I have the following Visualforce page:

    <apex:page standardController="Lead" extensions="myExtension" showHeader="false" sidebar="false">
<apex:form >
<apex:commandLink action="{!URLFOR($Action.Lead.Convert, lead.id, [retURL=$CurrentPage.parameters.retURL, nooppti=1], true)}" value="Convert" target="_parent"/>

I need to write an Apex controller extension which sets a value (checkbox) before converting the lead. So I have now created a controller extension "myExtension". The checkbox on the lead object is called: lead_ok__c and it must be set to true, before converting the lead.

This is my controller so far:

        public class myExtension{
            public Lead currentLead {get;set;}

            public myExtension() {

            public PageReference setCheckbox(){
                currentLead = [SELECT Id, lead_ok__c FROM Lead WHERE
                                       Id =: ApexPages.currentPage().getParameters().get('id')];

                //then I need to set the checkbox to true: 
                lead_ok__c = true;

                //then I need to update the record on Salesforce
                update lead with lead_ok__c where Id = CurrentLeadIdFromVFPage;

            //then I need to invoke the lead convert action, ie 
            <apex:commandLink action="{!URLFOR($Action.Lead.Convert, lead.id, [retURL=$CurrentPage.parameters.retURL, nooppti=1], true)}" value="Convert" target="_parent"/>




The controller pattern to use here is a controller extension that has a constructor that takes an instance of the standard controller. There is also an Apex API for converting leads. Combining the two:

public with sharing class myExtension {

    private ApexPages.StandardController sc;

    public myExtension(ApexPages.StandardController sc) {
        this.sc = sc;

    public PageReference convert() {

        update new Lead(Id = sc.getId(), lead_ok__c = true);

        Database.LeadConvert lc = new Database.LeadConvert();

        LeadStatus convertStatus = [SELECT Id, MasterLabel FROM LeadStatus
                WHERE IsConverted=true LIMIT 1];

        Database.LeadConvertResult lcr = Database.convertLead(lc);
        if (lcr.isSuccess()) {
            return new PageReference('/' + lcr.getContactId());
        } else {
            for (Database.Error e : lcr.getErrors()) {
                ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.ERROR,
            return null;

And the Visualforce would change to:

<apex:commandButton action="{!convert}" value="Convert"/>
  • Thanks @Keith C. I am trying this now. So, on my Apex Page, instead of having that long URL action, I assume I will just write {!convert}, right? I now get a compile error for the invalid type in the line where it says: for (Error e : lcr.getErrors()) { Tia.
    – Lily
    Nov 24 '14 at 11:06
  • @Lily There were a couple of mistakes in the code - try the current version. and see the comment about the Visualforce too.
    – Keith C
    Nov 24 '14 at 11:12
  • Excellent. Thank you very much. This works very well now!!
    – Lily
    Nov 24 '14 at 11:16

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