[wp-trac] [WordPress Trac] #34825: Impossible to set a default ordering for custom post types (on the admin screen)

[WordPress Trac]

#34825: Impossible to set a default ordering for custom post types (on the admin
screen)
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 Reporter:  stephenharris      |      Owner:
     Type:  defect (bug)       |     Status:  new
 Priority:  normal             |  Milestone:  Awaiting Review
Component:  Posts, Post Types  |    Version:  trunk
 Severity:  normal             |   Keywords:
  Focuses:  administration     |
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 In the patch for #25493, (specifically
 https://core.trac.wordpress.org/changeset/34728), when an `orderby` value
 is not set in `$_GET` it defaults to 'date'. This was corrected for
 hierarchical post types in https://core.trac.wordpress.org/changeset/35482
 after it was noted that date should not be the default ordering for pages.

 However, non-hierarchical custom post types are also having their default
 ordering set to (publication) 'date', and this may not be the natural
 ordering (e.g. events).

 Previously, you could specify a default ordering by checking
 `$query->get('orderby')` and assigning that property a value if it were
 empty. That's no longer possible as it will now return 'date', when no
 orderby has been set.

 We should check the actual post type at this line:
 https://github.com/WordPress/WordPress/blob/fc349932c0d1995603fe3f24953318c4c925390e
 /wp-admin/includes/post.php#L1011 rather than whether its non-hierarchical
 and/or provide a means for a post type to determine its own default
 ordering.

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Ticket URL: <https://core.trac.wordpress.org/ticket/34825>
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