重新思考Redux

Rematch是没有boilerplate的Redux最佳实践。没有多余的action types，action creators，switch 语句或者thunks。

索引

快速开始
目的
例子
迁移指南
API参考
- 核心API
- 初始Redux API
- 插件API
技巧
- Devtools
- React
- Vue
- Testing
- TypeScript
- Immer
- Decoupling reducers
插件
- Selectors
- Loading
- Persist
- Updated
- React Navigation
- Immer
灵感

快速开始

npm install @rematch/core

第一步：Init

init 用来配置你的 reducers, devtools & store。

index.js

import { init } from '@rematch/core'
import * as models from './models'

const store = init({
  models,
})

export default store

第二步：Models

该model促使state， reducers， async actions 和 action creators 放在同一个地方。

models.js

export const count = {
  state: 0, // initial state
  reducers: {
    // handle state changes with pure functions
    increment(state, payload) {
      return state + payload
    }
  },
  effects: {
    // handle state changes with impure functions.
    // use async/await for async actions
    async incrementAsync(payload, rootState) {
      await new Promise(resolve => setTimeout(resolve, 1000))
      this.increment(payload)
    }
  }
}

理解模型与回答几个问题一样简单：

我的初始 state 是什么? state
我如何改变 state？ reducers
我如何处理异步 action？ effects with async/await

Step 3: Dispatch

dispatch 是我们如何在你的model中触发 reducers 和 effects。 Dispatch 标准化了你的action，而无需编写action types 或者 action creators。

import { dispatch } from '@rematch/core'

                                                  // state = { count: 0 }
// reducers
dispatch({ type: 'count/increment', payload: 1 }) // state = { count: 1 }
dispatch.count.increment(1)                       // state = { count: 2 }

// effects
dispatch({ type: 'count/incrementAsync', payload: 1 }) // state = { count: 3 } after delay
dispatch.count.incrementAsync(1)                       // state = { count: 4 } after delay

Dispatch 能被直接调用，或者用 dispatch[model][action](payload)简写。

Step 4: View

import React from 'react'
import ReactDOM from 'react-dom'
import { Provider, connect } from 'react-redux'
import store from './index'

const Count = props => (
  <div>
    The count is {props.count}
    <button onClick={props.increment}>increment</button>
    <button onClick={props.incrementAsync}>incrementAsync</button>
  </div>
)

const mapState = state => ({
  count: state.count
})

const mapDispatch = ({ count: { increment, incrementAsync }}) => ({
  increment: () => increment(1),
  incrementAsync: () => incrementAsync(1)
})

const CountContainer = connect(mapState, mapDispatch)(Count)

ReactDOM.render(
  <Provider store={store}>
    <CountContainer />
  </Provider>,
  document.getElementById('root')
)

从Redux迁移

从Redux转到Rematch只需很少的几步。

API

Experiment with v1.0.0-alpha

使用@next标志安装rematch和所有插件。

Like this project? ★ us on Github :)+

Next目的

Last updated 7 years ago