Error: Actions must be plain objects. Use custom middleware for async actions.

Question

我目前正在开发一个使用 reactjs 的应用程序，该应用程序利用 react-router、redux、thunk 和 firebase 等技术。不幸的是，当我发送异步操作时出现以下错误。

我遍历了Whosebug提出的所有类似问题，仍然找不到问题所在。

如有任何帮助，我们将不胜感激。

错误：

app.js:54628 Error: Actions must be plain objects. Use custom middleware for async actions. at dispatch (app.js:31576) at Object.fetchBase (app.js:32220) at Object.next (app.js:63640) at app.js:54507 at app.js:54622 at

package.json

...
"react-router-dom": "^4.1.1",
"react-router-redux": "^4.0.8",
"redux-thunk": "^2.2.0",
"redux": "^3.7.1",
...

store.js

import { createStore, applyMiddleware, compose } from 'redux';
import reduxThunk from 'redux-thunk';
import { routerMiddleware } from 'react-router-redux';
import { browserHistory } from 'react-router-dom';

// Import the root reducer
import allReducers from './reducers';

// import default data
import config from './data/config';

const defaultState = {
  events: [],
  config,
  activeGame: null,
  basePath: '',
};

const router = routerMiddleware(browserHistory);
const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;
const store = createStore(allReducers, defaultState,
  composeEnhancers(applyMiddleware(reduxThunk, router)));

export default store;

Actions.js

...
export const fetchBase = () => {
  const organizationRef = database.ref(`users/${auth.currentUser.uid}/organization`);
  return dispatch => {
    organizationRef.once('value', snapshot => {
      dispatch({
        type: ActionTypes.FETCH_BASE,
        payload: snapshot.val()
      });
    });
  };
}; // fetchBase
...

Answer 1

我认为 organizationRef.once returns firebase.Promise 这就是您出现该错误的原因。

Answer 2

你的 action creator 看起来很不错，但是尝试像这样 ref 到 firebase 数据库：

firebase.database().ref(`/users/${uid}/employees`)

Answer 3

您的动作创建器看起来不错。错误消息表明，您没有正确注册 redux-thunk 中间件。

尝试导入如下：

import thunk from 'redux-thunk';

然后用

应用它

const store = createStore(allReducers, defaultState,
   composeEnhancers(applyMiddleware(thunk, router)));

来自：redux-thunk repo

Answer 4

感谢大家的帮助。我确实找到了问题并且正在踢自己。上面的代码工作正常，问题是我在哪里注册了商店。我正在导入一个用于测试目的的辅助存储文件。真店一更新就忘了切换

Error: Actions must be plain objects. Use custom middleware for async actions.

Error: Actions must be plain objects. Use custom middleware for async actions.

asynchronous

firebase

reactjs

redux

redux-thunk