Question

我正在使用每个动态创建的小部件使用react-redux构建具有多部件的react应用。

小部件中的更新反映在所有其他小部件中时，我遇到问题。

有什么方法可以处理multi reducer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
});

动作

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

index.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

您可以通过为每个新创建的小部件分配唯一的ID并为包装创建一个新的父级reducer作为包装器，来为每个widget动态还原：

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
});

然后为每个窗口小部件的每个操作提供一个窗口小部件ID：

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

所得的减速器将如下所示：

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

}

具有相同Redux React组件的多个实例

1 个答案: