Попробуем проанализировать форму.
Вы ожидаете ниже как конечное значение формы
{
"formList": [
{
"firstName": "",
"email": ""
},
{
"firstName": "",
"email": ""
},
{
"firstName": "",
"email": ""
}
]
}
В приведенном выше мы имеем
form => FormGroup : form
formList => FormArray : formList
1 => FormControl with value {email: '', firstName} : 1
2 => FormControl with value {email: '', firstName} : 2
3 => FormControl with value {email: '', firstName} : 3
Итак, в форме у нас должна быть эта структура, чтобы форма работала.
<form [formGroup]="signupForm" (ngSubmit)="submit()">
<ng-container formArrayName='formList'>
<div *ngFor="let fg of formList.controls; let infoIndex = index">
<app-profile-form [formControlName]="infoIndex" [formIndex]="infoIndex"></app-profile-form>
</div>
</ng-container>
<button>Sign Up</button>
<button type="button" (click)="resetForm()">Reset</button>
</form>
Некоторые другие поправки будут включать
Изменение formListGroupDef
return this.formBuilder.control(
{
firstName: "",
email: ""
},
Validators.required
);
SignUpForm
this.signupForm = this.formBuilder.group({
formList: this.formBuilder.array([
this.formListGroupDef()
])
});
Я также внес несколько изменений в ваш ProfileFormComponent
export class ProfileFormComponent implements ControlValueAccessor, OnDestroy {
@Input() formIndex: any;
destroyed$ = new Subject<any>();
form: FormGroup;
get firstNameControl() {
return this.form.controls.firstName;
}
get emailControl() {
return this.form.controls.email;
}
constructor(private formBuilder: FormBuilder) {
this.form = this.formBuilder.group({
firstName: ["", Validators.required],
email: ["", Validators.required]
});
this.form.valueChanges.pipe(
filter(({firstName, email}) => firstName.length > 0 || email.length > 0 ),
takeUntil(this.destroyed$)
).subscribe(value => {
this.onChange(value);
this.onTouched();
});
}
ngOnDestroy() {
this.destroyed$.next();
}
onChange: any = () => {};
onTouched: any = () => {};
registerOnChange(fn) {
this.onChange = fn;
}
writeValue(value) {
if (value) {
this.form.patchValue(value);
}
}
registerOnTouched(fn) {
this.onTouched = fn;
}
validate(_: FormControl) {
return this.form.valid ? null : { profile: { valid: false } };
}
Посмотреть демо
person
Owen Kelvin
schedule
01.05.2021