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}
// Add the field to the checkout
add_action( 'woocommerce_before_order_notes', 'birth_day_checkout_field' );
function birth_day_checkout_field( $checkout ) { // if customer is logged in and his birth date is defined
if(!empty(get_user_meta( get_current_user_id(), 'account_birth_date', true ))){
$checkout_birht_date = esc_attr(get_user_meta( get_current_user_id(), 'account_birth_date', true ));
}
// The customer is not logged in or his birth date is NOT defined
else {
$checkout_birht_date = $checkout->get_value( 'birth_date' );
} echo '
'; } // Process the checkout
add_action('woocommerce_checkout_process', 'birth_day_checkout_field_process');
function birth_day_checkout_field_process() {
// Check if set, if its not set add an error.
if ( ! $_POST['birth_date'] )
wc_add_notice( __( 'Please enter your date of birth.', 'theme_domain_slug' ), 'error' );
} // update order meta with field value
add_action( 'woocommerce_checkout_update_order_meta', 'birth_day_checkout_field_update_order_meta' );
function birth_day_checkout_field_update_order_meta( $order_id ) {
if (!empty( $_POST['birth_date'])){
update_post_meta( $order_id, 'birth_date', sanitize_text_field( $_POST['birth_date'] ) ); // updating user meta (for customer my account edit details page post data)
update_user_meta( get_post_meta( $order_id, '_customer_user', true ), 'account_birth_date', sanitize_text_field($_POST['birth_date']) );
}
} // update user meta with Birth date (in checkout and my account edit details pages)
add_action ( 'personal_options_update', 'birth_day_save_extra_profile_fields' );
add_action ( 'edit_user_profile_update', 'birth_day_save_extra_profile_fields' );
add_action( 'woocommerce_save_account_details', 'birth_day_save_extra_profile_fields' );
function birth_day_save_extra_profile_fields( $user_id )
{
// for checkout page post data
if ( isset($_POST['birth_date']) ) {
update_user_meta( $user_id, 'account_birth_date', sanitize_text_field($_POST['birth_date']) );
}
// for customer my account edit details page post data
if ( isset($_POST['account_birth_date']) ) {
update_user_meta( $user_id, 'account_birth_date', sanitize_text_field($_POST['account_birth_date']) );
}
} // Display field value on the order edit page
add_action( 'woocommerce_admin_order_data_after_billing_address', 'birth_day_checkout_field_display_admin_order_meta', 10, 1 );
add_action ( 'show_user_profile', 'birth_day_checkout_field_display_admin_order_meta' );
add_action ( 'edit_user_profile', 'birth_day_checkout_field_display_admin_order_meta' );
function birth_day_checkout_field_display_admin_order_meta($order){
echo '
English