Visualforce - Beyond Basics Series 47 - Extend standard sObject

What is the purpose of extending the sObject ?

There's no inheritance to standard sObject. So, if one wants to extend the record, one need to create a wrapper to store the record inside it.

How to do that ?

The wrapper is a Apex Class which will have the record and other extended fields. So, in visualforce page, both standard and extended fields can be used seamlessly.

Where is the Code ?

	<apex:page controller="testclass6_22022017">
	<apex:sectionHeader title="Extend the Standard Opportunity Object"/>
	<!-- Show Opportunty Standard Fields -->
	<apex:sectionHeader subtitle="Standard Fields"/>
	<apex:outputPanel layout="block">
	<apex:outputLabel value="Name - "/>
	<apex:outputText value="{!oppWrapObj.opp.Name}"/>
	</apex:outputPanel>
	<apex:outputPanel layout="block">
	<apex:outputLabel value="StageName - "/>
	<apex:outputText value="{!oppWrapObj.opp.StageName}"/>
	</apex:outputPanel>
	<!-- Show Opportunty Extended Fields -->
	<apex:sectionHeader subtitle="Extended Fields"/>
	<apex:outputPanel layout="block">
	<apex:outputLabel value="Generic Name - "/>
	<apex:outputText value="{!oppWrapObj.genericName}"/>
	</apex:outputPanel>
	<apex:outputPanel layout="block">
	<apex:outputLabel value="Open Date - "/>
	<apex:outputText value="{!oppWrapObj.openDate}"/>
	</apex:outputPanel>
	</apex:page>

view raw gistfile1.txt hosted with ❤ by GitHub

	public class testclass6_22022017 {
	public OpportunityWrapper oppWrapObj {get;set;}
	public testclass6_22022017() {
	oppWrapObj = new OpportunityWrapper(ApexPages.currentPage().getParameters().get('Id'));
	}
	class OpportunityWrapper {
	Public String genericName{get;set;}
	Public Date openDate{get;set;}
	Public Opportunity opp{get;set;}
	Public OpportunityWrapper(Id oppId) {
	opp = [Select Id, Name, StageName From Opportunity Where Id =: oppId];
	genericName = 'Test Opp Generic Name';
	openDate = System.Today() + 20;
	}
	}
	}

view raw gistfile1.txt hosted with ❤ by GitHub

Any Screenshots ?

Walk through in a video ?