angular 2: get FormGroup by FormControl

Question

can i get the FormGroup - the parent of the FormControl that i have? like this:

    onBlur(formControl: FormControl) {
    var formGroup = formControl.parent // a FormGroup has the FormControl
    if (formControl.dirty) {

        console.log(formControl);
    }

}

Answer 1

I currently have angular 5, but I'm sure on angular 4 it also worked like this:

formControl.parent

In my code, for example, I'm getting other control (by name) from the same group with:

formControl.parent.get(neighbourName)

Answer 2

You can't access the parent of FormControl (see: https://github.com/angular/angular/issues/5635). But you can access the parent using Model-Driven Forms.

 constructor(private fb: FormBuilder) {

 this.form = fb.group({
   name: [],
   address: fb.group({
     city: ['', Validators.required],
     street: ['', Validators.required],
     zipCode: '',
     year: 2016
   }),
   groupDates: fb.group({
     fromDate_g: [''],
     toDate_g: ['', Validators.required]
   }, {validator: Validators.required}),
   dates: fb.group({
     fromDate: '',
     toDate: ''
   })
  });

  let datesGroup =  this.form.controls['dates'] as FormGroup;


}