在 mat-table 父级中使用 ngif 时，mat-filtering/mat-sort 无法正常工作 [英] mat-filtering/mat-sort not work correctly when use ngif in mat-table parent

问题描述

请注意，分页/排序无法正常工作.分页不显示它显示的元素数量并且排序不起作用，但是如果您删除 html 文件中的行 *ngIf="dataSource?.filteredData.length > 0" 错误是固定的.如果你使用过滤，它可以工作，但它不显示过滤量

Note that paging/sort not work correctly. Paging does not show the number of elements it is showing and sorting does not work, but if you delete the line in the html file *ngIf="dataSource?.filteredData.length > 0" the error is fixed. If you use filtering, it works, but it does not show the filter amount

检查示例.

https://stackblitz.com/编辑/angular-wqkekh-nm3pn2?file=app/table-pagination-example.html

推荐答案

在你的 component.ts 中，替换这段代码

In your component.ts, replace this code

@ViewChild(MatPaginator) paginator: MatPaginator;
@ViewChild(MatSort) sort: MatSort;

ngAfterViewInit() {
    this.dataSource.paginator = this.paginator;
    this.dataSource.sort = this.sort;
}

用这个:

  private paginator: MatPaginator;
  private sort: MatSort;


  @ViewChild(MatSort) set matSort(ms: MatSort) {
    this.sort = ms;
    this.setDataSourceAttributes();
  }

  @ViewChild(MatPaginator) set matPaginator(mp: MatPaginator) {
    this.paginator = mp;
    this.setDataSourceAttributes();
  }

  setDataSourceAttributes() {
    this.dataSource.paginator = this.paginator;
    this.dataSource.sort = this.sort;
  }

在你的 html 中:

And in your html:

    <mat-card *ngIf="!dataSource?.filteredData.length" style="margin-bottom: 5px">
        <div><span>ZERO RESULT</span></div>
    </mat-card>

    <mat-card *ngIf="dataSource?.filteredData.length">
    ** insert the table code that you have **
    </mat-card>

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