Skip callbacks in Rails when saving record

This is valid for at least Rails 6. It is also dependent on low-level implementation, but should be rather safe to use.

def without_update_callbacks(record)
    existing_caller = record.method(:_run_update_callbacks)
    record.define_singleton_method(:_run_update_callbacks, ->(&block){ block.call })

    yield
ensure
    record.define_singleton_method(:_run_update_callbacks, existing_caller)
end

Usage

user = User.last

user.name = "Tony"
user.save # runs callbacks

user.name = "Stark"
without_update_callbacks(user) do 
   user.save # does not run callbacks
end

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