Angular Material Table Cell Formatting

Question

I\'m using angular material table for displaying data and dyanmically binding the table header and table data. Is there any way to format particaular column\'s cell content dyn

Answer 1

You can dynamically set the column alignment to right by adding something like, [align]="expression ? 'right' : ''" to the <td> element, so for your code this would look like:

<table mat-table [dataSource]="dataSource" class="" style="width: 100%;">

      <ng-container [matColumnDef]="col" *ngFor="let col of displayedColumns; let i = index">
        <th *matHeaderCellDef> {{displayedFields[i].name}}</th>
        <td mat-cell *matCellDef="let element" [align]="col === 'AMOUNT' ? 'right' : ''"> {{ element[col] }} </td>
      </ng-container> 

      <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
      <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
    </table>

Answer 2

If you want to style cells on a mat-table you can target every element inside by using the ::ng-deep CSS selector like this:

::ng-deep th.mat-header-cell{
    width: 140px;
    min-width: 140px;
}

You can also use [ngClass] to apply classes to a cell based on a condition like this:

 <ng-container matColumnDef="outcome">
  <th mat-header-cell *matHeaderCellDef mat-sort-header class="border"> Outcome </th>
  <td mat-cell *matCellDef="let element" class="font-weight-normal text-center text-capitalize"
  [ngClass]="[element.outcome == '' ? 'not-provided' : 'not-provided',
            element.outcome == 'stopped' ? 'provided-stoped' : 'not-provided']">{{element.outcome == '' ? "not provided" : "provided"}}</span> </td>
</ng-container>

and you just define the classes in your CSS file

Answer 3

Best solution is to use selector in css as below where 'column_name' is the name you provide in 'matColumnDef'

.mat-column-'column_name'{
   //your custom css 
   text-align: right;
 }

if your column 'matColumnDef' is 'amount'

.mat-column-amount{
   //your custom css 
   text-align: right;
 }

Answer 4

At our project at work we use a lot of mat-tables. I've never had luck making any kind of truly customized table by ngFor-ing over the <ng-container>. Almost every one of our tables is built by individually defining each <ng-container> for each column.

<ng-container matColumnDef="code">
    <th mat-header-cell *matHeaderCellDef> Employee Code </th>
    <td mat-cell *matCellDef="let employee"> {{ employee.code }} </td>
</ng-container>

<ng-container matColumnDef="description">
    <th mat-header-cell *matHeaderCellDef> Status </th>
    <td mat-cell *matCellDef="let employee"> 
          {{ employee.status?.description }} 
    </td>
</ng-container>

<ng-container matColumnDef="salary">
    <th mat-header-cell *matHeaderCellDef> Salary </th>
    <td mat-cell *matCellDef="let employee"> {{ employee.salary | currency}} </td>
</ng-container>

The advantage of this is you can define each column with the styles you want, as well as add more property-specific options such as pipes and/or the elvis operator.