不可变地更新 redux 中的对象数组

Question

我在这里改变状态，但我不想！我所有不改变状态的尝试都返回语法错误，所以我转向这里。

这是我的 redux 数据结构：

controls: (array)[
    0:
        id: "e06c5fbf-6d57-4f5b-a601-bfc4ad265def"
        status: 'complete'
        files: []
    1:
        id: "e06c5fbf-6d57-4f5b-a601-bfc4ad265def"
        status: 'complete'
        files: []
    ...
    ]

// 和我的减速器

export default function frameworkReducer(state = initialState, action) {
    case RECEIVE_CONTROL_STATUS_UPDATE:
            const index = action.payload.index;
            const newState = {...state};
            newState.controls[index] = { ...state.controls[index], status: action.payload.value };
            return newState

Answer 1

这对我有用：

// 减速机

    let index = action.payload.index
    let controls = [...state.controls];
    controls[index] = {...controls[index], status: action.payload.value};
    return {...state, controls}

Answer 2

如果您正在查找和更新特定的 row/item。

           case RECEIVE_CONTROL_STATUS_UPDATE:
            let findItem = state.controls.find(a=>a.index===action.payload.index);
            let filtered = state.controls.filter(a=>a.index!==action.payload.index);
            let updateState = [filtered, findItem];
            return {
              ...state,
              constrols: updatedState
            }

不可变地更新 redux 中的对象数组

immutably update array of objects in redux

reactjs

redux

immutability

mutable