从Angular 2+ FormArray获取所有验证错误

import { FormGroup, FormControl, Validators, FormArray } from '@angular/forms';

myForm: FormGroup;

constructor() {
  this.myForm = new FormGroup({
    myArray: new FormArray([
      new FormControl('', Validators.required),
      new FormControl('', Validators.minLength(5)),
      // 添加更多的表单控件
    ])
  });
}

<div formArrayName="myArray">
  <div *ngFor="let control of myForm.get('myArray').controls; let i = index">
    <input [formControlName]="i" type="text">
    <div *ngIf="control.invalid && (control.dirty || control.touched)">
      <div *ngIf="control.errors.required">
        必填字段
      </div>
      <div *ngIf="control.errors.minLength">
        最小长度为5个字符
      </div>
      <!-- 添加更多的验证错误信息 -->
    </div>
  </div>
</div>