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I am building a blog where the posts of a certain category make up image galleries (using the standard WP functionality and a modified single.php to display the gallery.)

Now, I would like to add links to some of those galleries inside other blog posts. The ideal way would be a shortcode like

[thumbnails galleryid=209]

(or whatever) that displays a definable number of thumbnails from post no. 209, and links there.

Does anybody know of a ready-made plugin that does this?

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up vote 1 down vote accepted

I don't think so, but you could use get_children and get the attachment(s) of those posts:

$attachments = get_children(array(
  'post_parent'     => $post->ID, // <- source post
  'post_status'     => 'inherit',
  'post_type'       => 'attachment',
  'post_mime_type'  => 'image',
  'order'           => 'post_date',
  'orderby'         => 'DESC',
  'numberposts'     => 5,         // the number

Then get the image URLs:

$size = 'post-thumbnail'; // or whatever size you need

foreach($attachments as $att){
  list($source, $width, $height) = wp_get_attachment_image_src($att->ID, $size); 
  // echo '<img src="'.$source.'" width="'.$width.'" height='".$height."' />';
share|improve this answer
Brilliant, thank you! This worked, and in conjunction with a custom short tag does exactly what I need. – Pekka 웃 Sep 18 '11 at 14:59

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