[wp-trac] [WordPress Trac] #61796: Blank Page When $_GET['postId'] Does Not Exist in /wp-admin/site-editor.php

[WordPress Trac]

#61796: Blank Page When $_GET['postId'] Does Not Exist in /wp-admin/site-editor.php
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 Reporter:  benniledl                            |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  new
 Priority:  normal                               |   Milestone:  6.8
Component:  Editor                               |     Version:  6.6
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch changes-requested          |     Focuses:
  gutenberg-merge                                |
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Comment (by Mamaduka):

 It seems that we're discussing two potential UIs that can be displayed for
 a user here, but I'm not exactly sure which one this ticket is trying to
 solve.

 Missing item UI paths:

 1. The site editor has a `postType` query argument, which isn't a
 registered post and displays a `wp_die` message. Example URL: `wp-admin
 /site-editor.php?postType=missing`
 2. The site editor has query arguments for an entity (`postType` and
 `postId`), but the entity is missing from the DB. The following message is
 displayed in the editor canvas: "You attempted to edit an item that
 doesn't exist. Perhaps it was deleted?"


 Possible solutions:

 1. We could move the condition into `_wp_get_site_editor_redirection_url`
 and do a more graceful redirect instead of `wp_die`.
 2. This is a legitimate error/warning. The editor can't render content if
 it doesn't exist. Maybe we can add an action to the warning to take the
 user to the Dashboard or something similar.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/61796#comment:26>
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