[wp-trac] [WordPress Trac] #57106: Allowing comment form error pages

[WordPress Trac]

#57106: Allowing comment form error pages
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 Reporter:  apermo        |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Comments      |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Current status quo:

 As of now, it is not possible to have customized a customized validation
 for forms (covered in #57105 )

 And every single error will either end in a wp_die() or an exit.

 Proposal:

 Instead of always ending in `wp_die()` we could forward to the referer
 page, including the error_message and the $_POST data, to prefill the form
 (especially with the comment, since these would be really painful if
 lost).

 `comment_form()` would require an enhancement to show errors.

 This idea is still in progress, I'll provide a working proof of concept
 later, but I wanted to open this for discussion.

 Note: Will also need some kind of representation for the Rest API.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57106>
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