将formGroup推向嵌套的formarray

Question

我有一种表格，用户可以填写他们的锻炼。我想调用addset（），然后将formGroup推向sets formarray

    ngOnInit() {
       this.workoutForm = new FormArray([
          new FormGroup({
             name: new FormControl(),
             sets: new FormArray([
                new FormGroup({
                   reps: new FormControl(),
                   weight: new FormControl(),
                }),
             ]),
          })
       ]);
    }
    
     public addSet() {
       this.workoutForm.controls[0].controls.sets.push(
          new FormGroup({
             reps: new FormControl(),
             weight: new FormControl(),
          }),
       )
    }

Answer 1

copy-paste（根据您的示例重命名变量）来自角文档：

    get sets() {
       return this.workoutForm.get('sets') as FormArray;
    }
    
    addSet(reps, weight) {
       this.sets.push(new FormGroup({
          reps: new FormControl(reps),
          weight: new FormControl(weight),
       }));
    }

https ：//angular.io/guide/reactive-forms#creating-dynamic-forms