[wp-trac] [WordPress Trac] #38131: REST API: Provide interface to include or exclude specific fields from response JSON

[WordPress Trac]

#38131: REST API: Provide interface to include or exclude specific fields from
response JSON
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 Reporter:  kadamwhite   |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Future Release
Component:  REST API     |     Version:  4.4
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:  performance
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Comment (by adamsilverstein):

 @TimothyBlynJacobs Thanks for the updated patch here, it makes sense to
 include the filtering code in the controller itself. The nested field
 support is also nice - my only concern would be about the overhead.

 In terms of limiting fields queried, there is a deeper issue here with
 cache hydration - the query is expected to hydrate the cache for
 subsequent queries (also the reason WP_QUERY only offers a few options for
 it's '`fields` parameter). if we only queried for some fields, we couldn't
 hydrate the cache fully, and subsequent (on the same page even) queries
 for post data would fail (or need another query).

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Ticket URL: <https://core.trac.wordpress.org/ticket/38131#comment:26>
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