具有相同 redux 反应组件的多个实例

Question

我正在使用 react-redux 使用动态创建的每个小部件构建一个带有多小部件的反应应用程序。

当小部件中的更新反映在所有其他小部件中时，我遇到了问题。

有没有办法处理多个减速器来处理每个小部件的隔离数据？

减速器

import { combineReducers } from 'redux';

const widgetReducer= (state = {}, action) => {
    switch (action.type) {
        case 'SET_API':
            return { ...state, API: action.payload.API };
    }

    return state;
}

export default combineReducers({
    widget: widgetReducer
});

行动

export const SetAPI = (data) => {
    return {
        type: "SET_API",
        payload: {
            API: data
        }
    }
}

索引.js

import { Provider } from 'react-redux';
import { createStore, applyMiddleware } from 'redux';
import reducers from './reducers'
const store = createStore(reducers)
<Provider store={store}><Widget /></Provider>

Answer 1

您可以为每个小部件动态减速器是通过为每个新创建的小部件分配唯一的 id 并创建一个新的父减速器作为包装器，例如：

import { combineReducers } from 'redux';

const widgetReducer= (state = {}, action) => {
    switch (action.type) {
        case 'SET_API':
            return { ...state, API: action.payload.API };
    }

    return state;
}

export widgetsContainerReducer(state = {}, action) {
   
   switch(action.type) {
    case 'SET_API':
    case 'WIDGET_ACTION_1':
    case 'WIDGET_ACTION_2': // other widget specific actions  
      const widgetId = action.payload.id;
   
      return {
        ...state,
        [widgetId]: widgetReducer(state[widgetId], action)
      }}
    default:
      return state;
   }
}

export default combineReducers({
    widgets: widgetsContainerReducer
});

然后为每个小部件特定的每个操作设置一个小部件 ID：

export const SetAPI = (widgetId, data) => {
    return {
        type: "SET_API",
        payload: {
            API: data,
            id: widgetId
        }
    }
}

您生成的减速器将如下所示：

{
   widgets: {
      widget-1: {
        API: 'api-1'
      },
      widget-2: {
        API: 'api-2'
      },
      ...
   }

}