Duplicate Prevent Lead Based On Email

Requirement: Write a trigger to prevent duplicate Email on Lead Object

Solution:


trigger leadDuplicatePreventer on Lead (before insert, before update) {
Map<String, Lead> leadMap = new Map<String, Lead>();
for (Lead lead : System.Trigger.new) {
if ((lead.Email != null) &&
    (System.Trigger.isInsert || (lead.Email != System.Trigger.oldMap.get(lead.Id).Email))) {
if (leadMap.containsKey(lead.Email)) {
  lead.Email.addError('Another new lead has the ' + 'same email address.');
} else { 
    leadMap.put(lead.Email, lead); 
}
}
}
for (Lead lead : [SELECT Email FROM Lead WHERE Email IN :leadMap.KeySet()]) {
Lead newLead = leadMap.get(lead.Email);
newLead.Email.addError('A lead with this email ' + 'address already exists.');
}
}

                             Thanks,
                           Sumit Shukla

Comments

Post a Comment

Popular Post

Copy Billing Address to Shipping Address on VF Page Using JavaScript

Image
Class Code public class CopyAddressFromBillToShip{     public String BCountry { get; set; }     public String BZip { get; set; }     public String BState { get; set; }     public String BCity { get; set; }     public String BStreet { get; set; }     public String SCountry { get; set; }     public string SZip { get; set; }     public String SState { get; set; }     public String SCity { get; set; }     public String SStreet { get; set; } } Page Code <apex:page controller="CopyAddressFromBillToShip" >    <apex:form id="myform">     <script type="text/javascript">         function addressCopy(bstreet1, bcity1, bstate1, bPostalCode1, bcountry1, sstreet1, scity1, sstate1, SPostalCode1, scountry1) {     document.getElementById(sstreet1).value = document.getElementById(bstreet1).value;   ...
Read more

How to use Comparable Interface in Salesforce

Image
The Comparable interface use for sorting : Lists that contain non-primitive data types, that is, Lists of user-defined types. In Apex you need to implement the Comparable interface with its compareTo method in your class. When a class implements the Comparable interface it has to implement a method called compareTo().  In this method the code has to be verified if two objects match or if one is larger than the other. Class Code global class  CamprableInterfaceExampleController {     public List<WrapperClass> WrapperList {get;set;}        public CamprableInterfaceExampleController () {         WrapperList = new List<WrapperClass>();         WrapperClass s1 = new WrapperClass('Sumit', 22);         WrapperList.add(s1);                  WrapperClass s2 = new WrapperClass ('Amit', 15);         Wrap...
Read more

Get list of Key Prefix of Sobject in Salesforce

Image
Requirement:  Show the list of Key Prefix of Sobject in salesforce Solution: Class Code: public class populateObjectsAndKeyPrefixController {      public List<Schema.SObjectType> lstofSType {get;set;}       public List<SObjectInfo> lstofSobject {get;set;}           public class SObjectInfo {         public String prefix {get;set;}         public String name {get;set;}     }        public gettingObjectsAndKeyPrefix(){                        lstofSType  = Schema.getGlobalDescribe().Values();         lstofSobject = new List<SObjectInfo>();         for(Schema.SObjectType f : lstofSType )         {             SObjectInfo sobjectinfo = new SObjectInfo();   ...
Read more