[wp-trac] [WordPress Trac] #41678: Make sure all field returns use filters in WP Query

[WordPress Trac]

#41678: Make sure all field returns use filters in WP Query
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 Reporter:  spacedmonkey                         |       Owner:
     Type:  enhancement                          |      Status:  new
 Priority:  normal                               |   Milestone:  Awaiting
Component:  Query                                |  Review
 Severity:  normal                               |     Version:  1.5
 Keywords:  has-patch needs-unit-tests dev-      |  Resolution:
  feedback                                       |     Focuses:
                                                 |  performance
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Changes (by spacedmonkey):

 * keywords:   => has-patch needs-unit-tests dev-feedback
 * version:   => 1.5


Comment:

 In [https://core.trac.wordpress.org/attachment/ticket/41678/41678.diff
 41678.diff] code has be refactored to run through more filters.

 Key features
 - There are now 2 only types of query, id and all fields. id=>parents are
 now treated the same as all fields and the return is changed at the latest
 possible moment.
 - New filter added named `posts_results_ids` for query of 'ids', to get a
 filter of result of query. Useful for caching plugins. This new filter is
 added, as `posts_results` expects an array of `WP_Post` objects.
 - 'id=>parents' now runs through the following filters `the_posts`,
 `posts_results`, `posts_request_ids` and `split_the_query`.

 This patch will be extremely useful for a plugin like elasticpress.

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Ticket URL: <https://core.trac.wordpress.org/ticket/41678#comment:1>
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