我正在尝试向我的 WooCommerce 结帐字段添加一个占位符，它对每个字段都非常有效除了电话和电子邮件字段。

这是我使用的代码:

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？

我已经使用我的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。

最佳答案

查看 official docs ，您会看到在使用 时，没有 'phone' 和 'email' 键字段作为默认地址woocommerce_default_address_fields 过滤器钩子(Hook)。
接受的字段键是:
国家，名字，姓氏，公司，地址_1，地址_2、城市、州、邮政编码。

这就是为什么您可以使用 woocommerce_default_address_fields 进行更改

电子邮件和电话是账单字段，它们可通过woocommerce_checkout_fields 过滤器 Hook 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;
}

代码位于您的事件子主题(或主题)的 function.php 文件中或任何插件文件中。

所有代码都在 Woocommerce 3+ 上测试并且有效。

引用:Customizing checkout fields using actions and filters

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

关于php - 所有 WooCommerce 结帐字段的自定义占位符，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46326620/