MyTigger:
trigger InvoiceStock on Tissus__c (after insert, after update, after delete) {
for(Tissus__c tnew : Trigger.New)
for(Tissus__c told : Trigger.Old){
if(tnew.Name == told.Name)
tnew.stock_actuel__c = told.stock_actuel__c ;
}
}
the Exception:
Error: Invalid Data. Review all error messages below to correct your data.Apex trigger InvoiceStock caused an unexpected exception, contact your administrator: InvoiceStock: execution of AfterInsert caused by: System.NullPointerException: Attempt to de-reference a null object: Trigger.InvoiceStock: line 3, column 1Hi Nejib, Please try with the below code :
Let me know if you have any issue.Thanks,Abhishektrigger InvoiceStock on Tissus__c (before insert) {
Set<String> tissusNameSet = new Set<String>();
for(Tissus__c tiss : trigger.new){
tissusNameSet.add(tiss.Name);
}
Map<String,Tissus__c> mapOfTissus = new Map<String,Tissus__c>();
for(Tissus__c tiss : [Select Name,stock_actuel__c from Tissus__c where name In : tissusNameSet]){
mapOfTissus.put(tiss.Name,tiss);
}
for(Tissus__c newTissus : trigger.New){
if(mapOfTissus.containsKey(newTissus.Name)){
newTissus.stock_actuel__c = mapOfTissus.get(newTissus.Name).stock_actuel__c ;
}
}
}
