无法在formGroup中推送数组

Question

我有这个formGroup：

variacaoForm: FormGroup;

此表单组包含一个名为variacoes的控件。

我需要按传递给函数参数的确定索引在此控件中推送一个数组，问题是我用来推送（this.listAtributos）的数组积累了，当索引更改时必须重新初始化此数组。

我尝试：

  adicionaAtributo(index: number){ //Adiciona atributo no form group

    if(this.verificaIndexs.includes(index)){
      for(let i=0;i<this.listAtributos.length;i++){
        if(index == this.listAtributos[i].indexvariacaoatributo){
          this.listAtributos.push(this.listAtributos[i])
        }
      }
    }else{
        this.listAtributos = [];
    }

    this.verificaIndexs.push(index);

    this.listAtributos.push({indexvariacaoatributo: index, id:this.idAtributo, tipovariacao: this.variacaoForm.value.variacoes[index].tipo, valorvariacao: this.variacaoForm.value.variacoes[index].atributo})
    const control = (<FormArray>this.variacaoForm.controls['variacoes']).at(index);
    control.patchValue({listaatributos: this.listAtributos});
  }

但不起作用，并导致内存泄漏**。 @Edit **

也请尝试在插入后排除：

adicionaAtributo(index: number){ //Adiciona atributo no form group
    this.listAtributos.push({indexvariacaoatributo: index, id:this.idAtributo, tipovariacao: this.variacaoForm.value.variacoes[index].tipo, valorvariacao: this.variacaoForm.value.variacoes[index].atributo})
    const control = (<FormArray>this.variacaoForm.controls['variacoes']).at(index);
    control.patchValue({listaatributos: this.listAtributos});


    for(let i=0;i<this.variacaoForm.value.variacoes.length;i++){
      for(let j=0;j<this.variacaoForm.value.variacoes[i].listaatributos.length;j++){
        if(this.variacaoForm.value.variacoes[i].listaatributos[j].indexvariacaoatributo !== index){
          this.listAtributos.splice(j, 1)
        }
      }
    }

  control.patchValue({listaatributos: this.listAtributos});

}

但也不起作用：（