I'm using reactive forms and I would like to add/remove a field of my form when I click in a button, like this example (its a prototipe of my desire):
Thats mean, when I click in the + button, another select with the same field will appear. When I click in -, the field will be removed
From https://www.udemy.com/the-complete-guide-to-angular-2/learn/v4/overview
You can follow the same pattern
<div formArrayName="hobbies">
<h4>Your Hobbies</h4>
<button
class="btn btn-default"
type="button"
(click)="onAddHobby()">Add Hobby</button>
<div
class="form-group"
*ngFor="let hobbyControl of signupForm.get('hobbies').controls; let i = index">
<input type="text" class="form-control" [formControlName]="i">
</div>
</div>
form.ts
this.signupForm = new FormGroup({
'userData': new FormGroup({
'username': new FormControl(null, [Validators.required, this.forbiddenNames.bind(this)]),
'email': new FormControl(null, [Validators.required, Validators.email], this.forbiddenEmails)
}),
'gender': new FormControl('male'),
'hobbies': new FormArray([])
});
onAddHobby() {
const control = new FormControl(null, Validators.required);
(<FormArray>this.signupForm.get('hobbies')).push(control);
}
