React native 嵌套异径管don'；不能更新

我有一个关于嵌套减缩器的问题

结构与此类似：

const INITIAL_STATE = {
    items: [],
    planningState:null,
    loading: false,
    idx_selected : '2'
};

const mockItems = [
{
    date: "2018-08-24 15:00:00",
    type: "dropoff",
    status: null,
    id: "553",
    //many others things
},
{
    date: "2018-08-24 19:00:00",
    type: "pickup",
    status: "ordered",
    id: "553",
    //other things
},
{
    date: "2018-07-18 08:00:00",
    type: "delivery",
    status: null,
    id: "554",
    //other things
},

在state.items中，结构如下所示：

const INITIAL_STATE = {
    items: [],
    planningState:null,
    loading: false,
    idx_selected : '2'
};

const mockItems = [
{
    date: "2018-08-24 15:00:00",
    type: "dropoff",
    status: null,
    id: "553",
    //many others things
},
{
    date: "2018-08-24 19:00:00",
    type: "pickup",
    status: "ordered",
    id: "553",
    //other things
},
{
    date: "2018-07-18 08:00:00",
    type: "delivery",
    status: null,
    id: "554",
    //other things
},

])

我需要更改一个项目的状态，而不更改其他属性。我知道我必须克隆每一层，但我犯了一个错误

case SCAN_CLOSE_DONE:
  //state.items[state.idx_selected].status=done
     return{
      ...state,
      items:{
        ...state.items,
        [state.idx_selected]:{
          ...state.items[state.idx_selected],
            status: "done"
        }
      }
    };

---

以处理该状态块的所有内容的reducer为例，将其分解为多个reducer，每个reducer处理该状态块的一部分

const items = (state = [], { type, items, item, idx_selected, status }) => {
    switch(type) {
        case SCAN_CLOSE_DONE:
        const newState = [...state];
        const item = { ...newState[idx_selected], status };
        newState[idx_selected] = item;
        return newState;

        //...

        default:
            return state;
    }
};

// just examples, actual use case might be different:
const planningState = (state = null, { type, planningState }) => type === MY_ACTION ? planningState : state;
const loading = (state = null, { type, loading }) => type === ANOTHER_ACTION ? loading : state;
const idx_select = //...

export default combineReducers({
    items,
    planningState,
    loading,
    idx_select
});