WP_Media_List_Table::column_default() WordPress Method

	public function column_default( $item, $column_name ) {
		// Restores the more descriptive, specific name for use within this method.
		$post = $item;

		if ( 'categories' === $column_name ) {
			$taxonomy = 'category';
		} elseif ( 'tags' === $column_name ) {
			$taxonomy = 'post_tag';
		} elseif ( 0 === strpos( $column_name, 'taxonomy-' ) ) {
			$taxonomy = substr( $column_name, 9 );
		} else {
			$taxonomy = false;
		}

		if ( $taxonomy ) {
			$terms = get_the_terms( $post->ID, $taxonomy );

			if ( is_array( $terms ) ) {
				$out = array();
				foreach ( $terms as $t ) {
					$posts_in_term_qv             = array();
					$posts_in_term_qv['taxonomy'] = $taxonomy;
					$posts_in_term_qv['term']     = $t->slug;

					$out[] = sprintf(
						'<a href="%s">%s</a>',
						esc_url( add_query_arg( $posts_in_term_qv, 'upload.php' ) ),
						esc_html( sanitize_term_field( 'name', $t->name, $t->term_id, $taxonomy, 'display' ) )
					);
				}
				echo implode( wp_get_list_item_separator(), $out );
			} else {
				echo '<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">' . get_taxonomy( $taxonomy )->labels->no_terms . '</span>';
			}

			return;
		}

		/**
		 * Fires for each custom column in the Media list table.
		 *
		 * Custom columns are registered using the {@see 'manage_media_columns'} filter.
		 *
		 * @since 2.5.0
		 *
		 * @param string $column_name Name of the custom column.
		 * @param int    $post_id     Attachment ID.
		 */
		do_action( 'manage_media_custom_column', $column_name, $post->ID );
	}