[wp-trac] [WordPress Trac] #21189: We should improve the nonce failure page

[WordPress Trac]

#21189: We should improve the nonce failure page
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 Reporter:  dd32            |      Owner:
     Type:  enhancement     |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Administration  |    Version:
 Severity:  normal          |   Keywords:  ux-feedback
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 Currently when a admin nonce expires, in most cases we catch this
 condition using `check_admin_referer()` which presents expired nonces with
 a rather ugly uninformative error message:
 [[Image(http://f.cl.ly/items/26271g453h2y0K393Y1l/Screen%20Shot%202012-07-06%20at%2012.14.25%20PM.png)]]

 I'd like to propose that we make this page a bit nicer to end users - who
 although are unlikely to hit it (I hope) it'd be nice to let them know
 what's actually happened.

 My initial approach would be to change the page to
 - Include a !WordPress logo, and a link back to the Admin area
 - Change the message to something like "The link you've followed has now
 expired, In order to complete the action you were performing, please
 return to the previous page, refresh it, and attempt to follow the link
 again.".
 - In the case where this is happening within the !WordPress admin, it
 would make sense to have some kind of UI on the page as well - This can
 currently be done by not using `check_admin_referer()` and using
 `wp_verify_nonce()` directly and redirecting to an error page.

 The current message could often cause confusion, as of course the user
 wants to do it (They just followed a link!) but as there's no continue
 button, they're left confused.

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Ticket URL: <http://core.trac.wordpress.org/ticket/21189>
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