module Conversion
Ruby on Rails 3.1.12
Since v3.0.20Active Model Conversions
Handles default conversions: to_model, to_key and to_param.
Let’s take for example this non persisted object.
class ContactMessage
include ActiveModel::Conversion
# ContactMessage are never persisted in the DB
def persisted?
false
end
end
cm = ContactMessage.new
cm.to_model == self # => true
cm.to_key # => nil
cm.to_param # => nil