所有 WooCommerce 结帐字段的自定义占位符

Question

我正在尝试在我的 WooCommerce 结帐字段中添加一个占位符，它对 除了电话和电子邮件 字段之外的每个字段都非常有效。

这是我正在使用的代码：

add_filter('woocommerce_default_address_fields', 'override_address_fields');
function override_address_fields( $address_fields ) {
    $address_fields['first_name']['placeholder'] = 'Fornavn';
    $address_fields['last_name']['placeholder'] = 'Efternavn';
    $address_fields['address_1']['placeholder'] = 'Adresse';
    $address_fields['state']['placeholder'] = 'Stat';
    $address_fields['postcode']['placeholder'] = 'Postnummer';
    $address_fields['city']['placeholder'] = 'By';
    $address_fields['phone']['placeholder'] = 'Telefon';
    $address_fields['email']['placeholder'] = 'Email';
    return $address_fields;
}

我哪里错了？为什么电话和电子邮件没有任何结果？

我使用浏览器开发工具检查器从这两个字段中获取了 ID。

---

编辑：

我也试过这个建议的代码：

add_filter('woocommerce_checkout_fields', 'override_checkout_fields');
function override_checkout_fields( $checkout_fields ) {
    $checkout_fields['first_name']['placeholder'] = 'Fornavn';
    $checkout_fields['last_name']['placeholder'] = 'Efternavn';
    $checkout_fields['address_1']['placeholder'] = 'Adresse';
    $checkout_fields['state']['placeholder'] = 'Stat';
    $checkout_fields['postcode']['placeholder'] = 'Postnummer';
    $checkout_fields['city']['placeholder'] = 'By';
    $checkout_fields['phone']['placeholder'] = 'Telefon';
    $checkout_fields['email']['placeholder'] = 'Email';
    return $checkout_fields;
}

还有这个：

add_filter('woocommerce_checkout_fields', 'override_checkout_fields');
function override_checkout_fields( $checkout_fields ) {
    $checkout_fields['billing_first_name']['placeholder'] = 'Fornavn';
    $checkout_fields['billing_last_name']['placeholder'] = 'Efternavn';
    $checkout_fields['billing_address_1']['placeholder'] = 'Adresse';
    $checkout_fields['billing_state']['placeholder'] = 'Stat';
    $checkout_fields['billing_postcode']['placeholder'] = 'Postnummer';
    $checkout_fields['billing_city']['placeholder'] = 'By';
    $checkout_fields['billing_phone']['placeholder'] = 'Telefon';
    $checkout_fields['billing_email']['placeholder'] = 'Email';
    return $checkout_fields;
}

但它不起作用。

Answer 1

查看official docs，您会看到没有使用woocommerce_default_address_fields过滤器时默认地址的'phone'和'email'关键字段钩。
接受的字段键是：
country、first_name、last_name、company、address_1、address_2、city、state、postcode。

这就是您可以使用 woocommerce_default_address_fields

进行更改的原因

电子邮件和电话是 计费 字段，它们可通过 woocommerce_checkout_fields 过滤器挂钩使用。它们被命名为（参见文档）'billing_phone' 和 'billing_phone'...

覆盖它们的正确方法是：

add_filter( 'woocommerce_checkout_fields' , 'override_billing_checkout_fields', 20, 1 );
function override_billing_checkout_fields( $fields ) {
    $fields['billing']['billing_phone']['placeholder'] = 'Telefon';
    $fields['billing']['billing_email']['placeholder'] = 'Email';
    return $fields;
}

对于其他字段（账单和运输）：

add_filter('woocommerce_default_address_fields', 'override_default_address_checkout_fields', 20, 1);
function override_default_address_checkout_fields( $address_fields ) {
    $address_fields['first_name']['placeholder'] = 'Fornavn';
    $address_fields['last_name']['placeholder'] = 'Efternavn';
    $address_fields['address_1']['placeholder'] = 'Adresse';
    $address_fields['state']['placeholder'] = 'Stat';
    $address_fields['postcode']['placeholder'] = 'Postnummer';
    $address_fields['city']['placeholder'] = 'By';
    return $address_fields;
}

代码进入您的活动子主题（或主题）的 function.php 文件或任何插件文件中。

所有代码都在 Woocommerce 3+ 上进行了测试并且可以运行。

---

参考：Customizing checkout fields using actions and filters

---

对于登录表单字段：Customize WooCommerce login form user fields

Answer 2

根据官方文档https://docs.woocommerce.com/document/tutorial-customising-checkout-fields-using-actions-and-filters/ 这里有更新的代码：

 add_filter( 'woocommerce_checkout_fields' , 'override_billing_checkout_fields', 20, 1 );
 function override_billing_checkout_fields( $fields ) {

     $fields['billing']['billing_first_name']['placeholder'] = 'Prénom';
     $fields['billing']['billing_last_name']['placeholder'] = 'Nom';
     $fields['billing']['billing_company']['placeholder'] = 'Nom de la société (optionnel)';
     $fields['billing']['billing_postcode']['placeholder'] = 'Code postal';
     $fields['billing']['billing_phone']['placeholder'] = 'Téléphone';
     $fields['billing']['billing_city']['placeholder'] = 'Ville';


     $fields['shipping']['shipping_first_name']['placeholder'] = 'Prénom';
     $fields['shipping']['shipping_last_name']['placeholder'] = 'Nom';
     $fields['shipping']['shipping_company']['placeholder'] = 'Nom de la société (optionnel)';
     $fields['shipping']['shipping_postcode']['placeholder'] = 'Code postal';
     $fields['shipping']['shipping_phone']['placeholder'] = 'Téléphone';
     $fields['shipping']['shipping_city']['placeholder'] = 'Ville';

     return $fields;
 }

结果：

Answer 3

查看WooCommerce documentation，您可能想尝试使用woocommerce_checkout_fields 过滤器而不是woocommerce_default_address_fields

似乎更合乎逻辑，因为上面的字段并不全都与地址相关，并且该挂钩源自class-wc-countries.php。

另外，请注意字段名称根据页面的上下文而有所不同，例如，帐单页面字段的命名如下：

• billing_first_name
• billing_last_name
• billing_email
• billing_phone

希望对您有所帮助！祝你好运。