Angular PrimeNG TreeTable Edit

Angular PrimeNG is an open-source framework with a rich set of native Angular UI components that are used for great styling and this framework is used to make responsive websites with very much ease. This article will show us how to use TreeTable Edit in Angular PrimeNG.

Angular PrimeNG TreeTable Edit enables Editing the Table cells in the TreeTable component. So using the Edit feature, we can easily edit the TreeTable component data easily.

Syntax:

<p-treeTable>
<p-treeTableCellEditor>
 <ng-template pTemplate="input">
  <input pInputText type="text" 
   [(ngModel)]="rowData[col.field]">
       </ng-template>
       <ng-template pTemplate="output">
        {{rowData[col.field]}}
       </ng-template>
   </p-treeTableCellEditor>
</p-treeTable>

Creating Angular application & Module Installation:

Step 1: Create an Angular application using the following command.

ng new appname

Step 2:  After creating your project folder i.e. appname, move to it using the following command.

cd appname

Step 3: Install PrimeNG in your given directory.

npm install primeng --save
npm install primeicons --save

Project Structure: It will look like the following:

Example 1: Below is a simple example that demonstrates the use of the Angular PrimeNG TreeTable Edit, here you have to use p-treeTableCellEditor to make the cells editable.

app.component.html

<h2 style="color: green">GeeksforGeeks</h2>
<h4>Angular PrimeNG TreeTable Edit</h4>

<p-treeTable
    [columns]="cols"
    [value]="tableData">
    <ng-template
        pTemplate="colgroup"
        let-columns>
        <colgroup>
            <col *ngFor=
            "let col of columns"/>
        </colgroup>
    </ng-template>

    <ng-template
        pTemplate="body"
        let-rowNode
        let-rowData="rowData"
        let-columns="columns">
        <tr>
            <td *ngFor=
               "let col of columns; let i = index"
                ttEditableColumn [ngClass]=
                "{'p-toggler-column': i === 0}">
                <p-treeTableToggler
                    [rowNode]="rowNode" *ngIf="i === 0">
                </p-treeTableToggler>

                <p-treeTableCellEditor>
                      <ng-template pTemplate="input">
                          <input pInputText type="text"
                          [(ngModel)]="rowData[col.field]"
                          [ngStyle]=
                          "{'width': i == 0 ? '90%': '100%'}">
                      </ng-template>

                      <ng-template pTemplate="output">
                          {{rowData[col.field]}}
                      </ng-template>
                </p-treeTableCellEditor>
            </td>
        </tr>
    </ng-template>
</p-treeTable>

app.component.ts

import { Component, OnInit } from '@angular/core';
import { NodeService } from './nodeservice';
import { TreeNode } from 'primeng/api';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
})

export class AppComponent {
  tableData: TreeNode[];
  cols: any[];
  constructor(private nodeService: NodeService) {}

  ngOnInit() {
    this.cols = [
      { field: 'name', header: 'First Name' },
      { field: 'age', header: 'Age' },
    ];
    this.tableData = [
      {
        data: {
          name: 'A',
          age: '40',
        },
        children: [
          {
            data: {
              name: 'B',
              age: '16',
            },
          },
          {
            data: {
              name: 'C',
              age: '14',
            },
          },
        ],
      },
      {
        data: {
          name: 'D',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'E',
              age: '20',
            },
          },
          {
            data: {
              name: 'F',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'G',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'H',
              age: '20',
            },
          },
          {
            data: {
              name: 'I',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'J',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'K',
              age: '20',
            },
          },
          {
            data: {
              name: 'L',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'M',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'N',
              age: '20',
            },
          },
          {
            data: {
              name: 'O',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'P',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'Q',
              age: '20',
            },
          },
          {
            data: {
              name: 'R',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'S',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'T',
              age: '20',
            },
          },
          {
            data: {
              name: 'U',
              age: '24',
            },
          },
        ],
      },
    ];
  }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { NodeService } from './nodeservice';
import { TreeTableModule } from 'primeng/treetable';
import { ButtonModule } from 'primeng/button';
import { InputTextModule } from 'primeng/inputtext';

@NgModule({
  imports: [
      BrowserModule,
      BrowserAnimationsModule,
      TreeTableModule,
      ButtonModule,
      InputTextModule,
      HttpClientModule,
      FormsModule,
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [NodeService],
})

export class AppModule {}

Output:

Example 2: Below is another example that illustrates the use of Angular PrimeNG TreeTable Edit. We can also disable the editing of the table cell using the disabled property.

app.component.html

<h2 style="color: green">GeeksforGeeks</h2>
<h4>Angular PrimeNG TreeTable Editing</h4>

<p-treeTable [columns]="cols" [value]="tableData">
    <ng-template pTemplate="colgroup" let-columns>
        <colgroup>
            <col *ngFor="let col of columns" />
        </colgroup>
    </ng-template>

    <ng-template pTemplate="header" let-columns>
        <tr>
            <th *ngFor="let col of columns">
                {{ col.header }}
            </th>
        </tr>
    </ng-template>

    <ng-template
        pTemplate="body"
        let-rowNode
        let-rowData="rowData"
        let-columns="columns">
        <tr>
            <td
                *ngFor="let col of columns; let i = index"
                ttEditableColumn [ngClass]=
                "{'p-toggler-column': i === 0 }">
                <p-treeTableToggler
                    [rowNode]="rowNode"
                    *ngIf="i === 0">
                </p-treeTableToggler>

                <p-treeTableCellEditor>
                    <ng-template pTemplate="input">
                        <input
                            pInputText
                            type="text"
                            disabled
                            [(ngModel)]="rowData[col.field]"
                            [ngStyle]=
                            "{ width: i == 0 ? '90%' : '100%' }"
                        />
                    </ng-template>

                    <ng-template
                        pTemplate="output">
                        {{ rowData[col.field] }}
                    </ng-template>
                </p-treeTableCellEditor>
            </td>
        </tr>
    </ng-template>
</p-treeTable>

app.component.ts

import { Component, OnInit } from '@angular/core';
import { NodeService } from './nodeservice';
import { TreeNode } from 'primeng/api';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
})

export class AppComponent {
  tableData: TreeNode[];
  cols: any[];
  constructor(private nodeService: NodeService) {}

  ngOnInit() {
    this.cols = [
      { field: 'name', header: 'First Name' },
      { field: 'age', header: 'Age' },
    ];
    this.tableData = [
      {
        data: {
          name: 'David',
          age: '40',
        },
        children: [
          {
            data: {
              name: 'Nathan',
              age: '16',
            },
          },
          {
            data: {
              name: 'Shane',
              age: '14',
            },
          },
        ],
      },
      {
        data: {
          name: 'Warner',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'Michelle',
              age: '20',
            },
          },
          {
            data: {
              name: 'Charlie',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'Max',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'Michelle',
              age: '20',
            },
          },
          {
            data: {
              name: 'Charlie',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'Willy',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'Michelle',
              age: '20',
            },
          },
          {
            data: {
              name: 'Charlie',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'Miley',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'Michelle',
              age: '20',
            },
          },
          {
            data: {
              name: 'Charlie',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'Sam',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'Michelle',
              age: '20',
            },
          },
          {
            data: {
              name: 'Charlie',
              age: '24',
            },
          },
        ],
      },
      {
        data: {
          name: 'James',
          age: '55',
        },
        children: [
          {
            data: {
              name: 'Michelle',
              age: '20',
            },
          },
          {
            data: {
              name: 'Charlie',
              age: '24',
            },
          },
        ],
      },
    ];
  }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { NodeService } from './nodeservice';
import { TreeTableModule } from 'primeng/treetable';
import { ButtonModule } from 'primeng/button';
import { InputTextModule } from 'primeng/inputtext';

@NgModule({
  imports: [
      BrowserModule,
      BrowserAnimationsModule,
      TreeTableModule,
      ButtonModule,
      InputTextModule,
      HttpClientModule,
      FormsModule,
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [NodeService],
})

export class AppModule {}

Output:

Reference: https://primefaces.org/primeng/treetable/filter