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sumanthylak how to update the records using trigger.
how to update the records using trigger. i write the trigger for inserted the record into Email__c Field in Student__c custom object. and i need edit the existing record then click on save button . Email__c field is updated . i try for update the record but update is not working. this is code for insert the record into Email__c
Trigger:
trigger suman on Student__c (after insert,after update) {
if(Trigger.isInsert){
for(Student__c stud:Trigger.new){
Student__c st = [Select id,Email__c from Student__c where id=:stud.id];
st.Email__c = 'suman@thylaksoft.com';
update st;
}
}
}
but i need how to write code for update the record. please any one help me.........
u r missing the basic points in the apex developement.. like putting a DML in for loop. and query inside the loop...
u r working on student__c trigger.. and want to updated the same with some values.. hope you are practising apex....
http://www.salesforce.com/us/developer/docs/apexcode/salesforce_apex_language_reference.pdf.. go through this....
It looks like you're attempting the update when the trigger gets executed from record insertion.
If I understand your requirements, I think you'll want to check when Trigger.isUpdate, and perform your update logic in there.
http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_triggers_context_variables.htm
Hope that helps,
-cj