字母字符仅用于 WooCommerce 中的账单和运输名称

Question

如何在 WooCommerce 结账时限制在账单名字、账单姓氏、发货名字和发货姓氏中仅包含字母字符？

我正在我的子主题的 functions.php 文件中尝试以下操作，这导致我在 WooCommerce 中结帐时不显示结帐部分。请指教。

add_filter('woocommerce_checkout_fields', 'custom_override_checkout_fields');

function custom_override_checkout_fields($fields) {
    $fields['billing']['billing_first_name'] = array(
        'label' => __('First name', 'woocommerce'),
        'placeholder' => _x('First name', 'placeholder', 'woocommerce'),
        'required' => false,
        'clear' => false,
        'type' => 'text',
        'class' => array(
            'alpha'
        )
    );
}

Answer 1

You can do this by validating checkout form submit at server side by using woocommerce_checkout_process hook, and PHP ctype_alpha() function.

代码如下：

add_action('woocommerce_checkout_process', 'wh_alphaCheckCheckoutFields');

function wh_alphaCheckCheckoutFields() {
    $billing_first_name = filter_input(INPUT_POST, 'billing_first_name');
    $billing_last_name = filter_input(INPUT_POST, 'billing_last_name');
    $shipping_first_name = filter_input(INPUT_POST, 'shipping_first_name');
    $shipping_last_name = filter_input(INPUT_POST, 'shipping_last_name');
    $ship_to_different_address = filter_input(INPUT_POST, 'ship_to_different_address');

    if (empty(trim($billing_first_name)) || !ctype_alpha($billing_first_name)) {
        wc_add_notice(__('Only alphabets are alowed in <strong>Billing First Name</strong>.'), 'error');
    }
    if (empty(trim($billing_last_name)) || !ctype_alpha($billing_last_name)) {
        wc_add_notice(__('Only alphabets are alowed in <strong>Billing Last Name</strong>.'), 'error');
    }
    // Check if Ship to a different address is set, if it's set then validate shipping fields.
    if (!empty($ship_to_different_address)) {
        if (empty(trim($shipping_first_name)) || !ctype_alpha($shipping_first_name)) {
            wc_add_notice(__('Only alphabets are alowed in <strong>Shipping First Name</strong>.'), 'error');
        }
        if (empty(trim($shipping_last_name)) || !ctype_alpha($shipping_last_name)) {
            wc_add_notice(__('Only alphabets are alowed in <strong>Shipping Last Name</strong>.'), 'error');
        }
    }
}

代码进入您的活动子主题（或主题）的 functions.php 文件。或者在任何插件 PHP 文件中。
代码已经过测试并且可以工作。

希望对您有所帮助！

字母字符仅用于 WooCommerce 中的账单和运输名称

Alphabet characters only for billing and shipping names in WooCommerce

php

wordpress

validation

woocommerce

checkout