[wp-trac] [WordPress Trac] #21989: update_option() calls sanitize_option() twice when option does not exist

[WordPress Trac]

#21989: update_option() calls sanitize_option() twice when option does not exist
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 Reporter:  MikeSchinkel                         |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  new
 Priority:  normal                               |   Milestone:  Future
                                                 |  Release
Component:  Options, Meta APIs                   |     Version:
 Severity:  normal                               |  Resolution:
 Keywords:  dev-feedback has-patch needs-        |     Focuses:
  testing                                        |  performance
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Comment (by inf3rno):

 I wonder how this wasn't fixed in the past 11 years. I reported something
 similar, maybe a duplicate.
 https://core.trac.wordpress.org/ticket/60595#ticket I spent an hour on it.
 You are playing with developers time...

 I think the main problem here that we have only a single callback for type
 conversion, sanitization, API call, encryption, etc... Sanitization should
 be idempotent in theory, but we have a lot of other features which are not
 idempotent. Either we need a guarantee to call sanitize_callback only once
 or we need other callbacks which are called only once.

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Ticket URL: <https://core.trac.wordpress.org/ticket/21989#comment:37>
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