AFTER INSERT:
This event runs the block of code after inserting data into the
database. Operations such as creating or updating related records can be
performed under this event.
SYNTAX:
trigger triggerName on objectName (after
insert) {
// Block of code
}
SCENARIO:
We are having the requirement to insert dummy Contact record
as a related object on Account when the Account record is created.
APEX TRIGGER:
trigger AccountMainTrigger on Account (after insert) {// Specifying the event.
createContactClass obj=new
createContactClass(); // Declaring
instance of the class.
if(trigger.isafter &&
trigger.isinsert) // Using
context variables.
{
obj.method1(trigger.new); // Calling apex class method.
}
}
APEX CLASS:
public
class createContactClass {
List<contact> conList=new
List<contact>();
public void method1(List<Account>
accountList){ // Obtaining
the list of Account records from trigger.new.
for(Account obj:accountList){ // Iterating over account list.
contact con=new contact(); // Creating a contact instance.
con.FirstName='Testing contact'; // Creating contact record for each account
con.LastName='Last Name';
con.AccountId=obj.id; // Mapping contact torespective
Account.
conList.add(con); // Adding all contact in List. We
should always perform DML operations on the collection of records to avoid hitting
governor limit.
}
if(conList.size() > 0){ // Checking if the list has
records.
insert conList; // Inserting contact list.This is
how we should perform DML operations on the collection of records.
}
}
}
