0

嗨，我是反应原生和 redux 的新手。我正在使用 redux persist 在本地存储数据，但是有些键我不想持久化。为此，我正在使用黑名单，这是行不通的。它保留所有键，而不是忽略我想要的键。这是代码

我不想保留data和tabbar。

store.js

import rootReducer from './reducers'
// import AsyncStorage from '@react-native-community/async-storage';
import { AsyncStorage } from 'react-native';
import { persistStore, persistReducer } from 'redux-persist'

const persistConfig = {
    key: 'root',
    storage: AsyncStorage,
    blacklist: ['data', 'tabbar'],
}

const persistedReducer = persistReducer(persistConfig, rootReducer)

let store = createStore(persistedReducer)

let persistor = persistStore(store)

export { store, persistor }.

减速器/product.js


const initialState = {
    products: [],
    favs: [],
    data: [],
    tabbar: false
}

const products = (state = initialState, action) => {
    switch (action.type) {
        case SET_PRODUCTS:
            return {
                ...state,
                products: action.products
            }
        case ADD_TO_FAV:
            return {
                ...state,
                favs: [...state.favs, action.product]
            }
        case REMOVE_FROM_FAV:
            return {
                ...state,
                favs: state.favs.slice().filter(f => f._id != action.product._id)
            }
        case SET_DATA:
            return {
                ...state,
                data: [...state.data, action.data]
            }
        case TABBAR:
            return {
                ...state,
                tabbar: action.tabbar
            }
        default:
            return state;
    }
}

export default products;

减速器/index.js

import prodReducer from './products';

export default combineReducers({
    prodReducer
})

动作/product.js

export const SET_PRODUCTS = 'SET_PRODUCTS';
export const ADD_TO_FAV = 'ADD_TO_FAV';
export const REMOVE_FROM_FAV = 'REMOVE_FROM_FAV';
export const SET_DATA = 'SET_DATA';
export const TABBAR = 'TABBAR';



export const setProducts = (products) => {
    return {
        type: SET_PRODUCTS,
        products
    };
}

export const addToFav = (product) => {
    return {
        type: ADD_TO_FAV,
        product
    };
}
export const removeFromFav = (product) => {
    return {
        type: REMOVE_FROM_FAV,
        product
    };
}

export const tabbar = (tabbar) => {
    return {
        type: TABBAR,
        tabbar
    };
}

export const setData = (data) => {
    return {
        type: SET_DATA,
        data
    };
}

应用程序.js

import React, { useEffect } from 'react';
import Navigator from './navigation/Navigator'
import { Provider } from 'react-redux';
import { store, persistor } from './redux/store';
import { PersistGate } from 'redux-persist/integration/react'
import { firebase } from '@react-native-firebase/messaging'
import AsyncStorage from '@react-native-community/async-storage';


  return (
    <Provider store={store}>
      <PersistGate loading={null} persistor={persistor}>
        <StatusBar backgroundColor={'#AD1457'} />
        <Navigator />
      </PersistGate>
    </Provider>
  )
}
4

4 回答 4

0

您的持久配置对我来说似乎没问题。你也可以添加whitelist密钥吗？

const persistConfig = {
    key: 'root',
    storage: AsyncStorage,
    blacklist: ['data', 'tabbar'],
    whitelist:['products','favs']
}
于 2020-04-13T18:09:15.460 回答
0

您是否尝试过在添加持久配置后完全删除该应用程序并进行全新安装？没有它，之前保留的数据仍然存在。

于 2020-04-13T20:19:56.423 回答
0

我已经解决了这个问题

现在，我创建了两个减速器。一个用于黑名单，一个用于白名单。然后结合起来

export default combineReducers({
    whitelistReducer, blackListReducer
})

并在商店中创建一个persistConfig，在其中我在黑名单和白名单中给出了受人尊敬的reducer

const persistConfig = {
    key: 'root',
    storage: AsyncStorage,
    whitelist: ['whitelistReducer'],
    blacklist: ['blackListReducer']
}
于 2020-04-14T14:21:30.223 回答
0

仔细检查后，持久配置并不完全正确。为了blacklist和whitelist工作，他们必须匹配你应用持久配置的reducer的键 - 在这种情况下，rootReducer只有一个键 - prodReducer。

您想要的是除了 root 之外专门配置产品减速器的持久性。文档称之为嵌套的 persists。你可以在你的reducers/index.js：

import AsyncStorage from '@react-native-community/async-storage';
import { persistStore, persistReducer } from 'redux-persist'

import prodReducer from './products';

const productsPersistConfig = {
  key: 'products',
  storage: AsyncStorage,
  blacklist: ['data', 'tabbar'],
}

export default combineReducers({
    prodReducer: persistReducer(productsPersistConfig, prodReducer),
})

然后，您可以从 main 中删除黑名单persistConfig。

于 2020-04-14T13:07:07.307 回答