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Creating Custom Related List on Contracts Using Controller Extension
I'm trying to build my first actual visualforce page on my own (well, borrowing heavily from examples). And this is what I get for being too uppity. I'm stuck.
My Goal:
Create a custom list on Contracts that shows all related Opportunities (where Contract__c on the Opportunity = the currently viewed Contract Id) on the Contract page layout. Eventually, I want to create a total of the Amounts and use this to compare to the total contract value. (We have a data model where many opps can be related to one contract.)
What I Was Thinking:
I created a Contract controller extension, borrowing from this other post and following the directions here.
public class ContractExtension { public List<Opportunity> ChildOpportunities = new Opportunity[]{}; public List<Opportunity> getContractOpps() { ChildOpportunities = [SELECT o.Contract__r.Id, Amount, Id, StageName, CloseDate FROM Opportunity o WHERE o.Contract__r.Id = :System.currentPageReference().getParameters().get('id') ]; return ChildOpportunities; } }
But, when I include the reference to the extension on my visualforce page, I get an error. "Unknown constructor 'ContractExtension.ContractExtension(Apex.Pages.StandardController controlller)'Here's my page:
<apex:page standardController="Contract" extensions="ContractExtension"> <apex:detail id="ChildOpps_v1" relatedList="true"> <apex:relatedList id="ChildOpportunities" list="Opportunities" title="Child Opportunities" subject="{!ContractOpps}"> </apex:relatedList> </apex:detail> </apex:page>
Any helpful tips for a vf newbie?
You need define a
private final Contract contr;
variable and then assign it as following in the constructor:
this.contr= (Contract)stdController.getRecord();
All Answers
Hi
You have missed out the constructor in your extension code. Include the below code inside your class.
public ContractExtension(ApexPages.StandardController controller) {
}
Hope it works.
-AJ
I did try that before and tried it again, but then I get an "Unknown constructor 'ContractExtension.ContractExtension(ApexPages.StandardController controller)' error.
You need define a
private final Contract contr;
variable and then assign it as following in the constructor:
this.contr= (Contract)stdController.getRecord();