Creating a data table with material design and integrated form features to store and save records - a step-by

Encountering numerous errors

Unable to read property 'toUpperCase' of undefined ("
]*matRowDef="columns:displayedColumns" >

For dynamically adding rows to the table

<button (click)="addABunch(3)">Add 3</button>

For creating the user with their name and mobile number

<mat-table #table>
            <ng-container matColumnDef="Username">
            <mat-header-cell *matHeaderCellDef>Name</mat-header-cell>
            <mat-cell >
                <mat-form-field class="example-full-width">
                    <input class="form-control" matInput 
                                   formControlName="Name">
                  </mat-form-field>
            </cell>
            </ng-container>
        <ng-container matColumnDef="Mobile">
            <mat-header-cell *matHeaderCellDef>Mobile Number</mat-header-cell>
            <mat-cell>
                <mat-form-field class="example-full-width">
                    <input class="form-control" matInput 
                         formControlName="Mobile">
                  </mat-form-field>
            </cell>
            </ng-container>
            <mat-header-row *matHeaderRowDef="displayedColumns">
                        </mat-header-row>
            <mat-row *matRowDef="columns: displayedColumns"></mat-row>
                 </mat-table>

Also, here is the corresponding Typescript code

 displayedColumns = ['Name', 'Mobile'];

addABunch(n: number) {
  for (let x = 0; x < n; x++) {
    this.items.push({ value: ++this.max });
  }
}

Answer №1

It appears that the matRowDef statement you've used is invalid. Please try replacing it with the following:

<mat-row *matRowDef="let row; columns: displayedColumns;"></mat-row>

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