In Doctrine, the postUpdate event is triggered after the database update operations have been executed and the transaction has been successfully committed. This event allows you to perform actions that should occur once the entity's data has been persisted to the database.
Before saving changes to the database:
This describes the preUpdate event, which occurs before the database update operations are executed. if you didn't change anything in the object, PreUpdate will not run!
Immediately after calling the flush method:
While flush() initiates the process of synchronizing the in-memory state with the database, the postUpdate event is not triggered immediately after calling flush(). It occurs after the database operations are completed and the transaction is committed.
Every time the persist method is called:
The persist method is used to mark an entity for insertion (it tells Doctrine to manage an object). However, the postUpdate event is not triggered by calling persist()