Validating form css - ionic3

I already made an apps in angular2 + bootstrap, and the validating process was very easy.
I don’t find ressource on how to do it in ionic3
I consider using Validator from @angular/form for the validation itself

My question is:
There is a out of the box way, in ionic, to highlight wrong inputs?

Optional question:
Validator is it the good way to proceed (using formGroup without using ngModel who seam convenient?)

It is still Angular under the hood, so those solutions will work just fine.