[wp-trac] [WordPress Trac] #51817: WP-Admin - Optimize main wpquery with 'fields' => 'ids' causes notice

[WordPress Trac]

#51817: WP-Admin - Optimize main wpquery with 'fields' => 'ids' causes notice
-----------------------------------------+-----------------------------
 Reporter:  eumene                       |      Owner:  (none)
     Type:  enhancement                  |     Status:  new
 Priority:  normal                       |  Milestone:  Awaiting Review
Component:  Administration               |    Version:  5.5.3
 Severity:  normal                       |   Keywords:
  Focuses:  administration, performance  |
-----------------------------------------+-----------------------------
 Hi all

 I have a post_type (Woocommerce product) with a lot of data in the post
 contents. So, in wp-admin, WP requires a lot of memory to list them
 (sometimes I got an OUT-OF-MEMORY)

 So, I tried to make a lighter query adding via hooks the query params
 'fields' => 'ids'

 It works! The query is more fast and WP does not require so many memory
 but I got some annoying notices

 In method _display_rows in WP_Posts_List_Table you have

 {{{
 foreach ( $posts as $a_post ) {
  $post_ids[] = $a_post->ID;
 }
 }}}

 The method supposes that $posts will be an array of WP_Post object .
 In my case it is an array of integer

 Can you handle this scenario?

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Ticket URL: <https://core.trac.wordpress.org/ticket/51817>
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