Angular2 patchValue push value into array

Question

Is it It looks like Angular2\'s FormGroup.patchValue() doesn\'t push new elements into an array.

For example something like this:

ngOnInit() {

             


        

Answer 1

I hope this will help you. I have a complex object where my object has an object inside and object inside. sorry for my grammar. but i hope my code will help you

ngOnInit() {
    this.descriptifForm = this._fb.group({
      name: 'ad',
      descriptifs: this._fb.array([ this.buildForm() ]),
    });

    this._service.getData().subscribe(res => {
      this.descriptifForm.setControl('descriptifs', this._fb.array(res || []));
    });

  }
buildA(): FormGroup {
    return this._fb.group({
      Id: '',
      Groups: this._fb.array([ this.buildB() ]),
      Title: ''
    });
  }

  buildB(): FormGroup {
    return this._fb.group({
      Id: '',
      Fields: this._fb.array([ this.bbuildC() ]),
      Type: ''
    });
  }

  buildC(): FormGroup {
    return this._fb.group({
      Answers: this._fb.array([ this.buildD() ]),
      Code: '',
    });
  }

  buildD(): FormGroup {
    return this._fb.group({
      Data: ''
    });
  }