找不到类型为“对象”的其他支持对象“ [对象对象]”。 NgFor仅支持绑定到Iterables，例如数组。解？

Question

我有这样的API调用

DEMO

组件：

this._newTripApi.getData().subscribe(selected => {
          this.selectedSettings = selected;
          this.isLoading = false;
        })

服务：

public getData(): Observable<any> 
{
      return this._api.get(`instances/${this._config.getData().user.instance._id}?fields=newTripSettings`)
            .map(res => res.data.newTripSettings);
}

当我使用res.json（）时，它说json不是函数，JSON响应如下所示，我需要在支持的html中显示所有newtripSettings对象，但它说： 找不到类型为“对象”的其他支持对象“ [对象对象]”。 NgFor仅支持绑定到Iterables，例如数组。解决方案？

{
  "data": {
    "_id": "5aaab927c756c86c15d3b1dc",
    "newTripSettings": {
      "betweenSites": {
        "enabled": true,
        "consultation": {
          "enabled": true
        },
        "radiotherapy": {
          "enabled": true
        },
        "chemotherapy": {
          "enabled": true
        },
        "dialysis": {
          "enabled": true
        },
        "coronarography": {
          "enabled": true
        },
        "scan": {
          "enabled": true
        },
        "transfer": {
          "enabled": true
        },
        "urgentPatientStop": {
          "enabled": true
        },
        "urgentOther": {
          "enabled": true
        },
        "otherPaidByHospital": {
          "enabled": true
        },
        "otherPaidByPatient": {
          "enabled": true
      },
      "fromSite": {
        "enabled": true
        "discharge": {
          "enabled": true
        },
        "consultation": {
          "enabled": true
        },
        "radiotherapy": {
          "enabled": true
        },
        "chemotherapy": {
          "enabled": true
        },
        "dialysis": {
          "enabled": true
        },
        "coronarography": {
          "enabled": true
        },
        "scan": {
          "enabled": true
        },
        "urgentPatientStop": {
          "enabled": true
        },
        "urgentOther": {
          "enabled": true
        },
        "otherPaidByHospital": {
          "enabled": true
        },
        "otherPaidByPatient": {
          "enabled": true
        }
      },
      "toSite": {
        "enabled": true,
        "hospitalisation": {
          "enabled": true
        },
        "consultation": {
          "enabled": true
        },
        "radiotherapy": {
          "enabled": true
        },
        "chemotherapy": {
          "enabled": true
        },
        "dialysis": {
          "enabled": true
        },
        "coronarography": {
          "enabled": true
        },
        "scan": {
          "enabled": true
        },
        "otherPaidByHospital": {
          "enabled": true
        },
        "otherPaidByPatient": {
          "enabled": true
        }
      },
      "other": {
        "enabled": true,
        "discharge": {
          "enabled": true
        },
        "hospitalisation": {
          "enabled": true
        },
        "consultation": {
          "enabled": true
        },
        "radiotherapy": {
          "enabled": true
        },
        "chemotherapy": {
          "enabled": true
        },
        "dialysis": {
          "enabled": true
        },
        "coronarography": {
          "enabled": true
        },
        "scan": {
          "enabled": true
        },
        "otherPaidByPatient": {
          "enabled": true
        }
      }
    }
  }
}