Экспорт определенных столбцов в p-datatable

От Документ PrimeNG

In order to exclude a column from the csv, use [exportable] = "false" on p-column.

Для получения определенного столбца есть одно решение. Html-страница:

<p-dataTable #dg [value] = "groupdetails" selectionMode = "multiple" resizableColumns = "true" reorderableColumns = "true"  expandableRows = "true" [paginator] = "true" [rows] = "5" [pageLinks] = "3" [rowsPerPageOptions] = "[5,10,20]" [loading] = "ploader3">
     <p-header>
        <div class = "ui-helper-clearfix">
        <button class = "btn btn-info" type = "button" (click) = "dg.exportCSV({selectionOnly:true})" style = "float:left"><i class = "fa fa-download" aria-hidden = "true"></i> SELECTED EXPORT</button>
        <button class = "btn btn-info" type = "button" (click) = "export(dg)" style = "float:right"><i class = "fa fa-download" aria-hidden = "true"></i> Export</button>
        </div>
     </p-header>
     <p-column field = "groupName" [filter] = "true" [sortable] = "true" header = "groupName"></p-column>
     <p-column field = "groupId" [filter] = "true" [sortable] = "true" header = "groupId"></p-column>
     <p-column field = "parentGroupId" [filter] = "true" [sortable] = "true" header = "parentGroupId"></p-column>
</p-dataTable>

На странице Ts:

public export(e){ 
 const hiddenColumns: any[] = [];
 e.columns.forEach((c) => {
  if (c.field === "hiddencolumnName" ) {
    hiddenColumns.push({field: c.field, col: c});
    c.field = '';
  } if (c.field === "hiddencolumnName2" ) {
    hiddenColumns.push({field: c.field, col: c});
    c.field = '';
  } 
}
e.exportCSV();
// restore their fields so still works in the future
hiddenColumns.forEach((hc) => {
  hc.col.field = hc.field;
});
}

Добавьте столбцы в скрытый массив, который вы не хотите экспортировать.