Angular Material Table-如何保存数据？答案

【问题标题】：Angular Material Table- how to save data?Angular Material Table-如何保存数据？
【发布时间】：2021-11-12 00:55:39
【问题描述】：

我有基本的角材料表。单击按钮时是否有可能保存表格中显示的数据（我的意思是保存每一行数据）？如果是，我该怎么做？如何获取每一行数据？我想将每一行数据保存为一个对象并将其推送到一个数组中。

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

    <!-- Position Column -->
    <ng-container matColumnDef="position">
      <th mat-header-cell *matHeaderCellDef> No. </th>
      <td mat-cell *matCellDef="let element"> {{element.position}} </td>
    </ng-container>

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

    <!-- Weight Column -->
    <ng-container matColumnDef="weight">
      <th mat-header-cell *matHeaderCellDef> Weight </th>
      <td mat-cell *matCellDef="let element"> {{element.weight}} </td>
    </ng-container>

    <!-- Symbol Column -->
    <ng-container matColumnDef="symbol">
      <th mat-header-cell *matHeaderCellDef> Symbol </th>
      <td mat-cell *matCellDef="let element"> {{element.symbol}} </td>
    </ng-container>

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

  <mat-paginator [pageSizeOptions]="[5, 10, 20]"
                 showFirstLastButtons 
                 aria-label="Select page of periodic elements">
  </mat-paginator>
</div>
<button mat-raised-button color="warn" (click)="saveData()">Warn</button>

【问题讨论】：

你打算把它保存在哪里？
我想将它保存在一个数组中（因为我需要将它发送到后端）。不知何故，每一行都是一个将被推送到数组的对象。但我正在寻找任何可能性
您可以在dataSource 中找到数据。它应该已经是一个对象数组（或者可能是一个MatTableDataSource，在这种情况下您可以在dataSource.data 中找到数据）。

标签： javascript html angular typescript angular-material

【解决方案1】：

codeSolution:https://stackblitz.com/edit/angular-wn7vwb-su3tun?file=app/table-basic-example.ts

这可能对你有帮助

html

<table mat-table [dataSource]="dataSource" class="mat-elevation-z8">
  <!-- Position Column -->
  <ng-container matColumnDef="position">
    <th mat-header-cell *matHeaderCellDef>No.</th>
    <td mat-cell *matCellDef="let element">{{element.position}}</td>
  </ng-container>

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

  <!-- Weight Column -->
  <ng-container matColumnDef="weight">
    <th mat-header-cell *matHeaderCellDef>Weight</th>
    <td mat-cell *matCellDef="let element">{{element.weight}}</td>
  </ng-container>

  <!-- Symbol Column -->
  <ng-container matColumnDef="symbol">
    <th mat-header-cell *matHeaderCellDef>Symbol</th>
    <td mat-cell *matCellDef="let element">{{element.symbol}}</td>
  </ng-container>

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

<button mat-raised-button color="warn" (click)="saveData()">Warn</button>

import { Component } from '@angular/core';
export interface PeriodicElement {
  name: string;
  position: number;
  weight: number;
  symbol: string;
}
const ELEMENT_DATA: PeriodicElement[] = [
  { 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' },
  { 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' },
  { 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' },
];

@Component({
  selector: 'table-basic-example',
  styleUrls: ['table-basic-example.css'],
  templateUrl: 'table-basic-example.html',
})
export class TableBasicExample {
  displayedColumns = ['position', 'name', 'weight', 'symbol'];
  dataSource = ELEMENT_DATA;
  saveData() {
    console.log(this.dataSource);
  }
}

【讨论】：