```ruby
Order.class_eval do
  token_resource

  # Associates the specified user with the order and destroys any previous association with guest user if
  # necessary.
  def associate_user!(user)
    self.user = user
    self.email = user.email
    # disable validations since this can cause issues when associating an incomplete address during the address step
    save(:validate => false)
  end
end
```

Fix Order reference in OrderDecorator
user
```ruby
Spree::Order.class_eval do
  token_resource

  # Associates the specified user with the order and destroys any previous association with guest user if
  # necessary.
  def associate_user!(user)
    self.user = user
    self.email = user.email
    # disable validations since this can cause issues when associating an incomplete address during the address step
    save(:validate => false)
  end
end
```
assistant