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Shavi DabgotraShavi Dabgotra 

I have created a checkbox on opportunity as 'IsDeleted'. Whenever Whenever user mark this checkbox as true, opportunity record should get deleted.

Hi everyone!

I have created a checkbox on opportunity as 'IsDeleted'. Whenever user mark this checkbox as true, opportunity record should get deleted.
I am new to apex trigger. Can someone help me?
Thank you 
Best Answer chosen by Shavi Dabgotra
RituSharmaRituSharma
It was my bad. Use below code. It will immediately delete the record. So after saving the record, user will see the message saying that the record that you are trying to access has been deleted. If you want to change this behaviour so that after saving user is redirected to the same opp and system deletes the opportunity after sometime, add @future word just before the highlighted line.

Trigger
trigger DeleteonChecked on Opportunity (after update) {
    if(trigger.isAfter && trigger.isUpdate){
        OpportunityTriggerHandler.deleteOpportunities(trigger.newMap.keyset());
    }
}

Class
public class OpportunityTriggerHandler{
    public static void deleteOpportunities(Set<Id> oppIdSet) {
        List<Opportunity> deleteOppsList = [Select Id,IsDeleted__c from Opportunity where IsDeleted__c=true And Id In: oppIdSet];
        if(!deleteOppsList.isEmpty()) {
            delete deleteOppsList;
        }    
    }        
}

All Answers

RituSharmaRituSharma
Try below logic:

trigger OpportunityTrigger on Opportunity (after update) {
    List<Opportunity> deleteOppList = new List<Opportunity>();
    for(Opportunity opp: trigger.new) {
        if(opp.IsDeleted__c) {
            deleteOppList.add(opp);
        }    
    }

    if(!deleteOppList.isEmpty()) {
        delete deleteOppList;
    }
}
ANUTEJANUTEJ (Salesforce Developers) 
Hi Shavi,

In case if you want to delete multiple records you can check this implementation that has a way to select records and delete,

>> http://help.taskfeedapp.com/knowledgebase/articles/1108435-custom-mass-delete-board-button-classic-only

Let me know if it helps you and close your query by marking it as solved so that it can help others in the future.  

Thanks.

 
NewSFDCDeveloperNewSFDCDeveloper
Thanks RituSharma! I was looking for something similar.
Shavi DabgotraShavi Dabgotra
Hi RituSharma,
I have tried as you suggested but it is giving me error as DeleteonChecked: execution of AfterUpdate caused by: System.SObjectException: DML statement cannot operate on trigger.new or trigger.old Trigger.DeleteonChecked: line 10, column 1 salesforce
How to fix it?
Can someone help me in this?
Thanks in advance
RituSharmaRituSharma
Please share your exact code.
Shavi DabgotraShavi Dabgotra
Hi RituSharma,
Below is my code:
trigger DeleteonChecked on Opportunity (after update) {
 if(trigger.isAfter && trigger.isUpdate){
    List<Opportunity> deleteOppList = new List<Opportunity>();
    for(Opportunity opp: trigger.new) {
        if(opp.IsDeleted__c) {
            deleteOppList.add(opp);
        }    
    }

        delete deleteOppList;
    }
    }

Thank you 
RituSharmaRituSharma
It was my bad. Use below code. It will immediately delete the record. So after saving the record, user will see the message saying that the record that you are trying to access has been deleted. If you want to change this behaviour so that after saving user is redirected to the same opp and system deletes the opportunity after sometime, add @future word just before the highlighted line.

Trigger
trigger DeleteonChecked on Opportunity (after update) {
    if(trigger.isAfter && trigger.isUpdate){
        OpportunityTriggerHandler.deleteOpportunities(trigger.newMap.keyset());
    }
}

Class
public class OpportunityTriggerHandler{
    public static void deleteOpportunities(Set<Id> oppIdSet) {
        List<Opportunity> deleteOppsList = [Select Id,IsDeleted__c from Opportunity where IsDeleted__c=true And Id In: oppIdSet];
        if(!deleteOppsList.isEmpty()) {
            delete deleteOppsList;
        }    
    }        
}
This was selected as the best answer
Shavi DabgotraShavi Dabgotra
Could we done it only by triggers without using classes?
RituSharmaRituSharma
If you don't need to do it in futiure context, you can just achieve using trigger. But if you need to do in future context, class is must.

In either case, it's recommended to put the actual code in helper classes instead of putting the logic in trigger.

Please mark my answer as the best answer if it was helpful.