[wp-trac] [WordPress Trac] #11205: Behaviour when parent page is trashed is undefined

[WordPress Trac]

#11205: Behaviour when parent page is trashed is undefined
----------------------------+-----------------------------------------------
 Reporter:  sirzooro        |       Owner:             
     Type:  defect (bug)    |      Status:  new        
 Priority:  normal          |   Milestone:  2.9        
Component:  Administration  |     Version:  2.9        
 Severity:  normal          |    Keywords:  needs-patch
----------------------------+-----------------------------------------------
 Create two pages: Parent and Child. Set the former as a parent for the
 latter. Then trash Parent page. When you start editing the Child page, WP
 will display two notices:

 Notice: Undefined offset: 1 in C:\wordpress29.local\wp-includes\post.php
 on line 2603[[BR]]
 Notice: Trying to get property of non-object in C:\wordpress29.local\wp-
 includes\post.php on line 2603

 It should be easy to remove these warnings. But there is another problem:
 when you save Child post, you will lost Parent-Child relation. Keep in
 mind that user may want to untrash the Parent page later.

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Ticket URL: <http://core.trac.wordpress.org/ticket/11205>
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