[wp-trac] [WordPress Trac] #43874: REST API: Only render fields specific to request when _fields= is used

[WordPress Trac]

#43874: REST API: Only render fields specific to request when _fields= is used
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 Reporter:  danielbachhuber                  |       Owner:  (none)
     Type:  defect (bug)                     |      Status:  new
 Priority:  normal                           |   Milestone:  4.9.7
Component:  REST API                         |     Version:
 Severity:  normal                           |  Resolution:
 Keywords:  has-patch has-unit-tests commit  |     Focuses:  rest-api,
                                             |  performance
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Comment (by danielbachhuber):

 Replying to [comment:9 TimothyBlynJacobs]:
 > If the `_fields` parameter is going to start being checked off of the
 request object especially in controllers, might it be worth adding it to
 `WP_REST_Controller::get_collection_params()`?

 The `_` underscore denotes that it's a "magic" parameter handled by the
 server, not the controller. Even though our new implementation includes
 performance enhancements handled by the controller, `_fields` is
 ultimately a server-level feature. So no, I don't think it's necessary to
 include it as a collection parameter.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43874#comment:10>
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