How can you apply the ngStyle directive to set the CSS property for the Angular Material Data Table header aligning it to

For this demonstration, I am attempting to dynamically set the left CSS property of the CUSTOMER mat-header-cell to 64px using ngStyle. However, it seems that Angular is overriding the value with its own interpretation, changing it to 216px after applying the ngStyle update.

Check out the code demo here for reference!

Any suggestions on how to resolve this issue?

Answer №1

It appears that the 64px setting is being overridden by a default value, as you mentioned. To address this issue, we can use the syntax left: 64px !important to ensure our desired value takes precedence. However, it's important to note that using '!important' is not compatible with ngStyle in this scenario. As a solution, we can create a new CSS class within our stylesheet:

    .leftMargin {
      left: 64px !important;
    }

Then, within the ngFor loop, we can apply this newly defined class only when the column name matches 'customer':

     <ng-container *ngFor="let c of COLUMNS" matColumnDef="{{c.toUpperCase()}}" [sticky]="isSticky(c)">
            <mat-header-cell [ngClass]="{'leftMargin': c=='CUSTOMER'}" [ngStyle]="styleHeaderCell(c)" *matHeaderCellDef mat-sort-header>
              {{c.toUpperCase().split('_').join('')}}
            </mat-header-cell>
            <mat-cell *matCellDef="let row;">{{row[c.toLowerCase()] ? row[c.toLowerCase()] : row[c.toUpperCase()]}}
            </mat-cell>
     </ng-container>

You can view an example implementation on this StackBlitz page: Click here for the demo.

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