Second Custom Post Type Archive

3 comments

1. I had this same issue of needing two archive pages for a custom post type. I was able to accomplish this fairly cleanly using four WP hooks

   For the example my custom post type is “member”. I need a second archive url for members that have a custom meta_key “plus” set to true.

   First we need to define the URL for the second archive url. Notice passing the “plus_member” var in the query string.

   add_filter('rewrite_rules_array', function($rules) {
       return array_merge(array(
           'plus-members/?$' => 'index.php?post_type=member&archive_type=archive&plus_member=1',
           'plus-members/page/([0-9]{1,})/?$' => 'index.php?post_type=member&archive_type=archive&plus_member=1&paged=$matches[1]',
       ), $rules);
   });
   

   Next we need to allow the “plus_member” we are passing along

   add_filter('query_vars', function($vars) {
       $vars[] = 'plus_member';
       return $vars;
   });
   

   Next we need to tell WP to use a different template file for this request instead of the default “archive-member.php”

   add_filter('template_include', function($template) {
       global $wp_query;
       if ($wp_query->get('post_type') == 'member' && $wp_query->get('plus_member')) {
           $template = locate_template('archive-plus-member.php');
       }
   
       return $template;
   });
   

   Finally we need to alter the main query so we are not showing all members but only plus members.

   add_filter('pre_get_posts', function($query) {
       if ($query->is_main_query() && $query->is_archive() && $query->get('post_type') == 'business') {
           if ($query->get('plus_member')) {
               $query->set('meta_key', 'plus');
               $query->set('meta_value', true);
           }
       }
   
       return $query;
   });
   

   This should produce the result:

   /members/ (loads) archive-member.php (showing) all members

   /plus-members/ (loads) archive-plus-member.php (showing) all members where meta_key plus == true

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2. I would use a query parameter, something like ?time=future maybe, to shift your query. The difference between the future posts query and the past posts query should just be the orderby and the meta_query, so it should be relatively easy to change that based on the URL parameter. You also have the added benefit of reducing overhead by keeping it to one page. My only concern with this would be linking in the menu, as you’d have to use custom links, and those are less flexible.

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3. This is what I went with. It creates a second archive for past events. It shows upcoming events in the main event archive, and old events in the past events page. Sorting is ascending for the main archive (so you see the next upcoming event first), and descending for the past events page, so you see the most recent event first. It allows for paging on the past events page. Note that is does not modify the query in the admin system.

   new My_Events_Are_Special;
   class My_Events_Are_Special {
   
       function __construct() {
           add_filter('rewrite_rules_array', array($this, 'insert_rewrite_rules'));
           add_filter('query_vars', array($this, 'insert_query_vars'));
           add_action('wp_loaded', array($this, 'flush_rules'));
           add_filter('posts_join', array($this, 'posts_join'));
           add_filter('posts_where', array($this, 'posts_where'));
           add_filter('posts_orderby', array($this, 'posts_orderby'));
       }
   
       function can_modify_query() {
           return !is_admin() && is_post_type_archive('event');
       }
   
       // create rules for the archived events page
       var $rewrite_rules = array(
           'events/archive$' => 'index.php?post_type=event&archive_type=archive',
           'events/archive/page/([0-9]+)$' => 'index.php?post_type=event&archive_type=archive&paged=$matches[1]',
       );
   
       // insert rules into rewrite system
       function insert_rewrite_rules($rules) {
           return $this->rewrite_rules + $rules;
       }
   
       // add special query var to system
       function insert_query_vars($vars) {
           array_push($vars, 'archive_type');
           return $vars;
       }
   
       // flush rules if any are new
       function flush_rules() {
           $rules = get_option('rewrite_rules');
           $flush = false;
   
           foreach ($this->rewrite_rules as $rule => $rewrite) {
               if (!isset($rules[$rule])) {
                   global $wp_rewrite;
                   $wp_rewrite->flush_rules();
                   break;
               }
           }
       }
   
       // add start and end type to query for events (not in admin)
       function posts_join($join) {
           global $wpdb;
           if ($this->can_modify_query()) {
               $join .= " JOIN $wpdb->postmeta starts on ($wpdb->posts.ID = starts.post_id AND starts.meta_key = '_starts') ";
               $join .= " JOIN $wpdb->postmeta ends on ($wpdb->posts.ID = ends.post_id AND ends.meta_key = '_ends') ";
           }
           return $join;
       }
   
       // only show future events for the main archive, only past events for the "archive archive"
       function posts_where($where) {
           global $wpdb;
           if ($this->can_modify_query()) {
               $compare = get_query_var('archive_type') == 'archive' ? '<' : '>';
               $where .= " AND ends.meta_value $compare ".time();
           }
           return $where;
       }
   
       // main archive is ordered ascending on event start date, "archive archive" is ordered descending
       function posts_orderby($orderby) {
           global $wpdb;
           if ($this->can_modify_query()) {
               $order = get_query_var('archive_type') == 'archive' ? 'DESC' : 'ASC';
               $orderby = "starts.meta_value $order, $wpdb->posts.post_date $order";
           }
           return $orderby;
       }
   }
   

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