Salesforce Aura开发 Component表单初解
初步了解了Lightning的组件开发流程后,我们来认识下lightning的表单
点击对象管理器,选择对象:电影(Movie__c),创建字段
标签 | API | 数据类型 |
票价 | Number__c | 数字(16,2) |
是否上映 | Flag__c | 复选框 |
关于对象电影的相关内容及相关组件请参考之前的博客内容:http://www.cnblogs.com/luqinghua/p/8979893.html
1.创建组件:MyTest_CreateMovie
1 <aura:component Controller="MyTestMovieController"> 2 <aura:attribute name="movieList" type="Movie__c[]"/> 3 <aura:attribute name="movie" type="Movie__c" 4 default="{'sobjectType':'Movie__c', 5 'Name':'', 6 'Director__c':'', 7 'ToStar__c':'', 8 'ShowTime__c':'', 9 'Number__c':0, 10 'Flag__c':false}"/> 11 <!-- 表头 --> 12 <lightning:layout class="slds-page-header slds-page-header--object-home"> 13 <lightning:layoutItem > 14 <lightning:icon iconName="standard:scan_card" alternativeText="新电影"/> 15 </lightning:layoutItem> 16 <lightning:layoutItem padding="horizontal-small"> 17 <div class="page-section page-header"> 18 <h1 class="slds-text-heading--label">电影</h1> 19 <h1 class="slds-text-heading--medium">新电影</h1> 20 </div> 21 </lightning:layoutItem> 22 </lightning:layout> 23 <!-- 电影字段列表 --> 24 <lightning:layout > 25 <lightning:layoutItem padding="around-small" size="6"> 26 <div aria-labelledby="newMovieForm"> 27 <fieldset class="slds-box slds-theme--default slds-container--small"> 28 <legend id="newMovieForm" class="slds-text-heading--small slds-p-vertical--medium"> 29 新建电影 30 </legend> 31 <form class="slds-form--stacked"> 32 <lightning:input aura:id="MovieForm" label="名称" 33 name="movieName" 34 value="{!v.movie.Name}" 35 required="true"/> 36 <lightning:input aura:id="MovieForm" label="导演" 37 name="movieDirector" 38 value="{!v.movie.Director__c}" 39 placeholder="请输入导演名称"/> 40 <lightning:input aura:id="MovieForm" label="主演" 41 name="movieToStar" 42 value="{!v.movie.ToStar__c}" 43 placeholder="请输入主演名称"/> 44 <lightning:input type="number" aura:id="MovieForm" label="票价" 45 name="movieNumber" 46 formatter="currency" 47 min="1" 48 step="0.5" 49 value="{!v.movie.Number__c}" 50 messageWhenRangeUnderflow="票价最低1元"/> 51 <lightning:input type="date" aura:id="MovieForm" label="上映时间" 52 name="movieShowTime" 53 value="{!v.movie.ShowTime__c}"/> 54 <lightning:input type="checkbox" aura:id="MovieForm" label="是否上映" 55 name="movieFlag" 56 checked="{!v.movie.Flag__c}"/> 57 <lightning:button label="加入电影列表" 58 class="slds-m-top--medium" 59 variant="brand" 60 onclick="{!c.AddToList}"/> 61 </form> 62 </fieldset> 63 </div> 64 </lightning:layoutItem> 65 </lightning:layout> 66 </aura:component>
将该组件放在 My_Test.app中并预览
可以看到如上图所示的一个表单,包含了常用的复选框,日期,数字,文本等类型,然后是完成后面的创建方法
2.补充MyTest_CreateMovieController.js
1 ({ 2 AddToList : function(component, event, helper) { 3 //系统提供的校验错误信息的标准方法可校验必填项以及最小值等等 4 var validExpense = component.find('MovieForm').reduce(function (validSoFar, inputCmp) { 5 // 显示填写错误的字段消息 6 inputCmp.showHelpMessageIfInvalid(); 7 return validSoFar && inputCmp.get('v.validity').valid; 8 }, true); 9 // 通过字段校验后继续创建的逻辑 10 if(validExpense){ 11 // 创建一条记录 12 var movie = component.get("v.movie"); 13 console.log("传入的电影信息: " + JSON.stringify(movie)); 14 helper.createMovie(component, movie); 15 //将表单重置 16 component.set("v.movie",{'sobjectType':'Movie__c', 17 'Name':'', 18 'Director__c':'', 19 'ToStar__c':'', 20 'ShowTime__c':'', 21 'Number__c':0, 22 'Flag__c':false}); 23 } 24 } 25 })
在MyTest_CreateMovieController.js中完成对表单数据的基本校验,比如表单的必填项,以及设置的票价不小于1元等等
3.补充MyTest_CreateMovieHelper.js
({ createMovie : function(component, movie) { //调用Apex类中的方法 var action = component.get("c.saveMovie"); //传递参数 action.setParams({ "movie": movie }); //方法调用 action.setCallback(this, function(response){ //方法调用状态 var state = response.getState(); if (state === "SUCCESS") { var movieList = component.get("v.movieList"); movieList.push(response.getReturnValue()); component.set("v.movieList", movie); } }); var movie = component.get("v.movie"); $A.enqueueAction(action); } })
MyTest_CreateMovieHelper.js中主要是与后台APEX控制类中的方法进行交互,将数据存入数据库中保存起来
4.更新MyTestMovieController类,在其中加入saveMovie方法
1 /********* 2 * Author:ricardo 3 * Time:2018-03-21 4 * Function:MyTest_Movie 后台控制类 5 * Test: 6 */ 7 public class MyTestMovieController{ 8 //初始化 9 @AuraEnabled 10 public static List<Movie__c> GetAll(){ 11 List<Movie__c> movieList = new List<Movie__c>(); 12 movieList = [select ShowTime__c,ToStar__c,Theme__c,Director__c,Name from Movie__c limit 50]; 13 return movieList; 14 } 15 //创建记录 16 @AuraEnabled 17 public static Movie__c saveMovie(Movie__c movie) { 18 // Perform isUpdatable() checking first, then 19 upsert movie; 20 return movie; 21 } 22 }
综上所示,一个简单的创建电影条目的表单就完成了,打开组件MyTest_Movie就能看到我们新创建的电影记录位列其中,如有遗漏欢迎指正,有问题可在评论区留言
本文来自博客园,作者:Ricardo.M.Lu,转载请注明原文链接:https://www.cnblogs.com/luqinghua/p/9072970.html