如何在ag-grid中动态添加自定义列

我堆积在 ag-grid 中动态添加自定义列。 我尝试过以下方法。

additionalCol = { field:'SOME RANDOM', headerName: 'SOME RANDOM' };
$scope.gridOptions.columnApi.addValueColumn(additionalCol);

我也尝试过

$scope.columns.push(additionalCol);
$scope.gridOptions.api.refreshView();

but didn't get success. I even tried to add columns that exist in Data but failed. Below is Image for what I am trying.

如图所示，“% dev”是自定义列，我需要使用动态计算的值动态添加它。

尝试这个：

var columnDefs = $scope.gridOptions.columnDefs;
columnDefs.push({ field:'SOME RANDOM', headerName: 'SOME RANDOM'});
$scope.gridOptions.api.setColumnDefs(columnDefs);