define_admin_hooks(); } private function define_admin_hooks() { add_filter( 'post_row_actions', array( $this, 'duplicate_album_link'), 10, 2); } public function duplicate_album_link( $actions, $post ) { if( 'modula-album' != get_post_type( $post ) ) { return $actions; } $actions['duplicate_modula'] = '' . esc_html__( 'Duplicate album', 'modula-albums' ) . ''; return $actions; } } new Modula_Albums_Duplicator();