Get images from gallery in taxonomy - php

Question

There seems to be several answers to similar questions but I have not yet found one working for me.
I have a custom post-type called entertainement. entertainement has a taxonomy called ent_categories.
One of the ent_categories is called Event
Each Event has a gallery and I am trying to make a query that will return the latest 10 images that has been added to any of the CPT entertainment with the category Event.
Im hoping to receive a list of urls in an array.
From what I read here something like this should do the trick:
$arg = array(
'post_status' => 'inherit',
'posts_per_page' => -1,
'post_type' => 'attachment',
);
$arg['tax_query'] = array(
array(
'taxonomy' => 'ent_categories',
'field' => 'name',
'terms' => array( 'Event' ),
),
);
$the_query = new WP_Query( $arg );
var_dump($the_query);
The var_dump($the_query); displays a lot of things but no images?
Any tips on this one?
Thank you
EDIT:
I just saw that I can do this:
function pw_show_gallery_image_urls( $content ) {
global $post;
// Only do this on singular items
if( ! is_singular() )
return $content;
// Make sure the post has a gallery in it
if( ! has_shortcode( $post->post_content, 'gallery' ) )
return $content;
// Retrieve all galleries of this post
$galleries = get_post_galleries_images( $post );
$image_list = '<ul>';
// Loop through all galleries found
foreach( $galleries as $gallery ) {
// Loop through each image in each gallery
foreach( $gallery as $image ) {
$image_list .= '<li>' . $image . '</li>';
}
}
$image_list .= '</ul>';
// Append our image list to the content of our post
$content .= $image_list;
return $content;
}
add_filter( 'the_content', 'pw_show_gallery_image_urls' );
This result in that all the gallery images urls get displayed below the images in the gallery.
Maybe this function could be called from a page instead than from functions.php?

Answer 1

You were on the right track, but you're querying for posts of type attachment with a term of the ent_categories taxonomy which only applies to entertainement posts, so there won't be any of them as you'll see if you:
var_dump($the_query->posts);
If you dump all $the_query you'll see lots of things because it's a WP_Query object.
You need to query your entertainement posts: (Be careful because you have a typo in your slug!)
$arg = array(
'posts_per_page' => -1,
'post_type' => 'entertainement',
);
$arg['tax_query'] = array(
array(
'taxonomy' => 'ent_categories',
'field' => 'name',
'terms' => 'Event',
),
);
$the_query = new WP_Query( $arg );
Then you can iterate the posts and get the gallery items like this:
if ( $the_query->have_posts() ) {
while ( $the_query->have_posts() ) {
$the_query->the_post();
if (get_post_gallery()) :
echo get_post_gallery();
print_r(get_post_gallery_images());
endif;
}
/* Restore original Post Data */
wp_reset_postdata();
}
get_post_gallery_images() will get you an array of the URL's of gallery images
get_post_gallery() will get you actual HTML to print the gallery.