Angular * ngFor指令在视图上显示数据

Question

使用angular primeng API并遵循文档

API [
      id: 1, name:"Test 1", currency: "Euro", status: "Active", date: "4th of April 2008" },
      id: 2, name:"Test 2", currency: "Dollar", status: "Active", date: "12nd of May 2005" }
   ]

 ngOnInit {
   this.col = [
     {field: 'name', header: 'Name'},
     {field: 'currency',  header: 'Currency'},
     {field: 'status', header: 'Status'},
     {field: 'date', header: 'Date'}
   ]
}

我可以使用* ngFor成功渲染数据

Template.html
<tr>
  <td *ngFor="let col of column">
      {{rowData[col.field]}}
  </td>
<tr>

现在，我需要对每个数据值进行修改，例如：

*名称使用大写管道*货币使用货币管道*日期使用日期管道

<td *ngFor="let col of columne">
   <ng-container *ngIf="col.field === 'date'"> {{rowData[col.field] | date: 'dd/MMM/yyyy'}}</ng-container>
   <ng-container *ngIf="col.field === 'currency'"> {{rowData[col.field] | currency:'CAD':'code'}}</ng-container>
   <ng-container *ngIf="col.field === 'name'"> {{rowData[col.field] | uppercase}}</ng-container>
</td>

如何修改正在渲染的数据，并为每个值进行相应的修改

Answer 1

您可以改用ngSwitch进行少量改进：

  <ng-container *ngFor="let col of columne">
    <td [ngSwitch]="col.field">
       <ng-container *ngSwitchCase="'date'"> {{rowData[col.field] | date: 'dd/MMM/yyyy'}}</ng-container>
       <ng-container *ngSwitchCase="'currency'"> {{rowData[col.field] | currency:'CAD':'code'}}</ng-container>
       <ng-container *ngSwitchCase="'name'"> {{rowData[col.field] | uppercase}}</ng-container>
       <ng-container *ngSwitchDefault>{{rowData[col.field]}}</ng-container
    </td>
  </ng-container>

但是我建议使用一些提供表的组件库，如果您需要一个带有动态列的表。由于您的其他选择实际上会涉及滚动您自己的可重复使用的表组件，这可能会过大。

Answer 2

我与@ bryan60持有相同的意见。 Material table can save you from such nightmares

const dataSource = [
  {id: 1, name:"Test 1", currency: "Euro", status: "Active", date: "4th of April 2008" },
  {id: 2, name:"Test 2", currency: "Dollar", status: "Active", date: "12nd of May 2005" }
];
displayedColumns: string[] = ['id', 'name', 'currency', 'status', 'date'];

<table mat-table [dataSource]="dataSource" class="mat-elevation-z8">

  <ng-container matColumnDef="id">
    <th mat-header-cell *matHeaderCellDef> Id </th>
    <td mat-cell *matCellDef="let element"> {{element.id}} </td>
  </ng-container>

  <ng-container matColumnDef="name">
    <th mat-header-cell *matHeaderCellDef> Name </th>
    <td mat-cell *matCellDef="let element"> {{element.name}} </td>
  </ng-container>

  <ng-container matColumnDef="currency">
    <th mat-header-cell *matHeaderCellDef> Currency </th>
    <td mat-cell *matCellDef="let element"> {{1 | currency: element.currency}} </td>
  </ng-container>

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

  <ng-container matColumnDef="date">
    <th mat-header-cell *matHeaderCellDef> Date</th>
    <td mat-cell *matCellDef="let element"> {{element.date | date: 'dd/MM/yyyy' }} </td>
  </ng-container>

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

Answer 3

这里是我使用CDK表创建的示例：

https://stackblitz.com/edit/angular-ivy-bes8zf

它使用动态方法。