Tengo campos de pago personalizadosfavorite_color que los usuarios pueden completar durante el pago(no requerido), similar a otros campos de pago predeterminados ...

En la sección Mi cuenta en "Editar cuenta", me gustaría agregarfavorite_color campo personalizado para permitir al cliente editar este valor de campo.

Para eso he editado la plantillamyaccount/form-edit-account.php copiando y editando una línea de código original en él:

    <p class="woocommerce-form-row woocommerce-form-row--first form-row form-row-first">
    <label for="account_first_name"><?php _e( 'First name', 'woocommerce' ); ?> <span class="required">*</span></label>
    <input type="text" class="woocommerce-Input woocommerce-Input--text input-text" name="account_first_name" id="account_first_name" value="<?php echo esc_attr( $user->first_name ); ?>" />
</p>

Reemplacé elcuenta_primer_nombre con micolor favorito e incluso el campo muestra el valor guardado en el campo (gracias a$user->favorite_color)

Pero lo malo es que no se guarda.

¿Qué código debo agregar para que esto funcione y se guarde?

El código de plantilla original es:

<?php
/**
 * Edit account form
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/myaccount/form-edit-account.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see     https://docs.woocommerce.com/document/template-structure/
 * @author  WooThemes
 * @package WooCommerce/Templates
 * @version 2.6.0
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

do_action( 'woocommerce_before_edit_account_form' ); ?>

<form class="woocommerce-EditAccountForm edit-account" action="" method="post">

    <?php do_action( 'woocommerce_edit_account_form_start' ); ?>

    <p class="woocommerce-form-row woocommerce-form-row--first form-row form-row-first">
        <label for="account_first_name"><?php _e( 'First name', 'woocommerce' ); ?> <span class="required">*</span></label>
        <input type="text" class="woocommerce-Input woocommerce-Input--text input-text" name="account_first_name" id="account_first_name" value="<?php echo esc_attr( $user->first_name ); ?>" />
    </p>
    <p class="woocommerce-form-row woocommerce-form-row--last form-row form-row-last">
        <label for="account_last_name"><?php _e( 'Last name', 'woocommerce' ); ?> <span class="required">*</span></label>
        <input type="text" class="woocommerce-Input woocommerce-Input--text input-text" name="account_last_name" id="account_last_name" value="<?php echo esc_attr( $user->last_name ); ?>" />
    </p>
    <div class="clear"></div>

    <p class="woocommerce-form-row woocommerce-form-row--wide form-row form-row-wide">
        <label for="account_email"><?php _e( 'Email address', 'woocommerce' ); ?> <span class="required">*</span></label>
        <input type="email" class="woocommerce-Input woocommerce-Input--email input-text" name="account_email" id="account_email" value="<?php echo esc_attr( $user->user_email ); ?>" />
    </p>

    <fieldset>
        <legend><?php _e( 'Password change', 'woocommerce' ); ?></legend>

        <p class="woocommerce-form-row woocommerce-form-row--wide form-row form-row-wide">
            <label for="password_current"><?php _e( 'Current password (leave blank to leave unchanged)', 'woocommerce' ); ?></label>
            <input type="password" class="woocommerce-Input woocommerce-Input--password input-text" name="password_current" id="password_current" />
        </p>
        <p class="woocommerce-form-row woocommerce-form-row--wide form-row form-row-wide">
            <label for="password_1"><?php _e( 'New password (leave blank to leave unchanged)', 'woocommerce' ); ?></label>
            <input type="password" class="woocommerce-Input woocommerce-Input--password input-text" name="password_1" id="password_1" />
        </p>
        <p class="woocommerce-form-row woocommerce-form-row--wide form-row form-row-wide">
            <label for="password_2"><?php _e( 'Confirm new password', 'woocommerce' ); ?></label>
            <input type="password" class="woocommerce-Input woocommerce-Input--password input-text" name="password_2" id="password_2" />
        </p>
    </fieldset>
    <div class="clear"></div>

    <?php do_action( 'woocommerce_edit_account_form' ); ?>

    <p>
        <?php wp_nonce_field( 'save_account_details' ); ?>
        <input type="submit" class="woocommerce-Button button" name="save_account_details" value="<?php esc_attr_e( 'Save changes', 'woocommerce' ); ?>" />
        <input type="hidden" name="action" value="save_account_details" />
    </p>

    <?php do_action( 'woocommerce_edit_account_form_end' ); ?>
</form>

<?php do_action( 'woocommerce_after_edit_account_form' ); ?>