[wp-trac] [WordPress Trac] #56481: Short-circuit HEAD methods in Core controllers

[WordPress Trac]

#56481: Short-circuit HEAD methods in Core controllers
---------------------------------------------+-----------------------------
 Reporter:  TimothyBlynJacobs                |       Owner:
                                             |  TimothyBlynJacobs
     Type:  task (blessed)                   |      Status:  reopened
 Priority:  normal                           |   Milestone:  6.8
Component:  REST API                         |     Version:  4.7
 Severity:  normal                           |  Resolution:
 Keywords:  has-patch has-unit-tests commit  |     Focuses:  rest-api,
                                             |  performance
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Comment (by TimothyBlynJacobs):

 In [changeset:"59970" 59970]:
 {{{
 #!CommitTicketReference repository="" revision="59970"
 REST API: Fix fatal error when making HEAD requests with _fields filter.

 In [59889] the REST API controllers were adjusted to perform less work
 when responding to HEAD requests. The WP_REST_Response body would now be
 `null`, which caused issues with filters that expected the response body
 to be an array.

 This commit sets the response body to be an empty array when preparing the
 response instead. The body will still be discarded, but this provides
 better backward comppatibility with code that assumes an array will be
 used.

 See #56481.
 Props antonvlasenko, timothyblynjacobs, mamaduka, wildworks.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/56481#comment:61>
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