Saves the model.
If the model is new a record gets created in the database, otherwise the existing record gets updated.
There’s a series of callbacks associated with save!. If any of the before_* callbacks return false the action is cancelled and save! raises ActiveRecord::RecordNotSaved. See <a href="/rails/ActiveRecord/Callbacks">ActiveRecord::Callbacks</a> for further details.
# File activerecord/lib/active_record/base.rb, line 2391 def save! create_or_update || raise(RecordNotSaved) end