[wp-trac] [WordPress Trac] #36846: Allow get_terms() to return slug&name fields

[WordPress Trac]

#36846: Allow get_terms() to return slug&name fields
--------------------------+-----------------------------
 Reporter:  ramiy         |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Taxonomy      |    Version:
 Severity:  normal        |   Keywords:
  Focuses:  performance   |
--------------------------+-----------------------------
 When we use the
 [https://developer.wordpress.org/reference/functions/get_terms/
 get_terms()] function, we can choose not to return the complete term
 objects but a smaller array with predefined fields (for performance).

 it's done using `fields` argument:
 {{{
 $terms = get_terms( array(
         'taxonomy' => 'post_tag',
         'fields'   => 'all',
 ) );
 }}}

 Currently, the `fields` argument supports the following:

 * `all` - returns an array of complete term objects. (DEFAULT)
 * `ids` - returns an array of ids.
 * `names` - returns an array of term names.
 * `count` - returns the number of matching terms.
 * `id=>parent` - returns an associative array with ids as keys, parent
 term IDs as values.
 * `id=>name` - returns an associative array with ids as keys, term names
 as values.
 * `id=>slug` - returns an associative array with ids as keys, term slugs
 as values.

 The problem is that in a growing number of websites I need to return only
 term-slugs and term-names.

 My patch adds another variation to the `fields` argument:
 * `slug=>name` - returns an associative array with term slugs as keys,
 term names as values.

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Ticket URL: <https://core.trac.wordpress.org/ticket/36846>
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