How to Write Salesforce Triggers for this Scenario?

Hi Pavan,

You can achieve it in before Insert and before update of the contact.

PFB the code for the same -

public class ContactTriggerHelper {
    
    /* *call this method on before Insert and before upate of Contact
     * before insert -
     * Parameters - Trigger.New, null
     * 
     * before update -
     * Parameters - Trigger.New, Trigger.oldMap
     *  */
    public static void contactDateUpdate(List<Contact> newList, Map<Id, Contact> oldMap){
        Map<Id, List<Contact>> 	accContactMap 	= new Map<Id, List<Contact>>();
        
        for(Contact con : newList){
            if(oldMap == null && con.AccountId != null){
                if(accContactMap.containsKey(con.AccountId)){
                    accContactMap.get(con.AccountId).add(con);
                }else{
                    accContactMap.put(con.AccountId, new List<Contact>{con});
                }
            }else if(oldMap != null && con.AccountId != null && (con.MyDate__c == null || con.MyDate__c != oldMap.get(con.Id).MyDate__c)){
                if(accContactMap.containsKey(con.AccountId)){
                    accContactMap.get(con.AccountId).add(con);
                }else{
                    accContactMap.put(con.AccountId, new List<Contact>{con});
                }
            }
        }
        
		Map<Id, Account> accountMap	= new Map<Id, Account>([SELECT Id, MyDate__c FROM Account WHERE Id IN: accContactMap.keySet()]);        
        for(Id accId : accContactMap.keySet()){
            for(Contact con : accContactMap.get(accId)){
                con.MyDate__c = accountMap.get(accId).MyDate__c.addMonths(1);
            }
        }
    }
}

I hope this will help.

Thanks

Avinash

• This reply was modified 7 years, 9 months ago by  Jade.
• This reply was modified 7 years, 9 months ago by  Jade.
• This reply was modified 7 years, 9 months ago by  Jade.