[wp-trac] [WordPress Trac] #18712: Database upgrade script can kill POST requests

[WordPress Trac]

#18712: Database upgrade script can kill POST requests
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 Reporter:  dd32            |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  3.3
Component:  Administration  |    Version:
 Severity:  normal          |   Keywords:
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 If a site upgrade is done whilst a user is active, a database upgrade may
 be triggered on a POST request.

 The result of this is that the POST data is lost, and the user may be
 redirected to a page without any query vars (as they were POST vars, not
 GET).

 Since the Database upgrades are upgrades which are generally not necessary
 to be performed at that exact instant, we can avoid running the upgrade on
 POST requests with data (such as the Save Draft action), and let the
 following GET have the honours (as most POST requests will perform a
 redirect to a GET afterwards).

 Related: #7965 - Database upgrade complete message should be an admin
 notice

 As reported by Matt

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Ticket URL: <http://core.trac.wordpress.org/ticket/18712>
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