前端小白第一次使用redux存取数据练习

佚名 6年前 (2019-04-13) 随笔 2167人围观抢沙发百度已收录

在学习了redux基本教程后，课程参考如下网址：https://www.redux.org.cn/docs/introduction/CoreConcepts.html，开始着手练习

1.首先编写一个actions

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export const CHANGE_VALUE = 'CHANGE_VALUE';

function infoInputChange(data) {
return (dispatch) => {
dispatch({
type: CHANGE_VALUE,
data: {
...data,
},
});
};
}

export { infoInputChange };
2.编写一个reducers
import * as actions from '../actions/patient.js';

const initialState = {
patientSelectedRowKeys: [],
};

export default function index(state = initialState, action = {}) {
switch (action.type) {
case actions.CHANGE_VALUE:
return Object.assign({}, state, {
patientSelectedRowKeys: action.data,
});
default:
return state;
}
}

3.在reducers 的index.js中填加如下内容

import { combineReducers } from 'redux'; import patient from './patient';
// 将现有的reduces加上路由的reducer const rootReducer = combineReducers({ patient,
// routing: routerReducer, });
export default rootReducer; 4.在使用的组件存取中要先引入 import { connect } from 'react-redux'; import * as actions from '@actions/patient.js'; //取store数据时候用 const { PatientTableState = {} } = this.props; const patientSelectedRowKeys = PatientTableState.patientSelectedRowKeys.patientSelectedRowKeys; //数据变更后存数据用 this.props.dispatch(actions.infoInputChange({ patientSelectedRowKeys: ids, })); export default connect((state) => { return { PatientTableState: state.patient, }; })(PatientTable);