<p-treeTable [value]="filesTemplating" [columns]="cols">
  <ng-template pTemplate="caption">
    FileSystem
  </ng-template>
  <ng-template pTemplate="header" let-columns>
    <tr>
      <th *ngFor="let col of columns">
        { { col.header } }
      </th>
      <th style="width: 8rem">
        <p-button icon="pi pi-cog"></p-button>
      </th>
    </tr>
  </ng-template>
  <ng-template pTemplate="body" let-rowNode let-rowData="rowData" let-columns="columns">
    <tr>
      <td *ngFor="let col of columns; let i = index">
        <p-treeTableToggler [rowNode]="rowNode" *ngIf="i == 0"></p-treeTableToggler>
        { { rowData[col.field] } }
      </td>
      <td>
        <p-button icon="pi pi-search" styleClass="p-button-success" [style]="{'margin-right': '.5em'}"></p-button>
        <p-button icon="pi pi-pencil" styleClass="p-button-warning"></p-button>
      </td>
    </tr>
  </ng-template>
  <ng-template pTemplate="summary">
    <div style="text-align:left">
      <p-button icon="pi pi-refresh"></p-button>
    </div>
  </ng-template>
</p-treeTable>