I have a custom post type that has a one to many relationship with another custom post type. Call them
topics. Currently, I get
$args = array( 'meta_key' => 'lesson_id', 'meta_value' => $post['post']->ID, 'post_type' => 'plugin-topic', 'post_status' => 'published', 'posts_per_page' => -1 ); $les_topics = get_posts($args);
However, when the
$lesson object is created by wordpress for first time, I would like to add $topics to it so that I can reference as $lesson->topics.
Can someone tell me the appropriate filter or action to use to accomplish that? I saw this
which suggests I shouldn't even do what I am asking to do but it isn't clear why this would be a bad thing.