Simon Battersby

Dismayed this morning to find that WP e-Commerce does not support multiple images on a product page unless you pay for the “gold cart” option. Since I’m basically stingy, I did it myself. Here’s how:

I replaced this code in wpsc-single_product.php:

   <?php if ( wpsc_the_product_thumbnail() ) : ?>
      <a rel="<?php echo wpsc_the_product_title(); ?>" class="<?php echo wpsc_the_product_image_link_classes(); ?>" href="<?php echo wpsc_the_product_image(); ?>">
         <img class="product_image" id="product_image_<?php echo wpsc_the_product_id(); ?>" alt="<?php echo wpsc_the_product_title(); ?>" title="<?php echo wpsc_the_product_title(); ?>" src="<?php echo wpsc_the_product_thumbnail(get_option('product_image_width'),get_option('product_image_height'),'','single'); ?>"/>
      </a>
      <?php if ( function_exists( 'gold_shpcrt_display_gallery' ) )
         echo gold_shpcrt_display_gallery( wpsc_the_product_id() );
      ?>
   <?php else: ?>

with this code:

   <?php if ( wpsc_the_product_thumbnail()) ://if the product has any images...
      if (has_post_thumbnail()):?>//...display the thumbnail if there is one...
         <a rel="lightbox[<?php echo wpsc_the_product_title(); ?>]" class="<?php echo wpsc_the_product_image_link_classes(); ?>" href="<?php echo wpsc_the_product_image(); ?>">
         <?php echo get_the_post_thumbnail(wpsc_the_product_id(),'thumbnail',array('alt' => wpsc_the_product_title(),'title' => wpsc_the_product_title() ));?>
         </a>
      <?php endif;
      sb_get_images_for_product(wpsc_the_product_id());//...and then display all the rest of the images
else: ?>

I’ve used the standard WP function get_the_post_thumbnail() instead of the WP e-commerce function wpsc_the_product_thumbnail() simply to ensure a consistent display of thumbnails. So, I’m displaying the product thumbnail and then using a custom function sb_get_images_for_product() to retrieve any other images associated with the product. This function effectively replaces the gold_shpcrt_display_gallery() function for which you have to pay. I saved sb_get_images_for_product() in the functions.php (located in the theme folder). This function retrieves all images attached to the post and then displays any which are not the thumbnail – we’ve already displayed that. Here’s the code:

function sb_get_images_for_product($id){
   global $wpdb;
   $post_thumbnail = get_post_thumbnail_id();//read the thumbnail id
   $attachments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE post_parent = $id AND post_type = 'attachment' ORDER BY menu_order ASC"));
   foreach ($attachments as $attachment){
      if ($attachment->ID <> $post_thumbnail){//if we haven't already got the attachment as the post thumbnail
         $image_attributes = wp_get_attachment_image_src($attachment->ID,'thumbnail');?>
	<a rel="lightbox[<?php echo wpsc_the_product_title(); ?>]" href="<?php echo $attachment->guid; ?>" class="<?php echo wpsc_the_product_image_link_classes(); ?>">
	<img src="<?php echo $image_attributes[0]; ?>" alt="<?php echo wpsc_the_product_title(); ?>"/>
	</a>
   <?php }		
   }
}

Note that WP 3.3 changed the way images work and messed up the WP e-commerce product images on version 3.8.7.4, with the result that it's possible to have a product without a product thumbnail. This is fixed with WP e-commerce version 3.8.7.6. Howevere, I've added the if (has_post_thumbnail()) condition in the first code snippet above to trap this. Thanks to Brian for flagging this up.