Angular 4.0 Teradata ng-template with ngFor

Question

I'm using the td-data-table from the teradata/covalent framework but independet from the framework I'd like to use *ngFor in an like this:

<ng-template *ngFor="let column of columns" tdDataTableTemplate="{{column.name}}" let-value="value">
    <div>
        <span>{{value.content}}</span>
        <br>
        <span *ngIf="enabler">{{value.subContent}}</span>
    </div>
</ng-template>

I've read that the syntax for using *ngFor with an is different, so I've tried this:

<ng-template ngFor let-column [ngForOf]="columns" tdDataTableTemplate="{{column.name}}" let-value="value">
    <div>
        <span>{{value.content}}</span>
        <br>
        <span *ngIf="enabler">{{value.subContent}}</span>
    </div>
</ng-template>

Is it the framework which is preventing the code to work or have I written something wrong?