Wordpress gallery shortag

Question

I'm creating a simple slideshow on the side where i want to show 4 images from a post, i searched around i found this code that simply uses the build in gallery function

<li><?php echo do_shortcode('[gallery id="'.$post->ID.'"]'); ?></li>

the problem is that it spits out the entire gallery... is there noway to limit this to 2,3 ?

i tried to use

http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail

but for some reason, i didnt work... I guess it because all my posts are made of is a gallery of images

all help is appreciated regards

Answer 1

There is no way to limit the gallery query in the shortcode_gallery function. However, you can get the child attachments of a post using the following.

$attachments = get_children( array('post_parent' => $post->id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby, 'numberposts' => 5) );

You will need to iterate through the attachments and build out your gallery HTML.

Answer 2

To exclude an image from the WordPress Gallery you would use something like this:

[gallery link="file"  columns="4" exclude="2092,2091,2068"]

Here's a breakdown of the code above:

gallery link="file"

This links the image to the image file instead of the attachment post. Useful if you plan on using a thickbox or lightbox effect).

columns="4" This controls the images per row.

exclude="2092,2091,2068" This excludes the images that have the id matching the numbers used. There might be other ways to get the number ID for the images, but the way I get them is to go to your Media Browser by clicking on the Medial Link in the left side tool-bar. Next click on an image you want to exclude. You will see it's number ID in the URL of your browser.