[wp-trac] [WordPress Trac] #40560: REST API: Unicode characters are escaped in the response

[WordPress Trac]

#40560: REST API: Unicode characters are escaped in the response
--------------------------+-----------------------------
 Reporter:  rilwis        |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  REST API      |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 When working with languages with unicode characters (Vietnamese, to be
 precisely), the returned result of REST API requests contains escaped
 characters.

 This is an example:

 {{{
 {"hoten":"Test ko dien thong tin thi
 sinh","email":"","sodienthoai":"123123","nganhhoc":"CNTT - \u1ee8ng
 d\u1ee5ng ph\u1ea7n m\u1ec1m","ma_nganhhoc":"CNTT","diadiemhoc":"H\u00e0
 N\u1ed9i","ma_diadiemhoc":"HN","tongtien":8925000}
 }}}

 The expected result is:

 {{{
 {"hoten":"Test ko dien thong tin thi
 sinh","email":"","sodienthoai":"123123","nganhhoc":"CNTT - Ứng dụng phần
 mềm","ma_nganhhoc":"CNTT","diadiemhoc":"Hà
 Nội","ma_diadiemhoc":"HN","tongtien":8925000}
 }}}

 When looking at the `WP_REST_Server::serve_request` function, I see that
 it uses `wp_json_encode` function. While this function
 [https://secure.php.net/json_encode accepts options], they're never been
 used. In this case, the option `JSON_UNESCAPED_UNICODE` is all we need.

 Although the option is added in PHP 5.3 and we can't guarantee it work in
 all situation. But we should make an option in the REST API so developers
 can have a way to accomplish the job.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/40560>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform