[SalesForce] Problem in IsInsert and IsDelete in apex trigger

When i tried to delete records my trigger generate error of null value.

Trigger

trigger SubscriberUpdateTrigger on Subscriber__c (after Insert, after Update, after delete) {

for(Subscriber__c subs : Trigger.new){           
    if(subs.Active_Subscriber__c == true && subs.Auto_Telemedicine__c == true){

        if(Trigger.isInsert){
            new MDLiveIntegration().contactValue(Trigger.new);    

            if(system.isFuture()) 
               return;

            MDLiveIntegration mdInsert = new MDLiveIntegration();

            MDLiveIntegration.insertSubs(subs.Id);                
        }

        if(Trigger.isDelete){

            new MDLiveIntegration().contactValue(Trigger.new);

            MDLiveIntegration mdInsert = new MDLiveIntegration();
            MDLiveIntegration.deleteSubs(subs.Subscriber_Id__c);    

        }           
    }           
}        
}

get error in line for(Subscriber__c subs : Trigger.new){ of null value.
Give me any suggestion.

Thanks
Vimal

Best Answer

Trigger.new Returns a list of the new versions of the sObject records. Note that this sObject list is only available in insert and update triggers, and the records can only be modified in before triggers.

See for more details: https://www.salesforce.com/us/developer/docs/apexcode/Content/apex_triggers_context_variables.htm

So you need to work around the scenario when it is a delete trigger. E.g. use Trigger.Old in that case.

Related Solutions

[SalesForce] Exeception on After Insert, Record is read only

The record is locked because you are catching the record after the insert DML statement has happened. So if you'd like to modify this record (or records), you will need to query anew, modify, then execute another DML statement.

Here is an example of how you could modify your trigger to work:

trigger SetProductCategory on OpportunityLineItem (after insert) {

    List<OpportunityLineItem> olis = [SELECT Id, PricebookEntry.Product2.Product_Category_new__c FROM OpportunityLineItem WHERE Id IN: Trigger.newMap.keySet()];

    for (OpportunityLineItem opplineitem: olis){
        opplineitem.Product_Category__c= opplineitem.PricebookEntry.Product2.Product_Category_new__c;
    }

    update olis;

}

And of course, since it's a trigger, we want to be sure to work in batches -- that's why I'm updating a list of olis rather than an individual opp line item.

[SalesForce] Access parent object field in apex trigger

Trigger.new or Trigger.old contains only Object information, not any relationship fields.

You could make the trigger to 'after insert, after update'

Then use

For(Opportunity opp : [SELECT Email__c, Account.Account_Email__c FROM Opportunity Where Id IN: trigger.new){
// your code
}

Btw, using before insert you can't update parent object fields with out using DML statements

So, you need to modify the program and update parent Accounts using DML

Trigger

Best Answer

Related Solutions

[SalesForce] Exeception on After Insert, Record is read only

[SalesForce] Access parent object field in apex trigger

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