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1. chadrew
   Member
   Posted 8 months ago #

   I've found the following function for excluding pages from search (or to be more precise, showing only posts in search):

   function SearchFilter($query) {
       if ($query->is_search) {
           $query->set('post_type','post');
       }
       return $query;
   }
   
   add_filter('pre_get_posts','SearchFilter');

   It works great, but it also prevents the Media Library search from returning any results. So I thought, maybe I could include attachments as well, like this:

   function SearchFilter($query) {
       if ($query->is_search) {
           $query->set('post_type',array(post,attachment));
       }
       return $query;
   }
   
   add_filter('pre_get_posts','SearchFilter');

   Media Library search now works, but it also returns the following error every time:

   Warning: Illegal offset type in isset or empty in /home/user/public_html/wp-includes/post.php on line 825

   Any way to fix this?

   Here's the line from post.php:

   function get_post_type_object( $post_type ) {
   global $wp_post_types;

   if ( empty($wp_post_types[$post_type]) )
   return null;

   return $wp_post_types[$post_type];
   }

   (I know very little about PHP. I assume I can't use an array for post_type for some reason?)

2. chadrew
   Member
   Posted 8 months ago #

   OK I've searched around and it looks like query can't contain multiple post types, and it's a known issue:

   http://core.trac.wordpress.org/ticket/16949

   However, I was able to fix it by using this:

   function SearchFilter($query) {
       if ($query->is_search && !$query->is_admin) {
           $query->set('post_type','post');
       }
       return $query;
   }
   
   add_filter('pre_get_posts','SearchFilter');

   This way this function doesn't affect the admin panel, so I can use the Media Library search without problems... Yay!

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