[wp-trac] [WordPress Trac] #39895: wp_set_object_terms tries to treat object as string

[WordPress Trac]

#39895: wp_set_object_terms tries to treat object as string
--------------------------+-----------------------------
 Reporter:  dracos        |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Taxonomy      |    Version:  4.7.2
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 If I've understood this correctly, in wp_set_object_terms, $old_tt_ids is
 set to a call to wp_get_object_terms(), which returns an array of objects.
 It then runs array_diff on this with $tt_ids, putting the difference in
 $delete_tt_ids, and if there is anything different, it calls implode( "',
 '", $delete_tt_ids ) – which dies because it tries to treat the objects
 inside of $delete_tt_ids as strings, with the error:
     "Object of class stdClass could not be converted to string in .../wp-
 includes/taxonomy.php"

 When I am seeing the error, in a third party plugin, $tt_ids is empty,
 $old_tt_ids is an array of one stdClass Object ( [term_id] => 8, [name] =>
 posttag, [slug] => posttag, [term_group] => 0, [term_taxonomy_id] => 8,
 [taxonomy] => post_tag, [description] => , [parent] => 0, [count] => 10 )
 and so the error occurs.

 Apologies if I've misunderstood something.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/39895>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform