Template tag functions rely on global variables to access the post being processed and retrieve data from it or related to it. The main variable among these is $post, which holds the post object itself. In your example it’s not explicit, but what is happening is that your loop assigns data to $post. If its … Read more
In looking at the WP_Tax_Query class in /wp-includes/taxonomy.php, I found that there is a ‘include_children’ option which defaults to true. I modified my original get_posts() call with the following, and it works great: $pages = get_posts(array( ‘post_type’ => ‘page’, ‘numberposts’ => -1, ‘tax_query’ => array( array( ‘taxonomy’ => ‘taxonomy-name’, ‘field’ => ‘term_id’, ‘terms’ => 1, … Read more
You can use get_posts() as it takes the same arguments as WP_Query. To pass it the IDs, use ‘post__in’ => array(43,23,65) (only takes arrays). Something like: $args = array( ‘post__in’ => array(43,23,65) ); $posts = get_posts($args); foreach ($posts as $p) : //post! endforeach; I’d also set the post_type and posts_per_page just for good measure.
Your tax query is incorrect, field should be the field you want to query on: term_id, name, or slug – $posts_array = get_posts( array( ‘posts_per_page’ => -1, ‘post_type’ => ‘fabric_building’, ‘tax_query’ => array( array( ‘taxonomy’ => ‘fabric_building_types’, ‘field’ => ‘term_id’, ‘terms’ => $cat->term_id, ) ) ) );
You are right to say: Never use query_posts anymore pre_get_posts pre_get_posts is a filter, for altering any query. It is most often used to alter only the ‘main query’: add_action(‘pre_get_posts’,’wpse50761_alter_query’); function wpse50761_alter_query($query){ if( $query->is_main_query() ){ //Do something to main query } } (I would also check that is_admin() returns false – though this may be … Read more
query_posts() is overly simplistic and a problematic way to modify the main query of a page by replacing it with new instance of the query. It is inefficient (re-runs SQL queries) and will outright fail in some circumstances (especially often when dealing with posts pagination). Any modern WP code should use more reliable methods, like … Read more