Time-stamped Column
Records modified time for individual columns.
Usage (in a model)
timestamped_column :email_address
Records the most recent modification time of :email_address
to :email_address_updated_at
(defaults to name_updated_at
)
timestamped_column :email_address, :column => :email_address_changed_at
Records the most recent modification time of :email_address
to :email_address_changed_at