salesforce 零基础学习（五十）自定义View或者List以及查看系统原来的View或者List

salesforce给我们提供了标准的页面，比如标准的页面包括标准的列表和标准的详细页视图。有的时候我们想要自定义视图，比如做一个项目的时候不希望使用者直接通过ID查看到标准的详细页，而是跳转到指定处理过的详细页，这个时候做法如下：

1.创建相关详细页的Controller，此Controller的构造函数应涵盖ApexPages.StandardController,ApexPages.StandardSetController两个参数

 public without sharing class CompanyDetailController {
     private Map<String,String> params;     public Company_Info__c companyInfo{get;set;}     public CompanyDetailController(ApexPages.StandardController controller) {
         init();
     }     public CompanyDetailController(ApexPages.StandardSetController controller) {
         init();
     }     public void init() {
         params = ApexPages.currentPage().getParameters();
         String companyInfoId = params.get('id');
         String fetchCompanyInfo = 'SELECT Company_Code_Unique__c, Company_Name__c, Company_Phone__c, Company_Place__c, Company_Type__c, CreatedDate,Employees_Number__c, Id FROM Company_Info__c where Id = :companyInfoId';
         List<Company_Info__c> companyInfoList = Database.query(fetchCompanyInfo);
         if(companyInfoList == null || companyInfoList.size() == 0) {
             companyInfo = null;
         } else {
             companyInfo = companyInfoList.get(0);
         }
     }
 }

CompanyDetailController

2.创建相应的page，此page用于显示view的布局

 <apex:page standardController="Company_Info__c" extensions="CompanyDetailController">
     <apex:pageBlock >
         <apex:panelGrid columns="2" style="width:100%;" rendered="{!companyInfo == null}">
             不存在此ID对应的记录，请重新检查相关ID
         </apex:panelGrid>
         <apex:panelGrid columns="2" style="width:100%;" rendered="{!companyInfo != null}">
             <apex:outputLabel value="{!$ObjectType.Company_Info__c.Fields.Company_Code_Unique__c.Label}" style="color: #830051;line-height: 24px;"/>
             <apex:outputLabel value="{!companyInfo.Company_Code_Unique__c}"/>             <apex:outputLabel value="{!$ObjectType.Company_Info__c.Fields.Company_Name__c.Label}" style="color: #830051;line-height: 24px;"/>
             <apex:outputLabel value="{!companyInfo.Company_Name__c}"/>             <apex:outputLabel value="{!$ObjectType.Company_Info__c.Fields.Company_Phone__c.Label}" style="color: #830051;line-height: 24px;"/>
             <apex:outputLabel value="{!companyInfo.Company_Phone__c}"/>             <apex:outputLabel value="{!$ObjectType.Company_Info__c.Fields.Company_Place__c.Label}" style="color: #830051;line-height: 24px;"/>
             <apex:outputLabel value="{!companyInfo.Company_Place__c}"/>             <apex:outputLabel value="{!$ObjectType.Company_Info__c.Fields.Company_Type__c.Label}" style="color: #830051;line-height: 24px;"/>
             <apex:outputLabel value="{!companyInfo.Company_Type__c}"/>                            <apex:outputLabel value="{!$ObjectType.Company_Info__c.Fields.Employees_Number__c.Label}" style="color: #830051;line-height: 24px;"/>
             <apex:outputLabel value="{!companyInfo.Employees_Number__c}"/>
         </apex:panelGrid>
     </apex:pageBlock>
 </apex:page>

CompanyDetailPage

3.修改Company Info这个object的view，修改成override with visualforce Page