/**
* Add related posts HTML to the content
*
* @param string $content
* @since 2.1
* @return string
*/
function ep_related_posts_filter_content($content)
{
if (is_search() || is_home() || is_archive() || is_category()) {
return $content;
}
$post_id = get_the_ID();
$cache_key = md5('related_posts_' . $post_id);
$related_posts = wp_cache_get($cache_key, 'ep-related-posts');
if (false === $related_posts) {
$related_posts = ep_find_related($post_id);
wp_cache_set($cache_key, $related_posts, 'ep-related-posts', 300);
}
$html = ep_related_get_html($related_posts);
return $content . "\n" . $html;
}
/**
* Test for related post args filter
*/
public function testFindRelatedPostFilter()
{
$post_id = ep_create_and_sync_post(array('post_content' => 'findme test 1'));
ep_create_and_sync_post(array('post_content' => 'findme test 2'));
ep_create_and_sync_post(array('post_content' => 'findme test 3', 'post_type' => 'page'));
ep_refresh_index();
ep_activate_module('related_posts');
EP_Modules::factory()->setup_modules();
add_filter('ep_find_related_args', array($this, 'find_related_posts_filter'), 10, 1);
$related = ep_find_related($post_id);
$this->assertEquals(2, sizeof($related));
remove_filter('ep_find_related_args', array($this, 'find_related_posts_filter'));
$related = ep_find_related($post_id);
$this->assertEquals(3, sizeof($related));
}
