Cfrgtkky

I was wondering if I could update a record (entire row) given a replacement activerecord object.

Something like

Car.find_by(number: 1) = replacement_information_for_car_1

where replacement_information_for_car_1 is a Car activerecord object that I would like to use to replace the old record currently on the table.

You could do something like:

attributes = replacement_information_for_car_1.attributes

attributes.delete('id') # and anything else you don't want/can't be copied

Car.find_by(number: 1).update(attributes)

Not the cutest thing in the world, but it should do the trick.

The thing about ActiveRecord objects is that they have a unique identifier that you don't want to override. You'll have to assign the attributes without the id, that is most likely to be nil in your example.

Car.find_by(number: 1).update(replacement_information_for_car_1.attributes.except(:id))

That's a long line that can be refactored to something like

new_attributes = replacement_information_for_car_1.attributes.except(:id)

Car.find_by(number: 1).update(new_attributes)