Rails ActiveRecord - eager loading (sort of) when using 'build' from has_many

Question

I have a situation where children are built but not saved, and are then being used in the view with references to the parent. This leads to extensive use of rails record caching. I'd like to have the parent 'eager loaded' with the unsaved children records.

class Parent < ActiveRecord::Base
  has_many :children
  def make_children
    loop..
      children_array << children.build(...)
    end
  end
end

Then in the view (note that 'child' isn't saved to DB):

children_array.each do |child|
  # What's the best way to optimise this so it doesn't
  # keep selecting parent albeit from the cache?
  child.parent 
end

Answer 1

I'm not sure I understand the problem. The query cache is your friend...! You're calls to .parent aren't hitting the database.

If you can include more information as to what you're trying to do it might be easier to help with the problem.