react.js CMS 删除功能的实现

时间 2019-11-24

标签 react.js react cms 删除功能实现栏目 React 繁體版

原文原文链接

页面效果图：react

数据操做分析：bootstrap

在查询表组件的 TableData.js 中操做以下内容：
1. 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，须要export
  1. 定义每一行的实体为一个数组，用变量 postCollections 表示
  2. 若是选中当前行，则更新实体数组中的数据；若是取消当前行，则删除实体中的数据；
  3. 参数为 row ；
2. 点击删除按钮后，使用 componentDitUpdate() 生命周期方法，在组件更新后调用。
  1. 若是删除成功，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；
  2. 若是删除成功，最后执行查询表的刷新从新加载数据的方法
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：api

表查询操做

调查询接口，Api中的方法

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

action中操做查询数据的方法 postCollectionEntityList 存放接口中的全部数据

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} } }

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，若是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>
 ); } }

删除表数据操做

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++) { //若是实体中有数据，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，取每个ID，方法对比（选中的数据与实体中的数据对比） if (postCollectionId == id) { //若是实体中的ID == 选中的ID index = i; //把实体中选中的的数据 赋值为 i } } if (index > -1) { //若是实体的数据存在，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); //若是实体数据为空，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 } }

6. 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，判断是否可点击数组

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) { //若是实体中的数据为 undefined 或者 为空 dis = true; //若是实体中没有数据，则按钮状态为禁用状态 } else { dis = false; //若是实体中有数据，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>
 ) }

7. 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。若是删除成功，则执行两个方法：清空实体数据与刷新加载数据session

componentDidUpdate () { let deletePostCollectionsResponse = this.props.postCollectionState.deletePostCollectionsResponse; //deletePostCollectionsResponse 删除的数据 if (typeof(deletePostCollectionsResponse) != 'undefined') { //若是这个数据类型不是 undefined let status = deletePostCollectionsResponse.status; //获取到这个删除的数据状态 if (200 == status) { //若是为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从新加载剩余的数据 } } }

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:[] } } }

全部代码结构，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。react-router