CODEWITHSUNDEEP
ruby-on-railsruby
Gandalf StormCrow
Gandalf StormCrow

Reputation: 26192

Copy/Clone objects from database

I have relations as follows :

Customer has many Orders
Order has many Parts

What I'm trying to do is to assign orders/parts to another customer, but I want to keep the original customer/orders/parts relation. So I tried this (assuming customer is a Customer instance)

another_customer_id = 22
customer.orders.each do |order|
  ord = order.dup
  ord.customer_id = another_customer_id
  ord.save!
  order.parts.each do |part|
    prt = part.dup
    prt.order_id = ord.id
    prt.save!
  end
end

So I'm assuming once I do customer_two.orders I will get everything as in first customer, but strangely I don't. It seems the first customer has double the orders/parts.

How can I do this in a better way?

update

When I use .dup method the original customers orders are doubled in the database. When I use .clone instead of .dup nothing happens, another customer still doesn't have orders from original customer

Upvotes: 0

Views: 107

Answers (1)

Alfred Fazio
Alfred Fazio

Reputation: 956

The code you have here looks reasonable to me if you are using Rails >= 3.1. Before Rails 3.1 you need to use clone instead of dup. However, here is another method that you can try:

another_customer_id = 22
customer.orders.each do |order|
  ord = Order.create(order.attributes.merge(:customer_id => another_customer_id))
  order.parts.each do |part|
    Part.create(part.attributes.merge(:order_id => ord.id))
  end
end

Upvotes: 2

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