Ember.js Helper init() Method

import Route from '@ember/routing/route';
import Ember from 'ember';

let Student = Ember.Object.extend({
    // these will be supplied by `create`
    firstName: null,
    lastName: null,

    init() {
        alert(`${this.get('firstName')} is Listed`);
    },
    fullName: Ember.computed('firstName', 'lastName', function () {
        return `${this.firstName} ${this.lastName}`;
    }),

});
export default class PartyRoute extends Route {
    students = [{
        Name: 'Balit',
        skill: 'Python',
        Id: 'stu2',
    },
    {
        Name: 'Permu',
        skill: 'PHP',
        Id: 'stu0',
    },
    {
        Name: 'Sam',
        skill: 'R',
        Id: 'stu1',
    },
    {
        Name: 'Pokhu',
        skill: 'JavaScript',
        Id: 'stu3',
    },
    {
        Name: 'Tanu',
        skill: 'Java',
        Id: 'stu4',
    },
    {
        Name: 'Arabh',
        skill: 'c++',
        Id: 'stu5',
    }];

    item3 = 'Gulshan';
    item2 = 'Verma';
    item1 = 'stu6';
    item4 = 'Sam';
    model() {
        return this.students;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('students', this.students);
        controller.set('temp', this.temp);
        controller.set('item1', this.item1);
        controller.set('item2', this.item2);
        controller.set('item3', this.item3);
        controller.set('item4', this.item4);
    }
}

import Controller from '@ember/controller';
import { action, find } from '@ember/object';
import Ember from 'ember';

let Student = Ember.Object.extend({
    // these will be supplied by `create`
    Name: null,
    skill: null,
    id: null,

    init() {
        alert(`${this.get('Name')} is Listed`);
    },
    fullName: Ember.computed('firstName', 'lastName', function () {
        return `${this.firstName} ${this.lastName}`;
    }),

    Changed: Ember.observer('fullName', function () {
        console.log(`fullName changed to: ${this.fullName}`);
    }),
});

export default class Array2Controller extends Controller {

    @action
    print(data1, data2, data3) {
        let temp = Student.create({
            Name: data1,
            skill: data2,
            Id: data3
        });
        this.students.addObject(temp);
    }
    @action
    remove(data1) {
        let temp = this.students.find((item) => item.Name == data1)
        this.students.set('[]', this.students.without(temp));
    }
}

import Route from '@ember/routing/route';

export default class FruitsRoute extends Route {
    fruits = [
        {
            'name': 'Lady Finger',
            'isFruit': false,
            'color': 'green'
        },
        {
            'name': 'Brinjal',
            'isFruit': false,
            'color': 'purple'
        },
        {
            'name': 'Apple',
            'isFruit': true,
            'color': 'red'
        },
        {
            'name': 'Grapes',
            'isFruit': true,
            'color': 'green'
        },
        {
            'name': 'Mango',
            'isFruit': true,
            'color': 'yellow'
        },
        {
            'name': 'Watermelon',
            'isFruit': true,
            'color': 'red'
        },
        {
            'name': 'Orange',
            'isFruit': true,
            'color': 'orange'
        }
    ];
    item2;
    item3;

    model() {
        this.set('[]', this.fruits)
        return this;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('fruits', this.fruits);
    }
}

import Ember from "ember";
import { addObject, isAny, isEvery } from "@ember/array";
import EmberObject from '@ember/object';

const Fruit = EmberObject.extend({
    init() {
        alert(`${this.get('name')} is Added in list`);
    }
});

export default Ember.Controller.extend({
    actions: {
        removeItem(data) {
            let temp = this.fruits.find((item) => item.color == data)
            this.fruits.set('[]', this.fruits.without(temp));
        },
        insertItem(data, data1, data2) {
            let temp = Fruit.create({
                name: data,
                isFruit: data1,
                color: data2
            });
            this.fruits.addObject(temp);
        }
    },
});