[wp-trac] [WordPress Trac] #40904: Cannot display meta value in REST API

[WordPress Trac]

#40904: Cannot display meta value in REST API
--------------------------+-----------------------------
 Reporter:  conner_bw     |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  REST API      |    Version:  4.7.5
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 Steps to reproduce:

 {{{#!php
 add_action( 'init', function() {
         register_meta( 'post', 'zigzag', [ 'show_in_rest' => true ] );
 } );
 }}}

 In WordPress multi-site, edit an existing post and add a a custom value
 for key name 'zigzag', save the post.

 Go to: http://DOMAIN/SITE/wp-json/wp/v2/posts/ID

 Expected: meta node has a value for zigzag
 Actual: zigzag is empty.

 Reference: scroll down to "Working with Meta"
 https://developer.wordpress.org/rest-api/extending-the-rest-api/modifying-
 responses/

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Ticket URL: <https://core.trac.wordpress.org/ticket/40904>
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