Update class object with input bindings

Question

I have a list of inputs which are bound to an object in my component. I want to be able to change the values in the input boxes and have them change in the associated object - currently they are not.

Here are my files:

home.component.ts

export class HomeComponent implements OnInit, OnDestroy {

  consumerProfile = {
    'firstName': 'Joe',
    'lastName': 'Soap',
    'gender': 'Male',
    'profileCompleteness': 100,
    'profilePicUrl': 'https://www.shareicon.net/data/128x128/2016/09/15/829444_man_512x512.png',
    'contactInfo': {
      'mobile': '0871234567',
      'landline': '018321234',
      'email': 'email@email.com'
    },
    'dateOfBirth': '01/01/1970',
    'address': {
      'country': 'Ireland',
      'city': 'Dublin',
      'addressTwo': 'AddressTwo',
      'postcode': 'D01 1234',
      'county': 'Dublin',
      'addressThree': 'addressThree',
      'addressOne': 'AddressOne`'
    }
  };

  updateConsumer() {
    console.log('Update Consumer');
    console.log(this.consumerProfile); //Object hasn't been updated despite changes to input fields
  }
}

home.component.html

<button class="btn btn-info" *ngIf="isAuthorized" (click)="updateConsumer()">Update Consumer</button>
<br>
<br>
<input type="text" name="profileName" [ngModel]="consumerProfile.firstName"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.lastName"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.gender"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.profilePicUrl"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.profileCompleteness"><br><br>

<input type="text" name="profileName" [ngModel]="consumerProfile.contactInfo.email"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.contactInfo.landline"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.contactInfo.landline"><br><br>

<input type="text" name="profileName" [ngModel]="consumerProfile.dateOfBirth"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.address.addressOne"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.address.addressTwo"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.address.addressThree"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.address.city"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.address.county"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.address.country"><br><br>
<input type="text" name="profileName" [ngModel]="consumerProfile.address.postcode"><br><br>

Answer 1

By using property binding (just square brackets: [ngModel]), you are setting one way binding from your model to template. You need to use two way binding to reflect the changes in your model (consumerProfile object). To do so, change [ngModel] to [(ngModel)] (add parens inside square brackets).

From angular docs:

You often want to both display a data property and update that property when the user makes changes.

On the element side that takes a combination of setting a specific element property and listening for an element change event.

Angular offers a special two-way data binding syntax for this purpose, [(x)]. The [(x)] syntax combines the brackets of property binding, [x], with the parentheses of event binding, (x).

https://angular.io/guide/template-syntax#two-way-binding---