Controller method doesn't load with custom component and email template

Question

I develop an email template which calls a Visualforce component with a custom controller (controller of the custom component).

I give an opportunity Id to my custom component and I would like load data (opportunity related lists) in the custom controller but it doesn't work.

I manage to forward the opportunity Id to the custom component which assign to a controller variable but in my controller, the variable is null..

This is the email template :

<messaging:emailTemplate subject="Quote Support" recipientType="Contact" relatedToType="Opportunity">

<messaging:htmlEmailBody >

    <c:C01_SendEmailOpportunitySupport oppId="{!relatedTo.Id}" />

</messaging:htmlEmailBody>

The Visualforce component :

<apex:component controller="CC01_SendEmailOpportunitySupport" access="global">

<apex:attribute name="oppId" type="Id" description="Id of the opportunity" assignTo="{!opportunityId}"/>

...

</apex:component>

The custom controller :

public class CC01_SendEmailOpportunitySupport{

    public Id opportunityId{get;set;}
    public Opportunity theOpportunity{get; set;}
    public String theDate{get; set;}
    private DateTime theNow;
    public OpportunityContactRole theOpportunityContactRole{get; set;}

    public CC01_SendEmailOpportunitySupport(){
        System.debug('*** parameters : ' + ApexPages.currentPage().getParameters().get('oppId'));

        init();
    }

    public void init(){
        System.debug('*** opportunityId : ' + opportunityId);

        this.theOpportunity = this.getTheOpportunityById(this.opportunityId);
        System.debug('*** theOpportunity : ' + theOpportunity );

        this.theOpportunityContactRole= this.getThePrimaryContact(this.opportunityId);
        System.debug('*** theOpportunityContactRole: ' + theOpportunityContactRole);

        this.theNow = DateTime.now();
        this.TheDate = this.theNow.day() + '/' + this.theNow.month() + '/' + this.theNow.year() + ' ' + this.theNow.hour() + ':' + this.theNow.minute();
    }
}

I guess the custom controller is loaded before the variable is assigned.

Please, someone can say to me how I I can assign the variable opportunityId?

Answer 1

Component's controller initialization is bit different to normal controllers/ extensions. In case of a component controller. As I've observed, the setters are invoked before constructor. So, you should be able to tweak your code like this:-

Component

<apex:component controller="CC01_SendEmailOpportunitySupport" access="global">

<apex:attribute name="oppId" type="Id" description="Id of the opportunity" assignTo="{!opportunityId}"/>

{!LoadData}
...

</apex:component>

Controller:

public class CC01_SendEmailOpportunitySupport{

    public Id opportunityId{get;set;}
    public Opportunity theOpportunity{get; set;}
    public String theDate{get; set;}
    private DateTime theNow;
    public OpportunityContactRole theOpportunityContactRole{get; set;}

    public string getLoadData(){

        init();
        return '';//dummy return string
    }

    public void init(){
        System.debug('*** opportunityId : ' + opportunityId);

        this.theOpportunity = this.getTheOpportunityById(this.opportunityId);
        System.debug('*** theOpportunity : ' + theOpportunity );

        this.theOpportunityContactRole= this.getThePrimaryContact(this.opportunityId);
        System.debug('*** theOpportunityContactRole: ' + theOpportunityContactRole);

        this.theNow = DateTime.now();
        this.TheDate = this.theNow.day() + '/' + this.theNow.month() + '/' + this.theNow.year() + ' ' + this.theNow.hour() + ':' + this.theNow.minute();
    }
}

Answer 2

Simple test : On your Visual for component add a line that says

hello opportunity Id : {!opportunityId}

<apex:component controller="CC01_SendEmailOpportunitySupport" access="global">
<apex:attribute name="oppId" type="Id" description="Id of the opportunity" assignTo="{!opportunityId}"/>
hello opportunity Id is : {!opportunityId}
</apex:component>

Go back to your template and click on Send Test and Verify Merge Fields, pick a user, pick an oppty and you should see a html preview as below

hello opportunity Id is : 006d0000005z1IZAAY