Angular 9、ngx-datatable 鼠标悬停时显示按钮

Question

我试图在鼠标悬停在 ngx-datatable 的相应单元格上时显示 link，但它在该特定列的所有行上显示 link，这是我的代码正在做：

<ngx-datatable
        class="material ml-0 mr-0"
        [rows]="users"
        [columnMode]="'flex'"
        [headerHeight]="50"
        [footerHeight]="50"
        [limit]="10"
        [rowHeight]="'auto'">
        <ngx-datatable-column name="User Name" [flexGrow]="1">
            <ng-template let-row="row" ngx-datatable-cell-template>
            {{ row?.userName }}
            </ng-template>
        </ngx-datatable-column>
        <ngx-datatable-column name="Role" [flexGrow]="1">
            <ng-template let-row="row" let-rowIndex="rowIndex" ngx-datatable-cell-template let-value="value">
                <div (mouseenter)="showRoleOpt(rowIndex,true, $event)" (mouseleave)="showRoleOpt(rowIndex,false, $event)">{{ row?.role }} <a *ngIf="showRoleOptions">Change</a></div>
            </ng-template>
        </ngx-datatable-column>
        <ngx-datatable-column name="First Name" [flexGrow]="1">
            <ng-template let-row="row" ngx-datatable-cell-template>
                {{ row?.firstName }}
            </ng-template>
        </ngx-datatable-column>
        <ngx-datatable-column name="Last Name" [flexGrow]="1">
            <ng-template let-row="row" ngx-datatable-cell-template>
                {{ row?.lastName }}
            </ng-template>
        </ngx-datatable-column>
        <ngx-datatable-column name="Email" [flexGrow]="1">
            <ng-template let-row="row" ngx-datatable-cell-template>
                {{ row?.email }}
            </ng-template>
        </ngx-datatable-column>
        <ngx-datatable-column name="Phone Number" [flexGrow]="1">
            <ng-template let-row="row" ngx-datatable-cell-template>
                {{ row?.phoneNumber }}
            </ng-template>
        </ngx-datatable-column>
        <ngx-datatable-column name="Actions" [flexGrow]="1">
            <ng-template let-row="row" ngx-datatable-cell-template>
            <button mat-icon-button mat-sm-button color="primary" class="mr-1" (click)="openPopUp(row)"><mat-icon>edit</mat-icon></button>
            <button mat-icon-button mat-sm-button color="warn" (click)="deleteItem(row)"><mat-icon>delete</mat-icon></button>
            </ng-template>
        </ngx-datatable-column>
</ngx-datatable>

TS代码：

showRoleOpt(row, opt: boolean, $event) {
    console.log($event.target);
    this.showRoleOptions = opt;
  }

我试图将一些 ID 放入 div，希望检查事件是否有我可以做的事情。但没有得到任何线索。

Answer 1

此行为背后的原因是您对所有 rows 使用相同的 flag，因此您可以在每一行上都有标志：

<ng-template let-row="row" let-rowIndex="rowIndex" ngx-datatable-cell-template let-value="value">
                <div (mouseenter)="showRoleOpt(row,true, $event)" (mouseleave)="showRoleOpt(row,false, $event)">{{ row?.role }} <a *ngIf="row.showRoleOptions">Change</a></div>
</ng-template>

ts:

showRoleOpt(row:any, opt: boolean, $event) {
    console.log($event.target);
    row.showRoleOptions = opt;
}

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