有什么方法可以检查元素属性的值(在这种情况下 element.VerificationCode),并以此为基础切换单元格的内容?
我需要在单元格中显示VerificationCode,如果element.VerificationCode为null,则显示按钮以生成一个。
示例
<ng-container matColumnDef="VerificationCode">
<th mat-header-cell *matHeaderCellDef mat-sort-header> Family code </th>
<td mat-cell *matCellDef="let element" (click)="$event.stopPropagation()
<!-- 1 -->
{{element.VerificationCode}}
<!-- 2 -->
<button mat-stroked-button (click)="genVerificationCode(group.id)">
Generate
</button>
</td>
</ng-container>
答案 0 :(得分:1)
@TeddySterne版本的替代方法(我相信这是在最新版本的Angular中首选的方式,但我可能是错的):
<td mat-cell *matCellDef="let element" (click)="$event.stopPropagation()">
<ng-container *ngIf="element.VerificationCode">{{element.VerificationCode}}</ng-container>
<button *ngIf="!element.VerificationCode" mat-stroked-button (click)="genVerificationCode(group.id)">Generate</button>
</td>
答案 1 :(得分:0)
您可以将ngIf
与else语句一起使用来完成它。示例:
<td mat-cell *matCellDef="let element" (click)="$event.stopPropagation()">
<span *ngIf="element.VerificationCode; else showButton">{{element.VerificationCode}}</span>
<ng-template #showButton>
<button mat-stroked-button (click)="genVerificationCode(group.id)">
Generate
</button>
</ng-template>
</td>