在NGX-Formly中使用NGX-DataTable时如何向模型添加新行

import { FormArray } from '@angular/forms';
import { FormGroup } from '@angular/forms';
import { FieldType } from '@ngx-formly/core';

fields: [
  {
    key: 'dataTable',
    type: 'datatable',
    templateOptions: {
      addRowButton: true
    },
    fieldArray: {
      fieldGroup: []
    }
  }
]

export class DataTableTypeComponent extends FieldType {
  defaultOptions = {
    templateOptions: {
      addRowButton: false
    }
  };

  addRow() {
    const formArray = this.formControl as FormArray;
    const newRow = new FormGroup({});
    formArray.push(newRow);
  }
}

<ngx-datatable formArrayName="dataTable">
  <ngx-datatable-column>
    <!-- 表格列配置 -->
  </ngx-datatable-column>
</ngx-datatable>

<button type="button" (click)="addRow()" *ngIf="to.addRowButton">Add Row</button>

addRow() {
  const formArray = this.form.get('dataTable') as FormArray;
  const newRow = new FormGroup({});
  formArray.push(newRow);
}