[wp-trac] [WordPress Trac] #51782: Required in REST API register_rest_route args should check for empty string

[WordPress Trac]

#51782: Required in REST API register_rest_route args should check for empty string
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 Reporter:  khr2003       |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  REST API      |    Version:  5.5.3
 Severity:  normal        |   Keywords:  needs-patch
  Focuses:  rest-api      |
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 When setting `required` key to `true` in `register_rest_route` it will
 only check for the existence of the key but not if value is empty.

 I think the expectation is to check for both that the key is set with a
 value (that is not empty) has been set.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51782>
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