
    <nz-cascader
      [nzOptionRender]="renderTpl"
      [nzOptions]="nzOptions"
      [(ngModel)]="values"
      (ngModelChange)="onChanges($event)"
    ></nz-cascader>
    <ng-template #renderTpl let-option let-index="index">{{ index + 1 }}. {{ option.label }}</ng-template>
  