Sounds like this is something that’s theme related, because WP doesn’t do any auto inserting of thumbnails. what kind of thumbnails are you talking about? The gallery shortcode ones, or ones that have been inserted via the media manager?
the thumbnails that are generated from images placed in articles, then used on the main page article summaries.
I grab them using
dp_attachment_image($post->ID, 'thumbnail', 'alt="' . $post->post_title . '"');
which calls
function dp_attachment_image($postid=0, $size='thumbnail', $attributes='') {
if ($postid<1) $postid = get_the_ID();
if ($images = get_children(array(
'post_parent' => $postid,
'post_type' => 'attachment',
'numberposts' => 1,
'post_mime_type' => 'image',)))
foreach($images as $image) {
$attachment=wp_get_attachment_image_src($image->ID, $size); ?>
<img src="<?php echo $attachment[0]; ?>" <?php echo $attributes; ?> />
<?php
}
}
I found a workaround.
if you add this code to your functions.php:
if ( function_exists( 'add_theme_support' ) ) {
add_theme_support( 'post-thumbnails' );
set_post_thumbnail_size( 80, 80, true );
}
it creates a menu in the right column of your admin panel for editing posts that lets you select which image to use as the thumbnail. Modify the 80 x 80 to whatever dimensions you prefer.
*whew*
No, I spoke too soon. Adding that code gives you the *illusion* of being able to set which one you want as the thumbnail.
WordPress still does whatever it bloody well wants, and it’s usually the exact opposite of what you want it to do.
Add two photos? Sometimes it’ll use photo A as the article thumbnail, sometimes photo B. Remove them both and put them back in reverse order? It’ll still choose the photo you DON’T want and make it the thumbnail
It’s like it reads your mind, then decides to screw with you.
Hey Manntis,
your theme function dp_attachment_image fails to state which order to use.
try adding an order by clause to your array
'post_type' => 'attachment',
'numberposts' => 1,
'post_mime_type' => 'image',
'order_by' => 'menu_order',
'order' => 'ASC')
HTH
that appears to have worked! many thanks!
