code: function() {
      this.clear_rows();
      if(! this.isEmptyTable()) {
        if(this.dataModel.fetched) {
          var self = this;
  
          this.dataModel.each(function(row) {
            self.addRow(row);
          });
        } else {
          this._renderLoading();
        }
      } else {
        this._renderEmpty();
      }
  
    }
docs: render only data rows