From: Eduardo Blumenfeld <eblumenfeld@...>
Date: 2010-06-21T13:59:38+09:00
Subject: Update FK_ID at validation/save time in activerecor

I have:

------------------------
class Customer < ActiveRecord::Base
   belongs_to :Customer_Type
end

class Customer_Type < ActiveRecord::Base
   has_many :Customers
end

------------------------

Is there a built-in way to auto populate customer_type_id
based on the "Human name" of the Customer_Type_ID?

------------------------
c = Customer.new( :name => "John Doe", :customer_type_name =>
"Wholesale" )
------------------------
# c[:Customer_Type_ID] == 10  (if 10 is the id for the "Wholesale"
customer type)
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