Angular 4 remove required validator conditionally

In Angular 4 app I have a form model like this:

this.form = this._fb.group({
title: ['', [Validators.required, Validators.minLength(3), Validators.maxLength(50)]],
description: ['', [Validators.required, Validators.minLength(3)]]
});


Now what I want is to remove dynamically only the required validator from the control validators array. Something like this:

saveDraft() {
this.form.controls['title'].removeValidator('required'); //Just a fake implementation for demonstration
}


This question is not the duplicate of the mentioned question. My case is different I just want to remove the required validator unknowingly the other ones.

Continue reading...