Question

我在redux中处于这种状态：

draft: {
    temporary: { clientId: null, shoppingCart: [] },
},

在我的购物车中，我使用 react-addons-update 推送一些对象：

const newState = { ...state };
let cart = newState.draft.temporary.shoppingCart;
cart = update(cart, { $push: [{ id: 1, quantity: 3 }] });
newState.draft.temporary.shoppingCart = cart;
return newState;

，我在应用程序中的newState是：

draft: {
        temporary: { clientId: null, shoppingCart: [
            {id: 1, qnt: 3},
        ]},
    },

我用以下方法配置 products 减速器：

products: persistReducer(products: {
    key: 'products',
    storage,
    whitelist: ['draft'],   
}, products),

但是一旦重新加载应用程序，我的商店就不会保留。

更新：

有效的示例解决方案：

newState.draft = { ...newState.draft, temporary: { ...newState.draft.temporary, shoppingCart: [ ...newState.draft.temporary.shoppingCart, { id: 1, qnt: 3 } ]}};

没有 react-addons-update 的

解决方案不起作用：

newState.draft.temporary.shoppingCart = [ ...newState.draft.temporary.shoppingCart, { id: payload.id, quantity: 1 } ];

有一种“更清洁的解决方案”？

Answer 1

以下是一个适合您情况的示例：

import { persistCombineReducers, persistReducer } from 'redux-persist';

const draftPersistConfig = { key: 'draft', storage: AsyncStorage };

const reducers = { products: persistReducer(draftPersistConfig, products), // ...other reducers if you have any }

const persistConfig = { key: 'root', storage: AsyncStorage, debug: true, whitelist: ['draft'] };

persistCombineReducers(persistConfig, reducers);应该返回您可以用来创建商店的rootReducer

Answer 2

我使用的最终解决方案是更换减速器：

  const newDraft = { ...state.draft };
  let cart = state.draft.temporary.shoppingCart;

  const index = _.findIndex(cart, { id: payload.id });

  if (index === -1) cart = update(cart, { $push: [{ id: payload.id, quantity: 1 }] });
  else cart = update(cart, { [index]: { quantity: { $set: cart[index].quantity + 1 } } });

  newDraft.temporary.shoppingCart = cart;

  return { ...state, draft: { ...newDraft } };

具有redux-persist的对象的React-Native Persist对象

2 个答案: