Question

我有react-redux应用程序，它是一个模态。我需要从外部切换它。我最初的应用程序看起来像这样：

import React, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import { applyMiddleware, compose, createStore } from 'redux';
import { Provider } from 'react-redux';
import thunk from 'redux-thunk';

import App from './lib/containers/App';

import reducer from './lib/ducks/reducers';

import MY_PROPTYPES from './lib/proptypes';

/* eslint-disable no-underscore-dangle */
const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__
  || compose;
/* eslint-enable */
const middleware = [];
middleware.push(thunk);

if (process.env.NODE_ENV !== 'production') {
  // eslint-disable-next-line global-require
  const { createLogger } = require('redux-logger');
  middleware.push(createLogger());
}

export default class Gallery extends PureComponent {
 render() {


    const initState = {
     ...
    };

   const store = createStore(
        reducer,
        initState,
        composeEnhancers(applyMiddleware(...middleware))

    return (
      <Provider store={store}>
        <App
          onClose={e => onClose(e)}
          isVisible={isVisible}
          initialPosition={initialPosition}
        />
      </Provider>
    );
  }
}

当我关闭模态并打开它时，这导致了我的问题。尽管存储发生了更改，但它停止了重新渲染。因此，请相应地存储更改，但是我的应用程序对这些更改没有反应。我发现这是因为我创建了商店的其他实例，然后再次将其传递给我的应用程序，但它仍连接到先前的商店。

因此，我更改了入口点：我添加了状态为store的构造函数，并将创建存储更改为以下代码：

 let newStore = store;
    if (!newStore) {
      newStore = createStore(
        reducer,
        initState,
        composeEnhancers(applyMiddleware(...middleware))
      );
      this.setState({ store: newStore });
    }

这个newStore我传递给我的提供者。这解决了我的问题，App会根据商店进行更改，但是现在我遇到了这个JS错误：

警告：在现有状态转换过程中无法更新（例如在render中）。渲染方法应该是道具的纯粹功能和状态。

我的package.json：

{
  "name": "@fishingbooker/gallery",
  "version": "1.0.0",
  "description": "",
  "main": "./dist",
  "directories": {
    "doc": "docs"
  },
  "scripts": {
    "lib": "babel src -d dist",
    "lib:watch": "babel src -w -d dist",
    "docs": "webpack-dev-server --open",
    "start": "webpack-dev-server --open --mode development --host 0.0.0.0 --disable-host-check --https",
    "docs:prof": "webpack -p"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/cli": "^7.1.2",
    "@babel/core": "^7.1.2",
    "@babel/helper-plugin-utils": "^7.0.0",
    "@babel/plugin-proposal-class-properties": "^7.2.3",
    "@babel/preset-env": "^7.0.0",
    "@babel/preset-react": "^7.0.0",
    "@babel/register": "^7.0.0",
    "babel-core": "^7.0.0-bridge.0",
    "babel-loader": "^8.0.4",
    "html-webpack-plugin": "^3.2.0",
    "webpack": "^4.20.2",
    "webpack-cli": "^3.1.2",
    "webpack-dev-server": "^3.1.9"
  },
  "dependencies": {
    "@fishingbooker/react-slick": "0.0.5",
    "axios": "^0.18.0",
    "classnames": "^2.2.6",
    "lodash": "^4.17.11",
    "mousetrap": "^1.6.2",
    "prop-types": "^15.6.2",
    "react": "^16.5.2",
    "react-dom": "^16.5.2",
    "react-redux": "^6.0.0",
    "react-swipe": "^6.0.3",
    "redux": "^4.0.1",
    "redux-logger": "^3.0.6",
    "redux-thunk": "^2.3.0"
  }
}

有人知道我该如何解决该错误，或者如何重新呈现我的入口点，以便我的应用程序保持与商店的连接。

谢谢。

渲染应用程序导致创建两个Redux存储实例

0 个答案: