javascript - Redux 存储和 PouchDB 未与 redux-pouchdb 同步

Question

我正在尝试将我的 redux 状态同步到 PouchDB 实例，但遇到了问题。

正如日志中所示，在操作发生后，我的 redux 状态既没有同步到 PouchDB，PouchDB 文档也没有在更新时同步到 redux 状态。

我尝试实现redux-pouchdb，因为它是在 jrzerr/react-redux-pouchdb 中实现的但我既没有收到错误，也没有同步工作。

这是我正在使用的代码:

Reducer(modules/mainbase.js):

import { persistentReducer } from 'redux-pouchdb';
export const INPUT_CHANGED = 'mainbase/INPUT_CHANGED'

const initialState = {}

function mainbase (state = initialState, action) {
    switch (action.type) {
        case INPUT_CHANGED:
            state[action.key] = action.value;
            return {...state}
        default:
            return state;
    }
}

export default persistentReducer(mainbase);

export const inputChanged = (key, value) => {
  return dispatch => {
    dispatch({
      type: INPUT_CHANGED,
      key: key,
      value: value
    })
  }
}

根 reducer (modules/index.js):

import { combineReducers } from 'redux'
import { routerReducer } from 'react-router-redux'
import mainbase from './mainbase'

export default combineReducers({
  router: routerReducer,
  mainbase
})

商店(store.js):

import { createStore, applyMiddleware, compose } from 'redux'
import { routerMiddleware } from 'react-router-redux'
import thunk from 'redux-thunk'
import createHistory from 'history/createBrowserHistory'
import rootReducer from './modules'
import { persistentStore } from 'redux-pouchdb'
import PouchDB from 'pouchdb'

export const history = createHistory()

const db = new PouchDB('testproject')

const initialState = {}

const enhancers = [
  persistentStore(db)
]

const middleware = [
  thunk,
  routerMiddleware(history)
]

const composedEnhancers = compose(
  applyMiddleware(...middleware),
  ...enhancers
)

const store = createStore(
  rootReducer,
  initialState,
  composedEnhancers
)

export default store

非常感谢您的帮助。

Answer 1

在主库中，您直接更新状态。这通常效果不佳。您应该首先创建当前状态的副本，更新该副本并将更新后的副本作为新状态返回。