Question

我有一个位于primeNG数据表之外的刷新按钮。如何以编程方式触发刷新数据表？

类似的东西：

<div class="pull-right">
  <button
    id="FilterBtnId"
    (click)="???">
  </button>
                </div>
<p-dataTable
   #datatable
   [value]="datasource"
   [(selection)]="jobs"
   [totalRecords]="totalRecords"
   selectionMode="multiple"
   resizableColumns="true"
   [pageLinks]="10"
   [rows]="10"
   [rowsPerPageOptions]="[10, 25, 50, 100]"
   [paginator]="true"
   [responsive]="true"
   [lazy]="true"
   (onLazyLoad)="getNewDatasource($event)"
   (onRowSelect)="onRowSelect($event)"
   >
     <p-column [style]="{'width':'40px'}" selectionMode="multiple"></p-column>
     <p-column *ngFor="let col of dt.colDefs" [field]="col.field" [header]="col.headerName" [sortable]="true">
     </p-column>
</p-dataTable>

Answer 1

Angular form guide包含一个可以用作解决方法的小技巧，它包括通过向元素添加*ngIf来重新创建dom以控制其可见性

visible: boolean = true;
updateVisibility(): void {
  this.visible = false;
  setTimeout(() => this.visible = true, 0);
}

<button (click)="updateVisibility()">
<p-dataTable *ngIf="visible">

Answer 2

我们可以在这里更新dataTable的小技巧：我们可以通过向元素添加* ngIf来重新创建div来控制它的可见性，它也会更新dataTable。

    visible: boolean = true;
    updateVisibility(): void {
      this.visible = false;
    }
    <button (click)="updateVisibility()">

    <div *ngIf="visible">
        <p-dataTable></p-dataTable>
    </div>

Answer 3

如果刷新组件中的列表，表将自动刷新。确认删除操作后的示例：

import { Component } from '@angular/core';
import { Interface } from '../..//model/interface.model'
import { InterfaceService } from '../../service/interface.service'
import { ButtonModule } from 'primeng/primeng';
import { ConfirmDialogModule, ConfirmationService } from 'primeng/primeng';

@Component({
    templateUrl: './interfaces.component.html'
})
export class InterfacesComponent {

    interfaces: Interface[];

    constructor(
        private interfaceService: InterfaceService,
        private confirmationService: ConfirmationService
    ) { }

    ngOnInit() {
        this.find();
    }

    find() {
        this.interfaceService.query().then(interfaces => this.interfaces = interfaces);
    }

    confirm(id: number) {
        this.confirmationService.confirm({
            message: 'Are you sure that you want to delete this record?',
            accept: () => {
                this.interfaceService.delete(id).then((_interface) => {
                    this.find();
                });            
            }
        });
    }

}

Answer 4

Rendere2 很有帮助

@ViewChild('table') table: Table;

constructor(private renderer: Renderer2) {
}

refreshTable(){
    const dataTableRef = this.renderer.selectRootElement(this.table.el.nativeElement, true);
    dataTableRef.focus();
}

dataTableRef.focus() 将刷新网格

Answer 5

如果表格处于懒惰模式（使用分页等从服务器动态加载数据...），则列出了执行此操作的更好方法（保留页码、排序、过滤器等）{{3 }}。

解决办法是：

在您的组件模板上：

<p-table [value]="yourData" [lazy]="true" (onLazyLoad)="loadUserData($event)" ...

关于您的组件代码：

private lastTableLazyLoadEvent: LazyLoadEvent;

loadUserData(event: LazyLoadEvent): void {
    this.lastTableLazyLoadEvent = event;
    // Lots of beautifull data loading code here 
    // (like calling a server trough a service and so on)...
}

...

当您想重新加载表格时（例如，当您从服务器插入或删除项目时）：

this.loadUserData(this.lastTableLazyLoadEvent);

如何在单击按钮时以编程方式触发刷新primeNG数据表

5 个答案: