Angular2 log values after dynamically adding form fields - forms

Question

I am trying to console log the values of each object in the choices array. I am currently able to log the objects in the choices array but all of the values are empty. I am seeing timeZonePicker: "", startTimeInput: "", endTimeInput: "" for each object. I am able to add and remove from the choices array and log the key but I cannot log the value. I have tried a lot of different things but still unsuccessful.
<div class="container">
<div class="row">
<div class="col-md-9">
<div *ngFor="let choice of choices; trackBy=customTrackBy" class="form-inline">
<select [ngModel]="choice.timeZonePicker" class="form-control" id="timeZonePicker">
<option *ngFor="let timeZone of timeZones" [selected]="timeZone.chosenTimeZone == '(GMT) Western Europe Time, London, Lisbon, Casablanca, Greenwich'">{{ timeZone.chosenTimeZone }}</option>
</select>
<input [ngModel]="choice.startTimeInput" type="time" class="form-control" id="startTimeInput">
<input [ngModel]="choice.endTimeInput" type="time" class="form-control" id="endTimeInput">
</div> <!-- end form field div -->
<div class="container">
<button (click)="onSubmit()" class="btn btn-primary">Submit</button>
</div>
<div class="container">
<button class="pull-left btn btn-success" (click)="addNewChoice()">Add Field</button>
<button class="pull-left btn btn-danger" (click)="removeChoice()">Remove Field</button>
</div>
</div> <!-- end col-md-9 -->
</div> <!-- end row -->
</div> <!-- end container -->
Below is the component.
export class TimeZonesComponent {
constructor(){}
timeZones = [
{ val: -12, chosenTimeZone: '(GMT -12:00) Eniwetok, Kwajalein'},
{ val: -11, chosenTimeZone: '(GMT -11:00) Midway Island, Samoa'},....];
choices = [
{
timeZonePicker: '',
startTimeInput: '',
endTimeInput: ''
},
{
timeZonePicker: '',
startTimeInput: '',
endTimeInput: ''
}];
addNewChoice(){
var dataObj = {
timeZonePicker: '',
startTimeInput: '',
endTimeInput: ''
};
this.choices.push(dataObj);
}
removeChoice(){
var lastItem = this.choices.length - 1;
this.choices.splice(lastItem);
console.log(this.choices);
}
onSubmit(){
console.log(this.choices);
}
customTrackBy(index: number, obj: any){
return index;
}
}
I really appreciate any help.

Answer 1

I found out my error. I needed to use trackBy (which I wasn't initially) and [(ngModel]). I was only using one way binding but I needed two way. If anyone would like to see the code for learning, just comment and I will happily share it.