How to save a model without running callbacks in Rails

Question

I need to calculate values when saving a model in Rails. So I call calculate_averages as a callback for a Survey class:

before_save         


        

Answer 1

I believe what you are asking for can be achieved with ActiveSupport::Callbacks. Have a look at set_callback and skip_callback.

In order to "force callbacks to get called even if you made no changes to the record", you need to register the callback to some event e.g. save, validate etc..

set_callback :save, :before, :my_before_save_callback

To skip the before_save callback, you would do:

Survey.skip_callback(:save, :before, :calculate_average). 

Please reference the linked ActiveSupport::Callbacks on other supported options such as conditions and blocks to set_callback and skip_callback.