I have this situation where in an after_update, I would like to know
the previous value of the record instead of simply being notified the
record has been updated.
For example let’s say I had a table called ‘foo’ which had a field
‘new_flag’. I want to know when the ‘new_flag’ field changes from 0 –
1 in an after_update so I can do some business logic in the
after_update. My problem is in the after_update I don’t know how to
detect if that particular field got updated.
Is there some api call I can use to access the old object?