data() as $meta_data ){
        // get an unprotected array of the current WC_Meta_Data object data
        $meta_data_array = $meta_data->get_data();
        
        $meta_key   = $meta_data_array['key']; // The meta key
        $meta_value = $meta_data_array['value']; // The meta value
        $meta_value = is_array($meta_value) ? implode(' | ', $meta_value) : $meta_value;
        
        // Testing output
        echo $meta_key  . ': ' . $meta_value . '<br>';
    }
   
    // echo $customer;
    
    wp_die();
}

或者您可以使用get_user_meta() function 的Wordpress 方式来获取所有用户元数据的数组：

add_action( 'user_register', 'new_contact', 10, 3 );
function new_contact( $user_id ) {

    if ( isset( $_POST['first_name'] ) )
        update_user_meta($user_id, 'first_name', $_POST['first_name']);

    // Get an instance of the WP_User Object from user Id
    $user = new WP_User( $user_id );
    
    // Get the meta value from a specific meta key
    $meta_value = $user->afreg_additional_1558;
    echo 'Value: ' . $meta_value . '<br>'; //Display the value

    // OR using 
    $meta_value = get_user_meta( $user_id, 'afreg_additional_1560', true );
    echo 'Value: ' . $meta_value . '<br>'; //Display the value
    
    // Get an array of all user meta data
    $user_meta_data = get_user_meta( $user_id );
    
    // Testing output meta data
    print_r( $user_meta_data );
    
    wp_die();
}

要为您的相关用户元数据获取正确的元键，您还可以查看wp_usermeta 数据库表。

最后，正如您现在所看到的，将每个值存储在一个变量中很容易，但是您的第三方插件并没有使事情变得简单和明确，因为每个 meta_key 都是一种内部 id。