Using formControlName with an Ionic2 checkbox allows for seamless integration of

Question

Using formControlName with an Ionic2 checkbox allows for seamless integration of

Currently facing an obstacle with checkboxes in ionic2.

Here is how I am using the checkbox:

<ion-item>
    <ion-label>Agree</ion-label>
    <ion-checkbox color="dark" id="agree" name='agree' class="form-control" formControlName="agree" [checked]="false" ></ion-checkbox>
  </ion-item>

In my .ts file, I am accessing its value like this:

console.log(this.timelogForm.controls['agree'].value);

I want it to be unchecked by default.

Main issues include :

When using formControlName="agree" it automatically gets checked.
The value in .ts file only reflects if the checkbox has been clicked. I want to return true if checked and false if not clicked upon submission.

Any assistance would be appreciated.

angular typescript ionic2

Answer 1

Answer №1

After some troubleshooting, I managed to find a solution which may be beneficial to others.

I specifically assigned the value as false using the following code snippet:

this.loginFormGroup = formBuilder.group({
        'agree': ['false'],
    });

Hopefully this can assist someone in need.

Answer 2

After some troubleshooting, I managed to find a solution which may be beneficial to others.

I specifically assigned the value as false using the following code snippet:

this.loginFormGroup = formBuilder.group({
        'agree': ['false'],
    });

Hopefully this can assist someone in need.

Answer 3

Answer №2

testing.ts

setupForm(){
    this.userForm = this.formBuilder.group({
        agreeTerms: ['', Validators.requiredTrue]
    });
}

testing.html

<form [formGroup]="userForm">
    <ion-item class="center">
        <ion-checkbox formControlName="agreeTerms" checked="false"></ion-checkbox>
        <ion-label>Agree to the general terms</ion-label>
    </ion-item>
    <ion-item class="button" lines="none">
        <ion-button color="primary" [disabled]="userForm.invalid" 
        (click)="submitForm()">
        Submit
        </ion-button>
    </ion-item>
</form>

Answer 4

testing.ts

setupForm(){
    this.userForm = this.formBuilder.group({
        agreeTerms: ['', Validators.requiredTrue]
    });
}

testing.html

<form [formGroup]="userForm">
    <ion-item class="center">
        <ion-checkbox formControlName="agreeTerms" checked="false"></ion-checkbox>
        <ion-label>Agree to the general terms</ion-label>
    </ion-item>
    <ion-item class="button" lines="none">
        <ion-button color="primary" [disabled]="userForm.invalid" 
        (click)="submitForm()">
        Submit
        </ion-button>
    </ion-item>
</form>

Answer 5

Answer №3

Everything seems to be in order. I trust this information will be beneficial for you.

sample.ts

import { Component } from '@angular/core';
import { NavController, Events } from 'ionic-angular';
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
@Component({
    templateUrl: 'sample.html'
})
export class sample implements OnInit {
    formGroup: FormGroup;
    emailField: any;
    constructor(private _navCtrl: NavController, private _fb: FormBuilder) { }
    ngOnInit() {
        this.formGroup = this._fb.group({
            checkbox: ['false', Validators.required]
        });
    }
}

sample.html

<ion-item>
    <ion-label>Jon Snow</ion-label>
    <ion-checkbox color="dark" formControlName="checkbox" checked="false"></ion-checkbox>
</ion-item>

Answer 6

Everything seems to be in order. I trust this information will be beneficial for you.

sample.ts

import { Component } from '@angular/core';
import { NavController, Events } from 'ionic-angular';
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
@Component({
    templateUrl: 'sample.html'
})
export class sample implements OnInit {
    formGroup: FormGroup;
    emailField: any;
    constructor(private _navCtrl: NavController, private _fb: FormBuilder) { }
    ngOnInit() {
        this.formGroup = this._fb.group({
            checkbox: ['false', Validators.required]
        });
    }
}

sample.html

<ion-item>
    <ion-label>Jon Snow</ion-label>
    <ion-checkbox color="dark" formControlName="checkbox" checked="false"></ion-checkbox>
</ion-item>

Answer 7

Answer №4

When working with Ionic standalone components, I made the mistake of forgetting to import IonCheckbox in my module.

Here is the code snippet:

<form [formGroup]="signUpForm" class="auth-form">
.
.
    <ion-item lines="none" mode="ios">
        <ion-checkbox name="checkbox" mode="md" slot="start" formControlName="termCondition"></ion-checkbox>
        <ion-label>Accept</ion-label>
    </ion-item>
.
.
</form>

This is the TypeScript code for setting up the form group:

signUpForm: FormGroup = new FormGroup({
    termCondition: new FormControl<boolean>(false),
});

Be sure to remember to add the following import statement in your module.ts file:

import "IonCheckbox" in ngModule, from @ionic/angular/standalone

Answer 8

When working with Ionic standalone components, I made the mistake of forgetting to import IonCheckbox in my module.

Here is the code snippet:

<form [formGroup]="signUpForm" class="auth-form">
.
.
    <ion-item lines="none" mode="ios">
        <ion-checkbox name="checkbox" mode="md" slot="start" formControlName="termCondition"></ion-checkbox>
        <ion-label>Accept</ion-label>
    </ion-item>
.
.
</form>

This is the TypeScript code for setting up the form group:

signUpForm: FormGroup = new FormGroup({
    termCondition: new FormControl<boolean>(false),
});

Be sure to remember to add the following import statement in your module.ts file:

import "IonCheckbox" in ngModule, from @ionic/angular/standalone

Using formControlName with an Ionic2 checkbox allows for seamless integration of

Answer №1

Answer №2

testing.ts

testing.html

Answer №3

Answer №4

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