Ticket #33521: 33521.diff

wp-admin/includes/class-wp-terms-list-table.php

@@ -164 +164 @@
          * @return array
          */
         public function get_columns() {
+                $taxonomy = $this->screen->taxonomy;
+
                 $columns = array(
                         'cb'          => '<input type="checkbox" />',
                         'name'        => _x( 'Name', 'term name' ),
@@ -177 +179 @@
                         $columns['posts'] = _x( 'Count', 'Number/count of items' );
                 }
 
-                return $columns;
+                /**
+                 * Filter the columns displayed in the Terms list table.
+                 *
+                 * @since 4.3.1
+                 *
+                 * @param array  $columns An array of column names.
+                 */
+                $columns = apply_filters( "manage_{$taxonomy}_columns", $columns );
+
+                /**
+                 * Filter the columns displayed in the Terms list table for a specific term id.
+                 *
+                 * The dynamic portion of the hook name, `$taxonomy`, refers to the term id slug.
+                 *
+                 * @since 4.3.1
+                 *
+                 * @param array $columns An array of column names.
+                 */
+                return apply_filters( "manage_{$taxonomy}_posts_columns", $columns );
         }
 
         /**
@@ -506 +526 @@
          * @return string
          */
         public function column_default( $tag, $column_name ) {
+                $taxonomy = $this->screen->taxonomy;
+
                 /**
                  * Filter the displayed columns in the terms list table.
                  *
@@ -518 +540 @@
                  * @param string $column_name Name of the column.
                  * @param int    $term_id     Term ID.
                  */
-                return apply_filters( "manage_{$this->screen->taxonomy}_custom_column", '', $column_name, $tag->term_id );
+                $column = apply_filters( "manage_{$taxonomy}_custom_column", $string = '', $column_name, $tag->term_id );
+
+                /**
+                 * If the filter isn't used, return action as per default.
+                 * Else, return the filter output.
+                 *
+                 * Fires for each custom column of a specific term id in the Term list table.
+                 *
+                 * @param string $column_name The name of the column to display.
+                 * @param int    $term_id     Term ID.
+                 *
+                 * @since 4.3.1
+                 */
+                if ( empty( $column ) ) {
+                        do_action( "manage_{$taxonomy}_custom_column", $column_name, $tag->term_id );
+                } else {
+                        return $column;
+                }
         }
 
         /**