"undefined" text displayed on products with WooCommerce Add On fields

I too have this issue.
Enfold 4.5
WooCommerce 3.5.1

Is there a fix?

Same issue here. Fresh install, fresh plugins, but adding to cart is “undefined”

I have same problem, what is status on this? :)

We faced the same issue here.

The problem is about compatibility between Enfold with Woocommerce Bookings and Woocommerce Add-ons.

The fix is exactly as Ismael said. Use the class ‘product_title’ on the heading. To do that, edit the following function on functions-enfold.php to add the ‘product_title’ class to the ‘heading_html’ variable on the ‘defaults array’. All the rest of the function can remain the same:

//advanced title + breadcrumb function
### HOOKED ON HEADING: added product_title class
if(!function_exists('avia_title'))
{
	function avia_title($args = false, $id = false)
	{
		global $avia_config;

		if(!$id) $id = avia_get_the_id();
		
		$header_settings = avia_header_setting();
		if($header_settings['header_title_bar'] == 'hidden_title_bar') return "";
		
		$defaults 	 = array(

			'title' 		=> get_the_title($id),
			'subtitle' 		=> "", //avia_post_meta($id, 'subtitle'),
			'link'			=> get_permalink($id),
			'html'			=> "<div class='{class} title_container'><div class='container'>{heading_html}{additions}</div></div>",
			'heading_html'	=> "<{heading} class='main-title entry-title product_title'>{title}</{heading}>",
			'class'			=> 'stretch_full container_wrap alternate_color '.avia_is_dark_bg('alternate_color', true),
			'breadcrumb'	=> true,
			'additions'		=> "",
			'heading'		=> 'h1' //headings are set based on this article: http://yoast.com/blog-headings-structure/
		);

		if ( is_tax() || is_category() || is_tag() )
		{
			global $wp_query;

			$term = $wp_query->get_queried_object();
			$defaults['link'] = get_term_link( $term );
		}
		else if(is_archive())
		{
			$defaults['link'] = "";
		}
		
		
		// Parse incomming $args into an array and merge it with $defaults
		$args = wp_parse_args( $args, $defaults );
		$args = apply_filters('avf_title_args', $args, $id);

		//disable breadcrumb if requested
		if($header_settings['header_title_bar'] == 'title_bar') $args['breadcrumb'] = false;
		
		//disable title if requested
		if($header_settings['header_title_bar'] == 'breadcrumbs_only') $args['title'] = '';

		// OPTIONAL: Declare each item in $args as its own variable i.e. $type, $before.
		extract( $args, EXTR_SKIP );

		if(empty($title)) $class .= " empty_title ";
        $markup = avia_markup_helper(array('context' => 'avia_title','echo'=>false));
		if(!empty($link) && !empty($title)) $title = "<a href='".$link."' rel='bookmark'>".$title."</a>";
		if(!empty($subtitle)) $additions .= "<div class='title_meta meta-color'>".wpautop($subtitle)."</div>";
		if($breadcrumb) $additions .= avia_breadcrumbs(array('separator' => '/', 'richsnippet' => true));

		if(!$title) $heading_html = "";
		$html = str_replace('{heading_html}', $heading_html, $html);
		
		
		$html = str_replace('{class}', $class, $html);
		$html = str_replace('{title}', $title, $html);
		$html = str_replace('{additions}', $additions, $html);
		$html = str_replace('{heading}', $heading, $html);

		if(!empty($avia_config['slide_output']) && !avia_is_dynamic_template($id) && !avia_is_overview())
		{
			$avia_config['small_title'] = $title;
		}
		else
		{
			return $html;
		}
	}
}

• This reply was modified 5 years, 9 months ago by rmf339.

Hello

We are having he same issue here seeing “undefined” on the product page after adding the “Product Add-Ons” to WooCommerce with the advanced layout builder in Enfold 4.5.3 in WordPress 5.0.3.

We have tried editing functions-enfold.php using @rmf339‘s solution from January 29, 2019 at 6:06 am without success, including the line that @Ismael pointed out on January 31, 2019 at 1:07 pm that @JaapdeWit clarified as being the same on January 31, 2019 at 1:22 pm.

Anything further to be done?

Thanks!