访问nestes FormArray

Question

export class RegulationComponent implements OnInit {
    regulation: Regulation;
    isCreateNew = false;
    regulationForm: FormGroup;
    itemArray: FormArray;
    paragraphArray: FormArray;


 constructor(private route: ActivatedRoute, private fb: FormBuilder) {
  this.regulationForm = new FormGroup({
  head: new FormControl(''),
  title: new FormControl(''),
  info: new FormControl(''),
  createdDate: new FormControl(''),
  tableOfContentTitle: new FormControl(''),
  items: new FormArray([
    new FormGroup({
      number: new FormControl(''),
      text: new FormControl(''),
      title: new FormControl(''),
      paragraphs: new FormArray([
        new FormGroup({
          number: new FormControl(''),
          text: new FormControl(''),
          title: new FormControl('')
        })
      ])
    })
  ]),
});
this.itemArray = <FormArray>this.regulationForm.controls['items'];
}

这是我的表格，我的问题是：如何访问“items”数组中的“paragraph”数组？

像

这样的东西

this.itemArray = <FormArray>this.regulationForm.controls['items'];

仅适用于“paragraph”数组。

感谢您的帮助！

Answer 1

你可以尝试：

<FormArray>this.regulationForm.get('items.paragraphs');