[wp-trac] [WordPress Trac] #27123: get_categories returning duplicate child categories in 3.9

[WordPress Trac]

#27123: get_categories returning duplicate child categories in 3.9
------------------------------------------+--------------------
 Reporter:  BStofko                       |       Owner:
     Type:  defect (bug)                  |      Status:  new
 Priority:  normal                        |   Milestone:  3.9
Component:  Taxonomy                      |     Version:  trunk
 Severity:  normal                        |  Resolution:
 Keywords:  needs-patch needs-unit-tests  |     Focuses:
------------------------------------------+--------------------
Changes (by SergeyBiryukov):

 * component:  General => Taxonomy


Old description:

> Executing the get_categories function for child categories returns
> duplicate entries in version 3.9. This worked in version 3.8.1 so this is
> something new.
>
> My call:
>
> {{{
> $terms = get_categories( array ('child_of' => $cat));
> }}}
>
> Under version 3.8.1 returns:
>
> {{{
> terms:Array ( [0] => stdClass Object ( [term_id] => 7 [name] => Child
> Category I [slug] => child-category-i [term_group] => 0
> [term_taxonomy_id] => 7 [taxonomy] => category [description] => [parent]
> => 4 [count] => 1 [cat_ID] => 7 [category_count] => 1
> [category_description] => [cat_name] => Child Category I
> [category_nicename] => child-category-i [category_parent] => 4 ) )
>
> }}}
>
> Under version 3.9 returns:
>
> {{{
> terms:Array ( [0] => stdClass Object ( [term_id] => 7 [name] => Child
> Category I [slug] => child-category-i [term_group] => 0
> [term_taxonomy_id] => 7 [taxonomy] => category [description] => [parent]
> => 4 [count] => 1 [cat_ID] => 7 [category_count] => 1
> [category_description] => [cat_name] => Child Category I
> [category_nicename] => child-category-i [category_parent] => 4 ) [4] =>
> stdClass Object ( [term_id] => 7 [name] => Child Category I [slug] =>
> child-category-i [term_group] => 0 [term_taxonomy_id] => 7 [taxonomy] =>
> category [description] => [parent] => 4 [count] => 1 [object_id] => 1746
> [filter] => raw [cat_ID] => 7 [category_count] => 1
> [category_description] => [cat_name] => Child Category I
> [category_nicename] => child-category-i [category_parent] => 4 ) )
>
> }}}

New description:

 Executing the get_categories function for child categories returns
 duplicate entries in version 3.9. This worked in version 3.8.1 so this is
 something new.

 My call:

 {{{
 $terms = get_categories( array ('child_of' => $cat));
 }}}

 Under version 3.8.1 returns:

 {{{
 terms: Array (
         [0] => stdClass Object (
                 [term_id] => 7
                 [name] => Child Category I
                 [slug] => child-category-i
                 [term_group] => 0
                 [term_taxonomy_id] => 7
                 [taxonomy] => category
                 [description] =>
                 [parent] => 4
                 [count] => 1
                 [cat_ID] => 7
                 [category_count] => 1
                 [category_description] =>
                 [cat_name] => Child Category I
                 [category_nicename] => child-category-i
                 [category_parent] => 4
         )
 )
 }}}

 Under version 3.9 returns:

 {{{
 terms: Array (
         [0] => stdClass Object (
                 [term_id] => 7
                 [name] => Child Category I
                 [slug] => child-category-i
                 [term_group] => 0
                 [term_taxonomy_id] => 7
                 [taxonomy] => category
                 [description] =>
                 [parent] => 4
                 [count] => 1
                 [cat_ID] => 7
                 [category_count] => 1
                 [category_description] =>
                 [cat_name] => Child Category I
                 [category_nicename] => child-category-i
                 [category_parent] => 4
         )
         [4] => stdClass Object (
                 [term_id] => 7
                 [name] => Child Category I
                 [slug] => child-category-i
                 [term_group] => 0
                 [term_taxonomy_id] => 7
                 [taxonomy] => category
                 [description] =>
                 [parent] => 4
                 [count] => 1
                 [object_id] => 1746
                 [filter] => raw
                 [cat_ID] => 7
                 [category_count] => 1
                 [category_description] =>
                 [cat_name] => Child Category I
                 [category_nicename] => child-category-i
                 [category_parent] => 4
         )
 )
 }}}

--

Comment:

 Confirmed, working on a patch and unit tests.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/27123#comment:3>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform