Angular 15 Material Table with Delete Row Functionality

Hello to all, welcome to therichpost.com. In this post, I will tell you, Angular 15 Material Table with Delete Row Functionality.

Guy’s Angular 15 came and if you are new in Angular 15 then please check below links:

1. Angular 15 Tutorials
2. Angular Free Templates

Here is the working code snippet and please follow carefully:

1. Here are the basics commands to install angular 15 on your system:

npm install -g @angular/cli 

ng new angularmaterial//Create new Angular Project

$ cd angularmaterial// Go inside the Angular Project Folder

ng serve --open // Run and Open the Angular Project

http://localhost:4200/ // Working Angular Project Url

2. After done with above, you need to run below command to add @angular/material into your angular 15 application:

ng add @angular/material

3. Now you need to add below code into your src/app/app.module.ts file:

...
import {  MatTableModule } from '@angular/material/table';
import {  MatPaginatorModule } from '@angular/material/paginator';
import {  MatButtonModule } from '@angular/material/button'


@NgModule({
 ...
  imports: [
    ...
    MatPaginatorModule,
    MatTableModule,
    MatButtonModule
   
  ],

4. Now you need to add below code into your src/app/app.component.ts file:

import { Component, OnInit, ViewChild } from '@angular/core';
import {MatPaginator} from '@angular/material/paginator';
import {MatTableDataSource} from '@angular/material/table';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  displayedColumns: string[] = ['position', 'name', 'weight', 'symbol', "deldetails"];
  dataSource = new MatTableDataSource<PeriodicElement>(ELEMENT_DATA);

  @ViewChild(MatPaginator, {static: true}) paginator: MatPaginator;
//delete row function
  delRecord(i: any)
  {
      this.dataSource.data.splice(i, 1);
      this.dataSource._updateChangeSubscription(); // <-- Refresh the datasource
    
  }

  ngOnInit() {
    this.dataSource.paginator = this.paginator;
  }
  
}
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'},
  {position: 11, name: 'Sodium', weight: 22.9897, symbol: 'Na'},
  {position: 12, name: 'Magnesium', weight: 24.305, symbol: 'Mg'},
  {position: 13, name: 'Aluminum', weight: 26.9815, symbol: 'Al'},
  {position: 14, name: 'Silicon', weight: 28.0855, symbol: 'Si'},
  {position: 15, name: 'Phosphorus', weight: 30.9738, symbol: 'P'},
  {position: 16, name: 'Sulfur', weight: 32.065, symbol: 'S'},
  {position: 17, name: 'Chlorine', weight: 35.453, symbol: 'Cl'},
  {position: 18, name: 'Argon', weight: 39.948, symbol: 'Ar'},
  {position: 19, name: 'Potassium', weight: 39.0983, symbol: 'K'},
  {position: 20, name: 'Calcium', weight: 40.078, symbol: 'Ca'},
];

5. Now you need to add below code into src/app/app.component.html file:

<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>

    <!-- Del Details -->
    <ng-container matColumnDef="deldetails">
      <th mat-header-cell *matHeaderCellDef> Action </th>
      <td mat-cell *matCellDef="let i = index"> 
        <button mat-raised-button color="primary" (click)="delRecord(i)">Delete</button> </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></mat-paginator>
</div>

6. Now you need to add below code into src/app/app.component.css file:

table {width: 100%;}

In the end, don’t forgot to run ng serve command. If you have any query then do comment below.

Note: Friends, I just tell the basic setup and things, you can change the code according to your requirements. For better understanding please watch the above video.

I will appreciate that if you will tell your views for this post. Nothing matters if your views will be good or bad.

Jassa

Thank you.