Angular FormGroup:在Angular 11中找不到路径为的控件

我试图根据需求动态生成表单，但它给出了一个错误，显示无法找到路径为的控件：

在这里，我从API中得到了一个列表，我试图动态生成复选框并将它们添加到formgroup中，但出现了错误，请参考下面的代码

以下是组件的代码：

这是HTML组件，我正试图用它绑定数据 formControlName：

---

首先，您应该将所有

fromControlName

属性用

[]

包围起来，如中所述：

---

我也尝试了这个方法，但没有使用错误是

this.checkboxform1=this.formBuilder.group（{orders:newformarray（[]，this.minSelectedCheckboxes（1））}）这里formControlName
i
在哪里？这可能对你有帮助
export class QualificationExpComponent implements OnInit {
  
  jobmasterList: any = [];
  checkboxform1: FormGroup;
  public jobcount = 0;

  constructor(private formBuilder: FormBuilder, private callapi: ServiceService, private _router: Router) { }

  ngOnInit(): void {
   
    this.addCheckboxes();
    this.initializecheckboxform1();

    this.callapi.getDetails().subscribe(res => {
      if (res.data !== null) {
        this.jobmasterList = res.data.jobs;
        this.categoriesList = res.data.jobs[0].category;
        this.subcatList = res.data.jobs[0].category[0].sub_category;
        console.log(this.subcatList)
      }
    })
  }
 
  }
  initializecheckboxform1() {
    this.checkboxform1 = this.formBuilder.group({
      orders: new FormArray([], this.minSelectedCheckboxes(1))
    });
  }
  minSelectedCheckboxes(min = 1) {
    const validator: ValidatorFn = (formArray: FormArray) => {
      const totalSelected = formArray.controls
        // get a list of checkbox values (boolean)
        .map(control => control.value)
        // total up the number of checked checkboxes
        .reduce((prev, next) => next ? prev + next : prev, 0);

      // if the total is not greater than the minimum, return the error message
      return totalSelected >= min ? null : { required: true };
    };
    return validator;
  }
  get ordersFormArray() {
    return this.checkboxform1.controls.orders as FormArray;
  }

  private addCheckboxes() {
    this.jobmasterList.forEach(() => this.ordersFormArray.push(new FormControl(false)));
  }
  get sf() {
    return this.salaryexpForm.controls;
  }
  get rf() {
    return this.remunerationForm.controls;
  }

 
  SelectePrevExperience() {
    const selectedOrderIds = this.checkboxform1.value.orders
    .map((v, i) => v ? this.jobmasterList[i].id : null)
    .filter(v => v !== null);
  console.log(selectedOrderIds);
  console.log(this.checkboxform1.value);
  }
  checkboxform1submit() {
   console.log(this.checkboxform1.value);
  }
}

<span formArrayName="orders" *ngFor="let master of jobmasterList; let i = index">
                    <div *ngIf="i === jobcount">
                    <span class="TextMaroonBold" style="color: #1c8bea;font-weight: bold;"> {{master.description}}
                    </span><br>
                    <span *ngFor="let order of master.category; let j = index">
                        <input type="text" value="{{order.category_id}}" [formControlName]="j" style="display: none;">
                        <span class="TextMaroonBold"> {{order.name}}
                        </span>
                        <div class="ex1">
                            <span *ngFor="let option of order.sub_category; let k = index" class="checkbox">
                        
                                <div class="form-check" style="padding-left: 35px;">
                                        <input type="checkbox" value="{{option.ref_id}}" [formControlName]="k">
                                        {{option.name}}
                                    
                                </div>
                        
                            </span>
                        </div>
                    </span>
                </div>
                </span>

ERROR Error: Cannot find control with path: 'orders -> i'

<input type="checkbox" value="{{option.ref_id}}" [formControlName]="i">