accepts_nested_attributes_for with find_or_create?

by

When you define a hook for autosave associations, the normal code path is skipped and your method is called instead. Thus, you can do this:

class Post < ActiveRecord::Base
  belongs_to :author, :autosave => true
  accepts_nested_attributes_for :author

  # If you need to validate the associated record, you can add a method like this:
  #     validate_associated_record_for_author
  def autosave_associated_records_for_author
    # Find or create the author by name
    if new_author = Author.find_by_name(author.name)
      self.author = new_author
    else
      self.author.save!
    end
  end
end

This code is untested, but it should be pretty much what you need.

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