docs: def _create_fulltext_query(self):
          """Support the json-server fulltext search with a broad LIKE filter."""
          filter_by = []
  
          if 'q' in request.args:
              columns = flat_model(model_tree(self.__class__.__name__, self.model_cls))
              for q in request.args.getlist('q'):
                  filter_by += ['{col}::like::%{q}%'.format(col=col, q=q) for col in columns]
  
          return filter_by