ignore before_update when save

Question

some case I don't want execute before_update. please help me.

case A: in case I want used before_update

obj = Object.find(id)
obj.save

but case B I don't want used before_update

obj = Object.find(id)
obj.save # in case I want used before_update

Answer 1

update_without_callbacks and create_without_callbacks are private methods. These methods will not call any callbacks.

obj = Object.find(id)
obj.send(:update_without_callbacks)

obj = Object.new(:name => 'foo')
obj.send(:create_without_callbacks)

Answer 2

The method #save accepts a Hash of option. To skip validations:

obj.save(:validate => false)

This is the documented way to skip validations using the public API. Don't try to use send to call internal methods or your application might not work in the future.