暂且不提供为其特定表提供行分组的库,我试图在Angular Material 2 mat-table上实现这样一个功能,它没有这样的功能.
填充表格的项目:
export class BasketItem{ public id: number; public position: number; public quantity: number; public groupId: number; }
对下表中具有相同groupId属性的行进行分组
Position {{basketItem.position}} Quantity {{basketItem.quantity}} GroupId {{basketItem.GroupId }}
关于如何处理行分组的任何想法?
一个非常简单的答案是按GroupID排序,这会将这些行组合在一起.但是,我猜你想在每个组之前显示一个标题行.
您可以提供
然后,您提供给表的数据将是散布有组行的数据行,而该函数则告诉另一个数据行.将Basic 并将groupHeader列和额外的matRowDef添加到app/table-basic-example.html: 这是一个完成的stackblitz,它按元素的首字母分组. 这里有一个更加发达的stackblitz只提供你想要分组的列列表,它会为你插入组行.您还可以单击组行以展开或折叠它们 最后,这是一个Github项目,它从材料代码库修改MatTableDataSource类的副本.与过滤器和排序很好地配合,但与竞争对手'竞争',因为它们都以不同的方式限制记录的视图.作为入门者使用,手动添加组并将where子句功能添加到app/table-basic-example.ts:
import {Component} from '@angular/core';
export interface PeriodicElement {
name: string;
position: number;
weight: number;
symbol: string;
}
export interface Group {
group: string;
}
const ELEMENT_DATA: (PeriodicElement | Group)[] = [
{group: "Group 1"},
{position: 1, name: 'Hydrogen', weight: 1.0079, symbol: 'H'},
{position: 2, name: 'Helium', weight: 4.0026, symbol: 'He'},
{position: 3, name: 'Lithium', weight: 6.941, symbol: 'Li'},
{position: 4, name: 'Beryllium', weight: 9.0122, symbol: 'Be'},
{group: "Group 2"},
{position: 5, name: 'Boron', weight: 10.811, symbol: 'B'},
{position: 6, name: 'Carbon', weight: 12.0107, symbol: 'C'},
{position: 7, name: 'Nitrogen', weight: 14.0067, symbol: 'N'},
{group: "Group 3"},
{position: 8, name: 'Oxygen', weight: 15.9994, symbol: 'O'},
{position: 9, name: 'Fluorine', weight: 18.9984, symbol: 'F'},
{position: 10, name: 'Neon', weight: 20.1797, symbol: 'Ne'},
];
/**
* @title Basic use of `
`
*/
@Component({
selector: 'table-basic-example',
styleUrls: ['table-basic-example.css'],
templateUrl: 'table-basic-example.html',
})
export class TableBasicExample {
displayedColumns: string[] = ['position', 'name', 'weight', 'symbol'];
dataSource = ELEMENT_DATA;
isGroup(index, item): boolean{
return item.group;
}
}
/** Copyright 2018 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license */
Copyright © 1998 - 2020 DevBox.CN. All Rights Reserved devBox.cn 开发工具箱 版权所有