How to create a simple slideshow out of a post image gallery?

1 comment

1. Yes, you can use any slider jquery plugin you wish, but to feed the slideshow you need the photos.

   Galleries in WordPress are composed of posts with post_type attachment, and attachments that are attached to a post have that posts ID as their post_parent. So to get the images for the slideshow or slider, you need to find posts, that are of post_type attachment, and are children of the current post.

   This article has more information on attachments:

   http://digwp.com/2009/08/awesome-image-attachment-recipes-for-wordpress/

   If you browse to the bottom of the article there is code to grab all the attachments attached to the current post:

   $args = array(
       'order'          => 'ASC',
       'post_type'      => 'attachment',
       'post_parent'    => $post->ID,
       'post_mime_type' => 'image',
       'post_status'    => null,
       'numberposts'    => -1,
   );
   $attachments = get_posts($args);
   if ($attachments) {
       foreach ($attachments as $attachment) {
           echo apply_filters('the_title', $attachment->post_title);
           echo wp_get_attachment_link($attachment->ID, 'thumbnail', false, false);
       }
   }
   

   This can be used as a basis for generating the markup for the slideshow/slider by modifying the html in the post loop.

   This question deals with using nivoslider and image attachments:

   Loop through child images of a parent for a Nivo Slider

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