Angular PrimeNG PickList Multiple Selection

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. It provides a lot of templates, components, theme design, an extensive icon library, and much more. In this article, we will see the Angular PrimeNG PickList Multiple Selection.

The PickList Component is used to reorder items between different categories and lets us pick and select items. It acts as a drag-and-drop component with two tables and contents in it.

Multiple Selection is used to select multiple items in the picklist at once. This is done by disabling the property called metaKeySelection . When we make metaKeySelection false, then multiple selections are enabled

Syntax:

<p-pickList 
    sourceHeader="...." 
    targetHeader="...."
    [metaKeySelection]="false" 
>

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
npm install @angular/cdk --save

Project Structure: It will look like the following:

Steps to run the application: Run the below command to see the output

ng serve --save

Example 1: Below is the example code that illustrates the use of Angular PrimeNG Picklist Multiple Selection. In this example, we will enable multiple selections. You will be able to select multiple items at once in the picklist.

• app.component.html:

HTML

<h1 style="color: green;">
    GeeksforGeeks
</h1>
<h3>
  Angular PrimeNG Picklist Multiple Selection
</h3>
<p-pickList
    ="sourceTutorials"
    [target]="targetTutorials"
    sourceHeader="Tutorials Available in GeeksforGeeks"
    targetHeader="Selected Tutorials from GeeksforGeeks"
    [dragdrop]="true"
    [sourceStyle]="{ height: '500px' ,background:'pink'}"
    [targetStyle]="{ height: '500px',background:'yellow' }"
    [metaKeySelection]="false">
    <ng-template let-tutorial pTemplate="item">
        <div>
            <div style="background:'green';color:'white'">
                <h5 class="mb-2">
                    {{ tutorial.title }}
                </h5>
                <h5>{{ tutorial.category }}</h5>
                <h6 class="mb-2">
                    Rating: {{ tutorial.rating }}
                </h6>
            </div>
        </div>
    </ng-template>
</p-pickList>

• app.component.ts:

Javascript

import { Component } from "@angular/core";
import { PrimeNGConfig } from "primeng/api";

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

export class AppComponent {
    sourceTutorials: Tutorial[] = [];
    targetTutorials: Tutorial[] = [];

    constructor(private primengConfig: PrimeNGConfig) {}

    ngOnInit() {
        this.sourceTutorials = [
            {
                title: "Queue",
                category: "Data Structure",
                rating: 8
            },
            {
                title: "Circularly LinkedList",
                category: "Data Structure",
                rating: 1
            },
            {
                title: "Doubly LinkedList",
                category: "Data Structure",
                rating: 3
            },

            {
                title: "Red Black Tree",
                category: "Data Structure",
                rating: 9
            },
            {
                title: "Breadth First Search",
                category: "Graph",
                rating: 6
            },
            {
                title: "Floyd's Cycle",
                category: "Algorithm",
                rating: 7
            },
            {
                title: "Travelling Salesman Problem",
                category: "Algorithm",
                rating: 4
            },
            {
                title: "Bellman Ford",
                category: "Graph",
                rating: 8
            },
            {
                title: "KMP Algorithm",
                category: "String",
                rating: 10
            }
        ];
        this.targetTutorials = [];
        this.primengConfig.ripple = true;
    }
}
export interface Tutorial {
    category?: string;
    title?: string;
    rating?: number;
}

• app.module.ts:

Javascript

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 { PickListModule } from "primeng/picklist";

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        PickListModule,
        HttpClientModule,
        FormsModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})

export class AppModule {}

Output:

Example 2: Below is another example code that illustrates the use of Angular PrimeNG Picklist Multiple Selection. In this example, we will enable multiple selections. You won’t be able to select multiple items at once in the picklist.

• app.component.html:

HTML

<h1 style="color: green;">
    GeeksforGeeks
</h1>
<h3>
  Angular PrimeNG Picklist Multiple Selection
</h3>
<p-pickList
    ="sourceTutorials"
    [target]="targetTutorials"
    sourceHeader="Tutorials Available in GeeksforGeeks"
    targetHeader="Selected Tutorials from GeeksforGeeks"
    [dragdrop]="true"
    [sourceStyle]="{ height: '500px' ,background:'pink'}"
    [targetStyle]="{ height: '500px',background:'yellow' }"
    [metaKeySelection]="true">
    <ng-template let-tutorial pTemplate="item">
        <div>
            <div style="background:'green';color:'white'">
                <h5 class="mb-2">
                    {{ tutorial.title }}
                </h5>
                <h5>{{ tutorial.category }}</h5>
                <h6 class="mb-2">
                    Rating: {{ tutorial.rating }}
                </h6>
            </div>
        </div>
    </ng-template>
</p-pickList>

• app.component.ts:

Javascript

import { Component } from '@angular/core';
import { PrimeNGConfig } from 'primeng/api';

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

export class AppComponent {
    sourceTutorials: Tutorial[]=[];
    targetTutorials: Tutorial[]=[];

    constructor(private primengConfig: PrimeNGConfig) { }

    ngOnInit() {
        this.sourceTutorials = [
            {
                title: 'Queue',
                category: 'Data Structure',
                rating: 8,
            },
            {
                title: 'Circularly LinkedList',
                category: 'Data Structure',
                rating: 1,
            },
            {
                title: 'Doubly LinkedList',
                category: 'Data Structure',
                rating: 3,
            },

            {
                title: 'Red Black Tree',
                category: 'Data Structure',
                rating: 9,
            },
            {
                title: 'Breadth First Search',
                category: 'Graph',
                rating: 6,
            },
            {
                title: "Floyd's Cycle",
                category: 'Algorithm',
                rating: 7,
            },
            {
                title: 'Travelling Salesman Problem',
                category: 'Algorithm',
                rating: 4,
            },
            {
                title: 'Bellman Ford',
                category: 'Graph',
                rating: 8,
            },
            {
                title: 'KMP Algorithm',
                category: 'String',
                rating: 10,
            },
        ];
        this.targetTutorials = [];
        this.primengConfig.ripple = true;
    }


}
export interface Tutorial {
    category?: string;
    title?: string;
    rating?: number;
}

• app.module.ts:

Javascript

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 { PickListModule } from "primeng/picklist";

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        PickListModule,
        HttpClientModule,
        FormsModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})

export class AppModule {}

Output:

Reference: http://primefaces.org/primeng/picklist