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react.js CMS 删除功能的实现方法

页面效果图:

数据操作分析:

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:

查询操作

1、调查询接口,Api中的方法

rush:js;"> 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

<div class="jb51code">
<pre class="brush:js;">
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

rush: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);//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 <a href="https://www.jb51.cc/tag/datafield/" target="_blank" class="keywords">datafield</a>="activityTitle"&gt;活动<a href="https://www.jb51.cc/tag/mingcheng/" target="_blank" class="keywords">名称</a></TableCloumnsExit>
      <TableCloumnsExit <a href="https://www.jb51.cc/tag/datafield/" target="_blank" class="keywords">datafield</a>="postCollectionName"&gt;帖子集<a href="https://www.jb51.cc/tag/mingcheng/" target="_blank" class="keywords">名称</a></TableCloumnsExit>
      <TableCloumnsExit <a href="https://www.jb51.cc/tag/datafield/" target="_blank" class="keywords">datafield</a>="postCollectionId"&gt;帖子集编号</TableCloumnsExit>
      <TableCloumnsExit dataField="active" dataFormat={this.postCollectionFormatter}><a href="https://www.jb51.cc/tag/xiugai/" target="_blank" class="keywords">修改</a></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

删除接口,API中的方法

rush:js;"> deletePostCollections (activityId,params,callback) { let path = `/tob/post/deletePostCollection/${activityId}`; //删除接口 Config.deleteWithnoresponse(path,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

rush:js;"> checkBoxFormatter(cell,row) { return sstyle="primary" type="checkBox"> }

查询表中使用 checkBox

rush:js;"> 选择

点击 checkBox 会触发 更新选中的实体数据的方法

rush:js;"> checkBoxFormatter(cell,row) { return }

更新选中实体数据的方法

,在action中编写

{ 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

{ 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 } }

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

rush:js;"> render(){ let dis = true; //删除按钮状态,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"&gt;
    <Button bsStyle="danger" disabled={dis} onClick={this.props.deletePostCollections}><a href="https://www.jb51.cc/tag/shanchu/" target="_blank" class="keywords">删除</a>贴子集</Button> //红色字体标为 <a href="https://www.jb51.cc/tag/shanchu/" target="_blank" class="keywords">删除</a>数据的<a href="https://www.jb51.cc/tag/fangfa/" target="_blank" class="keywords">方法</a>
  </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

rush:js;"> 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

rush:js;"> 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)

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

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

//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,params => {
dispatch(deletePostCollectionsSetter(params));
});
}
}
function deletePostCollectionsSetter(params){
alertPre("",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:{},postFieldList:[]
}
}
}

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

rush:js;"> //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"&gt;
    <Button bsStyle="danger" disabled={dis} onClick={this.props.deletePostCollections}><a href="https://www.jb51.cc/tag/shanchu/" target="_blank" class="keywords">删除</a>贴子集</Button>
  </ButtonToolbar>
);

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

}
}

//表组件
import React,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

}

checkBoxFormatter(cell,row)}>
}

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

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

render(){

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

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

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

//<a href="https://www.jb51.cc/tag/tianjia/" target="_blank" class="keywords">添加</a>与<a href="https://www.jb51.cc/tag/shanchu/" target="_blank" class="keywords">删除</a>
const gridInstance = (
  <Grid className="mb5"&gt;
    <Row className="show-grid"&gt;
      <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 <a href="https://www.jb51.cc/tag/datafield/" target="_blank" class="keywords">datafield</a>="activityTitle"&gt;活动<a href="https://www.jb51.cc/tag/mingcheng/" target="_blank" class="keywords">名称</a></TableCloumnsExit>
      <TableCloumnsExit <a href="https://www.jb51.cc/tag/datafield/" target="_blank" class="keywords">datafield</a>="postCollectionName"&gt;帖子集<a href="https://www.jb51.cc/tag/mingcheng/" target="_blank" class="keywords">名称</a></TableCloumnsExit>
      <TableCloumnsExit <a href="https://www.jb51.cc/tag/datafield/" target="_blank" class="keywords">datafield</a>="postCollectionId"&gt;帖子集编号</TableCloumnsExit>
      <TableCloumnsExit dataField="active" dataFormat={this.postCollectionFormatter}><a href="https://www.jb51.cc/tag/xiugai/" target="_blank" class="keywords">修改</a></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)

以上为删除功能用法

这篇react.js CMS 删除功能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编程之家。

原文地址:https://www.jb51.cc/js/39933.html

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