module ActiveRecord::AttributeMethods::Dirty

attribute_in_database("name").
saved. It can be invoked as +name_in_database+ instead of
original value of an attribute prior to any changes about to be
This method is useful in validations and before callbacks, to see the

saved.
in-memory value that will be persisted the next time the record is
Returns the value of an attribute in the database, as opposed to the

def attribute_in_database(attr_name)
  mutations_from_database.original_value(attr_name.to_s)
end