聊聊怎么利用angular Material做统计表格
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怎么利用angular Material做统计表格?下面本篇文章给大家介绍一下用angular Material 做统计表格的方法,希望对大家有所帮助!
用angular Material 做统计表格
安装 Angular Material、组件开发工具 (CDK) 和 Angular 动画库,并运行代码原理图
- ng add @angular/material
表格原理图将创建一个组件,它可以渲染出一个预置了可排序、可分页数据源的 Angular Material。
- ng generate @angular/material:table texe1
然后在这的基础上进行修改。
该组件的html文件
- <div class="mat-elevation-z8">
- <table mat-table class="full-width-table" matSort aria-label="Elements">
- <!-- Id Column -->
- <ng-container matColumnDef="id">
- <th mat-header-cell *matHeaderCellDef mat-sort-header>序号</th>
- <td mat-cell *matCellDef="let row">{{row.id}}</td>
- </ng-container>
- <!-- Name Column -->
- <ng-container matColumnDef="name">
- <th mat-header-cell *matHeaderCellDef mat-sort-header> 岩土名</th>
- <td mat-cell *matCellDef="let row">{{row.name}}</td>
- </ng-container>
- <!-- num1 Column -->
- <ng-container matColumnDef="num1">
- <th mat-header-cell *matHeaderCellDef mat-sort-header> 期望数量</th>
- <td mat-cell *matCellDef="let row">{{row.num1}}</td>
- </ng-container>
- <!-- num2 Column -->
- <ng-container matColumnDef="num2">
- <th mat-header-cell *matHeaderCellDef mat-sort-header> 当前数量</th>
- <td mat-cell *matCellDef="let row">{{row.num2}}</td>
- </ng-container>
- <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
- <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
- </table>
- <!-- 控制表格数据的显示长度 -->
- <mat-paginator #paginator
- [length]="dataSource?.data?.length"
- [pageIndex]="0"
- [pageSize]="10"
- [pageSizeOptions]="[5, 10, 17]"
- aria-label="Select page">
- </mat-paginator>
- </div>
该组件的texe1-datasource.ts文件
- import { DataSource } from '@angular/cdk/collections';
- import { MatPaginator } from '@angular/material/paginator';
- import { MatSort } from '@angular/material/sort';
- import { map } from 'rxjs/operators';
- import { Observable, of as observableOf, merge } from 'rxjs';
- // TODO: Replace this with your own data model type
- export interface Texe1Item {
- name: string;
- id: number;
- num1: number;
- num2: number;
- }
- // TODO: replace this with real data from your application
- const EXAMPLE_DATA: Texe1Item[] = [
- {id: 1, name: '粉质粘土', num1:1000, num2:100,},
- {id: 2, name: '淤泥质粉质粘土', num1:1000, num2:100,},
- {id: 3, name: '粘土', num1:1000, num2:100,},
- {id: 4, name: '粘质粉土', num1:1000, num2:100,},
- {id: 5, name: '淤泥质粘土', num1:1000, num2:100,},
- {id: 6, name: '圆砾(角砾)', num1:1000, num2:100,},
- {id: 7, name: '中砂', num1:1000, num2:1000,},
- {id: 8, name: '有机质土', num1:1000, num2:100,},
- {id: 9, name: '泥炭质土A', num1:1000, num2:100,},
- {id: 10, name: '泥炭质土B', num1:1000, num2:100,},
- {id: 11, name: '砂质粉土', num1:1000, num2:100,},
- {id: 12, name: '粉砂', num1:1000, num2:100,},
- {id: 13, name: '细砂', num1:1000, num2:100,},
- {id: 14, name: '粗砂', num1:1000, num2:100,},
- {id: 15, name: '砾砂', num1:1000, num2:100,},
- {id: 16, name: '卵石(碎石)', num1:1000, num2:100,},
- {id: 17, name: '漂石(块石)', num1:1000, num2:100,},
- ];
- /**
- * Data source for the Texe1 view. This class should
- * encapsulate all logic for fetching and manipulating the displayed data
- * (including sorting, pagination, and filtering).
- */
- export class Texe1DataSource extends DataSource<Texe1Item> {
- data: Texe1Item[] = EXAMPLE_DATA;
- paginator: MatPaginator | undefined;
- sort: MatSort | undefined;
- constructor() {
- super();
- }
- /**
- * Connect this data source to the table. The table will only update when
- * the returned stream emits new items.
- * @returns A stream of the items to be rendered.
- */
- connect(): Observable<Texe1Item[]> {
- if (this.paginator && this.sort) {
- // Combine everything that affects the rendered data into one update
- // stream for the data-table to consume.
- return merge(observableOf(this.data), this.paginator.page, this.sort.sortChange)
- .pipe(map(() => {
- return this.getPagedData(this.getSortedData([...this.data ]));
- }));
- } else {
- throw Error('Please set the paginator and sort on the data source before connecting.');
- }
- }
- /**
- * Called when the table is being destroyed. Use this function, to clean up
- * any open connections or free any held resources that were set up during connect.
- */
- disconnect(): void {}
- /**
- * Paginate the data (client-side). If you're using server-side pagination,
- * this would be replaced by requesting the appropriate data from the server.
- */
- private getPagedData(data: Texe1Item[]): Texe1Item[] {
- if (this.paginator) {
- const startIndex = this.paginator.pageIndex * this.paginator.pageSize;
- return data.splice(startIndex, this.paginator.pageSize);
- } else {
- return data;
- }
- }
- /**
- * Sort the data (client-side). If you're using server-side sorting,
- * this would be replaced by requesting the appropriate data from the server.
- */
- private getSortedData(data: Texe1Item[]): Texe1Item[] {
- if (!this.sort || !this.sort.active || this.sort.direction === '') {
- return data;
- }
- return data.sort((a, b) => {
- const isAsc = this.sort?.direction === 'asc';
- switch (this.sort?.active) {
- case 'name': return compare(a.name, b.name, isAsc);
- case 'id': return compare(+a.id, +b.id, isAsc);
- default: return 0;
- }
- });
- }
- }
- /** Simple sort comparator for example ID/Name columns (for client-side sorting). */
- function compare(a: string | number, b: string | number, isAsc: boolean): number {
- return (a < b ? -1 : 1) * (isAsc ? 1 : -1);
- }
该组件的texe1.component.ts文件
- import { AfterViewInit, Component, ViewChild } from '@angular/core';
- import { MatPaginator } from '@angular/material/paginator';
- import { MatSort } from '@angular/material/sort';
- import { MatTable } from '@angular/material/table';
- import { Texe1DataSource, Texe1Item } from './texe1-datasource';
- @Component({
- selector: 'app-texe1',
- templateUrl: './texe1.component.html',
- styleUrls: ['./texe1.component.css']
- })
- export class Texe1Component implements AfterViewInit {
- @ViewChild(MatPaginator) paginator!: MatPaginator;
- @ViewChild(MatSort) sort!: MatSort;
- @ViewChild(MatTable) table!: MatTable<Texe1Item>;
- dataSource: Texe1DataSource;
- /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
- displayedColumns = ['id', 'name','num1','num2'];
- constructor() {
- this.dataSource = new Texe1DataSource();
- }
- ngAfterViewInit(): void {
- this.dataSource.sort = this.sort;
- this.dataSource.paginator = this.paginator;
- this.table.dataSource = this.dataSource;
- }
- }
最后再app.component.html文件中进行显示。
- <app-texe1></app-texe1>
效果图:
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