Method to set value and update validity of form control

Question

I am wondering if there is any method to set value and update validity of a control of a form. Given the following:

this.updateForm = this._formBuilder.group({
    user: ['',Validators.required]     
});

I have some directive which has on change trigger, that triggers the following:

changeUserSelection(value){
    this.updateForm.controls['user'].value = value // doesnt trigger validation?
}

And I am wondering how I can set the value, and trigger validation of this field. Doing this my way, doesnt trigger validation.

Thanks

Answer 1

You should use the updateValue method instead:

changeUserSelection(value){
  this.updateForm.controls['user'].updateValue(value);
}