react.js CMS 删除功能的实现方法

页面效果图：数据操作分析：在查询表组件的 TableData.js中操作如下内容：给每一行绑定

页面效果图：

数据操作分析：

在查询表组件的  TableData.js 中操作如下内容：

给每一行绑定一个checkbox，且在点击这个 checkbox 时，触发 action 中的一个方法(formatPostCollectionList)，这个方法是用来更新选中的实体数组。formatPostCollectionList为action中的方法，需要export

定义每一行的实体为一个数组，用变量 postCollections 表示

如果选中当前行，则更新实体数组中的数据；如果取消当前行，则删除实体中的数据；

参数为  row  ；

点击删除按钮后，使用 componentDitUpdate() 生命周期方法，在组件更新后调用。

如果删除成功，则执行 action 中的方法 clearPostCollection()。这个方法是用来清空当前行实体中的数据；

如果删除成功，最后执行  查询表的刷新重新加载数据的方法

更新实体数据与清空实体数据的方法，在 action 中执行。

代码分析：

表查询操作

1、调查询接口，Api中的方法

searchPostCollectionByActivityId(activityId, callback) {
 const queryParam = `/tob/post/search?activeId=${activityId}`; //接口，使用``可以在URL中显示查询参数
 Config.get(queryParam, callback);
 }

2、action中操作查询数据的方法  postCollectionEntityList 存放接口中的所有数据

export function initPostCollection(row){
 return (dispatch, getState) => {
 let activityId = row.activityId;
 Api.searchPostCollectionByActivityId(activityId, params => {
 dispatch(initPostCollectionSetter(activityId,params));
 });
 }
}
function initPostCollectionSetter(activityId,params){
 return {
 type:INIT_POST_COLLECTION,
 activityId:activityId,
 data:{postCollectionEntityList:params}
 }
}

 3、TatleData 表组件中调用 action 的方法，至此 表数据 OK

export default class TableData extends Component {
 constructor(props){
 super(props);
 }

 componentDidMount() {
 const param = this.props.queryData;
 console.log("param === " + param);
 this.props.initPostCollection(param);//action中获取接口数据的方法
 }

 render(){
　　 // 定义postCollectionEntityList中的数据
 let postCollectionEntityList = [
 {
 postCollectionName:'',
 postCollectionId:'',
 activityId:''
 }
 ];
 //判断，如果postCollectionEntityList中有数据，则把数据显示出来
 if (this.props.postCollectionState.postCollectionEntityList) {
 postCollectionEntityList = this.props.postCollectionState.postCollectionEntityList;
 console.log("postCollectionEntityList" + postCollectionEntityList);
 }

 //acb 表数据
 return(
 <div><TableExit data={postCollectionEntityList} acb={this.props.initPostCollection}>
 <TableCloumnsExit dataField="activityTitle">活动名称</TableCloumnsExit>
 <TableCloumnsExit dataField="postCollectionName">帖子集名称</TableCloumnsExit>
 <TableCloumnsExit dataField="postCollectionId">帖子集编号</TableCloumnsExit>
 <TableCloumnsExit dataField="active" dataFormat={this.postCollectionFormatter}>修改</TableCloumnsExit>
 <TableCloumnsExit dataField="send" dataFormat={this.activeFormatter.bind(this)}>发送</TableCloumnsExit>
 <TableCloumnsExit dataField="send" dataFormat={this.questionBankFormatter.bind(this)}>题库</TableCloumnsExit>
 </TableExit>
 </div>
 );
 }
}

删除表数据操作

调删除接口，API中的方法

deletePostCollections (activityId ,params, callback) {
 let path = `/tob/post/deletePostCollection/${activityId}`; //删除接口
 Config.deleteWithNoResponse(path ,params, callback);
 }

action 中写删除数据的方法

删除实体

删除实体前要先 插入 checkbox

checkboxFormatter(cell,row) {
 return <input bsStyle="primary" type="checkbox"></input>
 }

查询表中使用 checkbox

<TableCloumnsExit dataField="alter" dataFormat={this.checkboxFormatter.bind(this)}>选择</TableCloumnsExit>

点击 checkbox 会触发 更新选中的实体数据的方法

checkboxFormatter(cell,row) {
 return <input bsStyle="primary" type="checkbox" onClick={this.props.formatPostCollectionList.bind(this,row)}></input>
 }

更新选中实体数据的方法，在action中编写

export function formatPostCollectionList(row) {
 return(dispatch, getState) => {
 let postCollectionId = row.postCollectionId; //获取每一行的ID
 let state = getState().postCollectionState; //从postCollectionState（）中拿到state并赋值给全局state
 let postCollections = state.postCollections; // 红色字体标注为实体中的数据容器
 let postCollectionItem = {
 postCollectionId:postCollectionId //实体中的数据ID
 };
 if (postCollections) { //postCollections 实体数据，可能 有数据
 let index = -1; // index = -1 指默认实体中没有数据
 for (let i = 0 ;i < postCollections.length ;i++) { //如果实体中有数据，则循环
 let postCollection = postCollections[i]; //拿实体中的数据，给变量postCollection
 let id = postCollection.postCollectionId; //从拿到的实体数据中，取每一个ID，方法对比（选中的数据与实体中的数据对比）
 if (postCollectionId == id) { //如果实体中的ID == 选中的ID
 index = i; //把实体中选中的的数据 赋值为 i 
 }
 }
 if (index > -1) { //如果实体的数据存在，不为空
 postCollections.splice(index,1); //删除实体对象中index位置中的一个数据
 } else {
 postCollections.push(postCollectionItem); //如果实体数据为空，则push实体中的ID数据
 }
 } else {
 postCollections = []; // 第一次render时，实体数据可能为空 / 为undefined，那么将它定义为一个数组
 postCollections.push(postCollectionItem); //给这个空数组push数据
 }
 dispatch(formatPostCollectionListSetter(postCollections));
 }
}
function formatPostCollectionListSetter(params){
 return {
 type:SET_POST_COLLECTIONS,
 data:{postCollections:params} //红色变量为实体数据
 }
}

选中实体数据后，点击删除按钮，会触发deletePostCollections  删除方法

export const DELETE_POST_COLLECTIONS = 'DELETE_POST_COLLECTIONS';
export function deletePostCollections(){ //点击删除按钮后，触发deletePostCollections删除方法
 return(dispatch, getState) => {
 let state = getState().postCollectionState;
 let activityId = state.activityId;
 let postCollections = state.postCollections; //实体对象从state中获取
 Api.deletePostCollections(activityId ,postCollections, params => { //调删除接口的方法
 dispatch(deletePostCollectionsSetter(params));
 });
 }
}
function deletePostCollectionsSetter(params){
 alertPre("",params);
 return {
 type:DELETE_POST_COLLECTIONS,
 data:{deletePostCollectionsResponse:params} //deletePostCollectionsResponse 选中的要删除的数据容器
 }
}

把删除数据的方法绑定到删除按钮，绑定前根据删除钮钮的状态，判断是否可点击

render(){
 let dis = true; //删除按钮状态，默认为禁用状态，返回为true
 let postCollections = this.props.postCollectionState.postCollections; //获取实体中的数据
 if (typeof(postCollections) == 'undefined' || postCollections.length == 0) { //如果实体中的数据为 undefined 或者 为空
 dis = true; //如果实体中没有数据，则按钮状态为禁用状态
 } else {
 dis = false; //如果实体中有数据，选中后的状态为可点击状态
 }

 const buttonsInstanceDel = (
 <ButtonToolbar className="mb10">
 <Button bsStyle="danger" disabled={dis} onClick={this.props.deletePostCollections}>删除贴子集</Button> //红色字体标为 删除数据的方法
 </ButtonToolbar>
 );

 return(
 <div>
 {buttonsInstanceDel}
 </div>
 )
 }

删除成功后，调用生命周期的方法，在 表查询组件中，更新表数据。如果删除成功，则执行两个方法：清空实体数据与刷新加载数据

componentDidUpdate () {
 let deletePostCollectionsResponse = this.props.postCollectionState.deletePostCollectionsResponse; //deletePostCollectionsResponse 删除的数据
 if (typeof(deletePostCollectionsResponse) != 'undefined') { //如果这个数据类型不是 undefined
 let status = deletePostCollectionsResponse.status; //获取到这个删除的数据状态
 if (200 == status) { //如果为200，删除成功
 this.props.clearPostCollection(); //加载清空实体数据的方法 clearPostCollection，就是从实体数据中删除被删除的数据
 let param = {
 activityId:this.props.postCollectionState.activityId 
 }
 this.props.initPostCollection(param); //根据ID重新加载剩余的数据
 }
 }
 }

清空实体

export const CLEAR_POST_COLLECTION = 'CLEAR_POST_COLLECTION';
export function clearPostCollection(){
 return {
 type: CLEAR_POST_COLLECTION,
 data:{ //实体中的数据名称
 addPostCollectionResponse:{},
 postCollections:[],
 deletePostCollectionsResponse:{},
 postCollectionName:'',
 postNumber:'0',
 postFieldList:[]
 }
 }
}

所有代码结构，含一个api，一个action，两个component，一个reducers

api(查询 / 删除)

//查询
searchPostCollectionByActivityId(activityId, callback) {
 const queryParam = `/tob/post/search?activeId=${activityId}`;
 Config.get(queryParam, callback);
 }

//删除
deletePostCollections (activityId ,params, callback) {
 let path = `/tob/post/deletePostCollection/${activityId}`;
 Config.deleteWithNoResponse(path ,params, callback);
 }

action(查询方法 / 更新选中实体数据方法 / 删除方法 / 清空实体数据方法 )

//查询表数据
export function initPostCollection(row){
 return (dispatch, getState) => {
 let activityId = row.activityId;
 Api.searchPostCollectionByActivityId(activityId, params => {
 dispatch(initPostCollectionSetter(activityId,params));
 });
 }
}
function initPostCollectionSetter(activityId,params){
 return {
 type:INIT_POST_COLLECTION,
 activityId:activityId,
 data:{postCollectionEntityList:params}
 }
}

//更新选中实体数据
export function formatPostCollectionList(row) {
 return(dispatch, getState) => {
 let postCollectionId = row.postCollectionId;
 let state = getState().postCollectionState;
 let postCollections = state.postCollections;
 let postCollectionItem = {
 postCollectionId:postCollectionId
 };
 if (postCollections) {
 let index = -1;
 for (let i = 0 ;i < postCollections.length ;i++) {
 let postCollection = postCollections[i];
 let id = postCollection.postCollectionId;
 if (postCollectionId == id) {
 index = i;
 }
 }
 if (index > -1) {
 postCollections.splice(index,1);
 } else {
 postCollections.push(postCollectionItem);
 }
 } else {
 postCollections = [];
 postCollections.push(postCollectionItem);
 }
 dispatch(formatPostCollectionListSetter(postCollections));
 }
}
function formatPostCollectionListSetter(params){
 return {
 type:SET_POST_COLLECTIONS,
 data:{postCollections:params}
 }
}

//删除方法
export const DELETE_POST_COLLECTIONS = 'DELETE_POST_COLLECTIONS';
export function deletePostCollections(){
 return(dispatch, getState) => {
 let state = getState().postCollectionState;
 let activityId = state.activityId;
 let postCollections = state.postCollections;
 Api.deletePostCollections(activityId ,postCollections, params => {
 dispatch(deletePostCollectionsSetter(params));
 });
 }
}
function deletePostCollectionsSetter(params){
 alertPre("",params);
 return {
 type:DELETE_POST_COLLECTIONS,
 data:{deletePostCollectionsResponse:params}
 }
}

//清空实体数据
export const CLEAR_POST_COLLECTION = 'CLEAR_POST_COLLECTION';
export function clearPostCollection(){
 return {
 type: CLEAR_POST_COLLECTION,
 data:{
 addPostCollectionResponse:{},
 postCollections:[],
 deletePostCollectionsResponse:{},
 postCollectionName:'',
 postNumber:'0',
 postFieldList:[]
 }
 }
}

component(BtnDelData.js / TableData.js (checkbox))

//删除按钮组件
import React,{Component} from 'react';
import {render} from 'react-dom';
import ReactBootstrap , {ButtonToolbar,Button,Pagination} from 'react-bootstrap';

export default class BtnDelData extends Component {
 constructor(props){
 super(props);
 }

 render(){
 let dis = true;
 let postCollections = this.props.postCollectionState.postCollections;
 if (typeof(postCollections) == 'undefined' || postCollections.length == 0) {
 dis = true;
 } else {
 dis = false;
 }

 const buttonsInstanceDel = (
 <ButtonToolbar className="mb10">
 <Button bsStyle="danger" disabled={dis} onClick={this.props.deletePostCollections}>删除贴子集</Button>
 </ButtonToolbar>
 );

 return(
 <div>
 {buttonsInstanceDel}
 </div>
 )
 }
}

//表组件
import React, {Component} from 'react';
import {render} from 'react-dom';
import ReactBootstrap , {ButtonToolbar,Button,Pagination,Grid,Row,Col} from 'react-bootstrap';
import { Router, Route, IndexRoute, Link, IndexLink, browserHistory } from 'react-router';
const ACTIVE = { color: 'red' };
import {sessionSetItem,sessionGetItem} from 'storage';

import BtnAddData from './BtnAddData.js';
import BtnDelData from './BtnDelData.js';

//引用公共组件
import TableExit from 'public_component/table/TableExit.js';
import TableCloumnsExit from 'public_component/table/TableCloumnsExit.js';

//跳转路径
import {invitation_main_path,post_collection_main_path,activity_main_path,question_bank_main_path} from '/build/config.js';



export default class TableData extends Component {
 constructor(props){
 super(props);
 }

 componentDidMount() {
 const param = this.props.queryData;
 console.log("param === " + param);
 this.props.initPostCollection(param);
 }

 componentDidUpdate () {
 let deletePostCollectionsResponse = this.props.postCollectionState.deletePostCollectionsResponse;
 if (typeof(deletePostCollectionsResponse) != 'undefined') {
 let status = deletePostCollectionsResponse.status;
 if (200 == status) {
 this.props.clearPostCollection();
 let param = {
 activityId:this.props.postCollectionState.activityId
 }
 this.props.initPostCollection(param);
 }
 }
 }

 //修改
 activeFormatter(cell,row) {
 return <Button bsStyle="primary" onClick={this.props.sendPostCollection.bind(null,row)}>推送</Button>

 }

 checkboxFormatter(cell,row) {
 return <input bsStyle="primary" type="checkbox" onClick={this.props.formatPostCollectionList.bind(this,row)}></input>
 }

 //修改
 postCollectionFormatter(cell,row) {
 return <Link to={{ pathname:post_collection_main_path, query: row}} activeStyle={ACTIVE}>修改</Link>
 }

 questionBankFormatter(cell,row) {
 return <Link to={{ pathname: question_bank_main_path, query: row}} activeStyle={ACTIVE} >查看题库</Link>
 }

 render(){

 let postCollectionEntityList = [
 {
 postCollectionName:'',
 postCollectionId:'',
 activityId:''
 }
 ];

 if (this.props.postCollectionState.postCollectionEntityList) {
 postCollectionEntityList = this.props.postCollectionState.postCollectionEntityList;
 console.log("postCollectionEntityList" + postCollectionEntityList);
 }

 //let postCollectionEntityList = this.props.postCollectionState.postCollectionEntityList;

 //添加与删除
 const gridInstance = (
 <Grid className="mb5">
 <Row className="show-grid">
 <Col sm={1} mdPush={-7}><BtnAddData {...this.props} activityParam={this.props.queryData} /></Col>
 <Col sm={1}><BtnDelData {...this.props} /></Col>
 </Row>
 </Grid>
 );

 //acb 表数据
 return(
 <div>
 {gridInstance}
 <TableExit data={postCollectionEntityList} acb={this.props.initPostCollection}>
 <TableCloumnsExit dataField="alter" dataFormat={this.checkboxFormatter.bind(this)}>选择</TableCloumnsExit>
 <TableCloumnsExit dataField="activityTitle">活动名称</TableCloumnsExit>
 <TableCloumnsExit dataField="postCollectionName">帖子集名称</TableCloumnsExit>
 <TableCloumnsExit dataField="postCollectionId">帖子集编号</TableCloumnsExit>
 <TableCloumnsExit dataField="active" dataFormat={this.postCollectionFormatter}>修改</TableCloumnsExit>
 <TableCloumnsExit dataField="send" dataFormat={this.activeFormatter.bind(this)}>发送</TableCloumnsExit>
 <TableCloumnsExit dataField="send" dataFormat={this.questionBankFormatter.bind(this)}>题库</TableCloumnsExit>
 </TableExit>
 <ButtonToolbar>
 <Link className="btn btn-primary" to={{ pathname:activity_main_path}}>返回到活动界面</Link>
 </ButtonToolbar>
 </div>
 );
 }
}

reducers (state合并)

以上为删除功能的用法。

这篇react.js CMS 删除功能的实现方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。