[wp-trac] [WordPress Trac] #42764: Template Hierarchy does not work with multiple post types

[WordPress Trac]

#42764: Template Hierarchy does not work with multiple post types
--------------------------+-----------------------------
 Reporter:  nbdamian      |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Themes        |    Version:  4.9.1
 Severity:  normal        |   Keywords:
  Focuses:  template      |
--------------------------+-----------------------------
 Inside the "pre_get_posts" action, If you set the post_type argument to
 multiple, I.E:
 {{{#!php
 <?php
 add_action( 'pre_get_posts', function($query) {
   if (!is_admin() && $query->is_main_query() && !$query->is_search() &&
 is_post_type_archive('event')):
     $query->set('post_type', array( 'event', 'product' ) );
   endif;
 }
 }}}

 This will force the templating hierarchy to use "archive.php" instead of
 either "archive-event.php" or "archive-product.php"

 Currently, I am working around this issue using:
 {{{#!php
 <?php
 add_filter( "archive_template_hierarchy", function($templates) {
         $post_types = get_query_var('post_type');
         if (count($post_types) > 1 && count($templates) == 1):
                 foreach ($post_types AS $post_type):
                         array_unshift($templates,
 "archive-".$post_type.".php");
                 endforeach;
         endif;
         return $templates;
 }, 10, 1 );
 }}}

 Unsure if this is a bug, or intended. Either way, it would be useful to
 support this.

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Ticket URL: <https://core.trac.wordpress.org/ticket/42764>
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