[wp-trac] [WordPress Trac] #45220: register_rest_field doesn't work

[WordPress Trac]

#45220: register_rest_field doesn't work
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 Reporter:  Dudo                          |       Owner:  (none)
     Type:  defect (bug)                  |      Status:  new
 Priority:  normal                        |   Milestone:  5.0
Component:  REST API                      |     Version:  5.0
 Severity:  normal                        |  Resolution:
 Keywords:  needs-patch needs-unit-tests  |     Focuses:  rest-api
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Changes (by danielbachhuber):

 * keywords:  reporter-feedback => needs-patch needs-unit-tests


Comment:

 I was able to reproduce this issue by registering a custom field like
 follows:

 {{{
 add_action( 'rest_api_init', function() {
         register_rest_field( 'post', 'test_field', array(
                 'get_callback' => function() {
                         return 'test_value';
                 },
                 'schema' => null,
         ) );
 });
 }}}


 In WP 4.9.8, the `test_field` attribute is present for `GET
 http://wptest.test/wp-json/wp/v2/posts/1`. In WP 5.0-beta5-43907, the
 `test_field` attribute is missing.

 Where did it go?!

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Ticket URL: <https://core.trac.wordpress.org/ticket/45220#comment:13>
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