angular - Angular2 setting property in a table column programmatically -


i using primeng2 , set frozen columns

i retrieving columns rest api in json form

colheaders:any[] = [];  getcolumnheaders(){    this.bookservice.getcolumns()      .subscribe(       res=>{        this.colheaders = res        }      )  }

on html have

<p-datatable [value]="cars" scrollable="true" frozenwidth="1200px" unfrozenwidth="600px" [style]="{'margin-top':'30px'}">       <p-column sortable="true" *ngfor="let col of colheaders" [field]="col.field" [header]="col.header"                [frozen]="col.frozen"></p-column>    </p-datatable>

the above p-column fails when setting value false

in quick googling found need not set value of frozen whether true or false

so frozen columns should have like

   <p-column sortable="true"  [frozen]="true"></p-column>

and unfrozen columns should have

       <p-column sortable="true"></p-column>  //no frozen property

so how go it

so in normal words should this

 <p-column sortable="true" *ngfor="let col of colheaders"                * *ngif="(col.frozen)" //stuck on how go on ></p-column>

wrap <p-column> tag ng-container, doesn't have dom representation, , move ngfor in it. can keep ngif in p-column:

<p-datatable [value]="cars" scrollable="true" frozenwidth="1200px" unfrozenwidth="600px" [style]="{'margin-top':'30px'}">    <ng-container *ngfor="let col of colheaders">         <p-column sortable="true" [field]="col.field" [header]="col.header"                *ngif="col.frozen" [frozen]="true"></p-column>        <p-column sortable="true" [field]="col.field" [header]="col.header"                *ngif="!col.frozen"></p-column>     </ng-container>  </p-datatable>

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