[wp-trac] [WordPress Trac] #23421: Follow on from #21240. Add sortable to taxonomy column

[WordPress Trac]

#23421: Follow on from #21240. Add sortable to taxonomy column
-----------------------------+-----------------------------
 Reporter:  tifosi           |       Type:  feature request
   Status:  new              |   Priority:  normal
Milestone:  Awaiting Review  |  Component:  Taxonomy
  Version:                   |   Severity:  normal
 Keywords:                   |
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 Following on from the #21240 ticket which introduced the show_admin_column
 functionality one limitation is the 'as easy' way to make that column
 sortable.

 It's possible to do it through the
 'manage_edit-{$post_type}_sortable_columns' filter but the column_key is
 different for 3.5+. A standardisation as for adding the column may be
 advantageous: a register_taxonomy argument and / or new filter.

 argument: show_column_sortable, boolean default false, requires
 show_admin_column to be set and true.

 In the same way that the get_columns function uses the new
 "manage_taxonomies_for_{$post_type}_columns", filter to add a taxonomy
 column there could be a
 "manage_taxonomies_for_{$post_type}_sortable_columns" filter in the
 get_sortable_columns function of the post-list class:

 i.e.

 function get_sortable_columns() {
   $default = array(
               'title'    => 'title',
               'parent'   => 'parent',
               'comments' => 'comment_count',
               'date'     => array( 'date', true )
               );

  return apply_filters(
 "manage_taxonomies_for_{$post_type}_sortable_columns", $default );
         }

 The developer could then set the filter as normal
 add_filter ( "manage_taxonomies_for_{$post_type}_columns",
 'add_sortable_column' );

 function add_sortable_column ( $columns ) {
  $columns[ taxonomy-tax_name ] = 'Taxonomy Label';
  return $columns;
 }

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Ticket URL: <http://core.trac.wordpress.org/ticket/23421>
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