[wp-trac] [WordPress Trac] #38984: REST API: Fix incorrect calls to `rest_sanitize_value_from_schema`

[WordPress Trac]

#38984: REST API: Fix incorrect calls to `rest_sanitize_value_from_schema`
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 Reporter:  jnylen0       |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  4.7
Component:  REST API      |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:
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Comment (by rachelbaker):

 @jnylen0 for the username we can't simply use any string value. There are
 invalid characters that need to be stripped. I *think* we would want to
 use the  `sanitize_user()` function for this.

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Ticket URL: <https://core.trac.wordpress.org/ticket/38984#comment:3>
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