Show the KIA Subtitle on WooCommerce products.

kia-subtitles-for-woocommerce

<?php
/*
 * Plugin Name: KIA Subtitle + WooCommerce Bridge
 * Plugin URI: https://gist.github.com/helgatheviking/ffbf9d1c82351fb9220ff91ce61f7518
 * Donate link: https://www.youcaring.com/wnt-residency
 * Description: Show the KIA Subtitle on WooCommerce products.
 * Version: 1.0.0
 * Author: Kathy Darling
 * Author URI: http://kathyisawesome.com
 * Requires at least: 3.8
 * Tested up to: 4.7.3
 * WC requires at least: 3.0.0    
 *
 * Copyright: © 2017 Kathy Darling.
 * License: GNU General Public License v3.0
 * License URI: http://www.gnu.org/licenses/gpl-3.0.html
 *
 */

// Single product
function kia_add_subtitle_to_single_product(){
	if( function_exists( 'the_subtitle' ) ) the_subtitle( '<h2 class="subtitle">', '</h2>' );
}
add_action( 'woocommerce_single_product_summary', 'kia_add_subtitle_to_single_product', 7 );

// loop product
function kia_add_subtitle_to_loop_product(){
	if( function_exists( 'the_subtitle' ) ) the_subtitle( '<h4 class="subtitle">', '</h4>' );
}
add_action( 'woocommerce_shop_loop_item_title', 'kia_add_subtitle_to_loop_product', 20 );

// shop loop page
function kia_add_subtitle_to_shop() {
	if( function_exists( 'the_subtitle' ) && function_exists( 'is_shop' ) && is_shop() ) {
		the_subtitle( '<h2 class="subtitle">', '</h2>' );
	}
}
add_action( 'woocommerce_archive_description', 'kia_add_subtitle_to_shop' );

// cart product
function kia_add_subtitle_to_cart_product( $title, $cart_item ){
    if( function_exists( 'get_the_subtitle' ) && ( $subtitle = get_the_subtitle( $cart_item['product_id'] ) ) ) {
    	$title .= '<br/><span class="subtitle">' . $subtitle . '</span>';
    }
    return $title;
}
add_filter( 'woocommerce_cart_item_name', 'kia_add_subtitle_to_cart_product', 10, 2 );

// order product
function kia_add_subtitle_to_order_product( $title, $order_item, $is_visible = true ){
    if( $is_visible && function_exists( 'get_the_subtitle' ) && ( $subtitle = get_the_subtitle( $order_item['product_id'] ) ) ) {
    	$title .= '<br/><span class="subtitle">' . $subtitle . '</span>';
    }
    return $title;
}
add_filter( 'woocommerce_order_item_name', 'kia_add_subtitle_to_order_product', 10, 3 );


// email product
function kia_add_subtitle_to_email_product( $items, $order ){
	if( function_exists( 'get_the_subtitle' ) ) {
	    foreach( $items as $item_id => $item ){
	    	if( isset ( $item['product_id'] ) && ( $subtitle = get_the_subtitle( $item['product_id'] ) ) != '' ){
	    		$items[ $item_id ]['name'] = $item['name'] . ': ' . $subtitle;
	    	}
	    }
	}
    return $items;
}
add_filter( 'woocommerce_order_get_items', 'kia_add_subtitle_to_email_product', 10, 3 );

Thanks Kathy! :)