Ticket #29853: 29853.diff

edit-tag-form.php

@@ -105 +105 @@
                 <tr class="form-field term-parent-wrap">
                         <th scope="row"><label for="parent"><?php _ex( 'Parent', 'term parent' ); ?></label></th>
                         <td>
-                                <?php wp_dropdown_categories(array('hide_empty' => 0, 'hide_if_empty' => false, 'name' => 'parent', 'orderby' => 'name', 'taxonomy' => $taxonomy, 'selected' => $tag->parent, 'exclude_tree' => $tag->term_id, 'hierarchical' => true, 'show_option_none' => __('None'))); ?>
+                                <?php
+                                $dropdown_args = array(
+                                        'hide_empty'        => 0,
+                                        'hide_if_empty'     => false,
+                                        'name'              => 'parent',
+                                        'orderby'           => 'name',
+                                        'taxonomy'          => $taxonomy,
+                                        'selected'          => $tag->parent,
+                                        'exclude_tree'      => $tag->term_id,
+                                        'hierarchical'      => true,
+                                        'show_option_none'  => __('None')
+                                );
+
+                                /** This filter is documented in wp-admin/edit-tags.php */
+                                $dropdown_args = apply_filters( 'taxonomy_parent_dropdown_args', $dropdown_args, $taxonomy, 'edit-term' ); 
+                                wp_dropdown_categories( $dropdown_args ); ?>
                                 <?php if ( 'category' == $taxonomy ) : ?>
                                 <p class="description"><?php _e('Categories, unlike tags, can have a hierarchy. You might have a Jazz category, and under that have children categories for Bebop and Big Band. Totally optional.'); ?></p>
                                 <?php endif; ?>

edit-tags.php

@@ -477 +477 @@
          * Filter the taxonomy parent drop-down on the Edit Term page.
          *
          * @since 3.7.0
+         * @since 4.1.0 Added $context parameter.
          *
          * @param array  $dropdown_args {
          *     An array of taxonomy parent drop-down arguments.
@@ -491 +492 @@
          *     @type string   $show_option_none Label to display if there are no terms. Default 'None'.
          * }
          * @param string $taxonomy The taxonomy slug.
+         * @param string $context  Filter context. Possible values (new-term|edit-term)
          */
-        $dropdown_args = apply_filters( 'taxonomy_parent_dropdown_args', $dropdown_args, $taxonomy );
+        $dropdown_args = apply_filters( 'taxonomy_parent_dropdown_args', $dropdown_args, $taxonomy, 'new-term' );
         wp_dropdown_categories( $dropdown_args );
         ?>
         <?php if ( 'category' == $taxonomy ) : // @todo: Generic text for hierarchical taxonomies ?>