How to clone a model's attributes easily?
- by Zabba
I have these models:
class Address < ActiveRecord::Base
belongs_to :event
attr_accessible :street, :city
validates :street, :city, :presence => true
end
class Event < ActiveRecord::Base
has_one :address
accepts_nested_attributes_for :address
end
If I do the below assignment in the Events create action and save the event I get an error:
#Use the current user's address for the event
@event.address_attributes = current_user.address.attributes
#Error occurs at the above mentioned line
ActiveRecord::RecordNotFound (Couldn't find Address with ID=1 for Event with ID=)
I think what's happening is that all the address's attributes (including the primary key)
is getting assigned in the @event.address_attributes = line.
But all I really want is the "real data" (street, city), not the primary keys or created_at etc to get copied over.
I suppose I could write a small method to do this sort of selective copy but
I can't help but feel there must be some built-in method for this?
What's the best/right way to do this?
