我跟踪了the instructions 用于向WooCommerce注册表中添加额外字段，字段将显示并成功将值添加到数据库中。

但是，我无法验证新表单字段，因为woocommerce_register_post 行动似乎不起作用。

我试着用add_filter(\'woocommerce_registration_errors\',… 和add_filter(\'registration_errors\',… 也一样，但似乎没有人开火。

有人有什么见解吗？

这是WP 4.2.4和WC 2.4.3。

参考代码如下：

class Registration
{
    public function __construct()
    {
        $this->actions();
    }

    public function actions()
    {
        add_action(\'show_user_profile\', [$this, \'admin_customer_code\']);
        add_action(\'edit_user_profile\', [$this, \'admin_customer_code\']);

        add_action(\'personal_options_update\', [$this, \'save_admin_customer_code\']);
        add_action(\'edit_user_profile_update\', [$this, \'save_admin_customer_code\']);

        add_action(\'woocommerce_register_form_start\', [$this, \'registration_form\']);
        add_action(\'woocommerce_register_post\', [$this, \'registration_errors\'], 10, 3);
        add_action(\'woocommerce_created_customer\', [$this, \'user_register\']);

        //add_filter(\'registration_errors\', [$this, \'registration_errors\'], 10, 3);
        //add_filter(\'woocommerce_registration_errors\', [$this, \'registration_errors\'], 10, 3);
    }

    public function admin_customer_code($user)
    {
        $customercode = esc_attr(get_the_author_meta(\'customer_code\', $user->ID));

        $r = \'<h3>Customer Code</h3>

            <table class="form-table">
            <tr>
                <th><label for="customer_code">Customer Code</label></th>
                <td>
                    <input type="text" name="customer_code" id="customer_code" value="\' . $customercode . \'">
                </td>
            </tr>
        </table>\';

        echo $r;
    }

    public function save_admin_customer_code($user_id)
    {
        update_user_meta($user_id, \'customer_code\', sanitize_text_field($_POST[\'customer_code\']));
    }

    ////////////////////////////////////////////////////////////////////////////

    public function registration_form()
    {
        $customercode = (! empty($_POST[\'customer_code\'])) ? trim($_POST[\'customer_code\']) : \'\';

        $r = \'<p class="form-row form-row-wide">
            <label for="customer_code">\' . __(\'Customer Code\', \'textdomain\') . \' <span class="required">*</span></label>
            <input type="text" name="customer_code" id="customer_code" class="input" value="\' . esc_attr(wp_unslash($customercode)) . \'" size="25" />
        </p>\';

        echo $r;
    }

    public function registration_errors($username, $email, $validation_errors)
    {
echo "registration_errors";
var_dump($_POST);
exit(); // Never happens :(
        if (empty($_POST[\'customer_code\']) || ! empty($_POST[\'customer_code\']) && trim($_POST[\'customer_code\']) == \'\') {
            $validation_errors->add(\'customer_code_error\', __(\'<strong>Error</strong>: Please provide your customer code.\', \'textdomain\'));
        }

        return $validation_errors;
    }

    public function user_register($user_id)
    {
        if (! empty($_POST[\'customer_code\'])) {
            update_user_meta($user_id, \'customer_code\', trim($_POST[\'customer_code\']));
        }
    }
}