veritas1

function add_field(link, association, content) {
  var new_id = new Date().getTime();
  var regexp = new RegExp("new_" + association, "g")
  $(link).parent().before(content.replace(regexp, new_id));
}

function remove_field = (link) {
  $(link).siblings("input[type=hidden]").val(1);
	$(link).closest(".fieldset").hide();
}

veritas1

FactoryGirl.define do
  factory :slideshow_image, class: "Image" do
    association :imageable, :factory => :slideshow
    # other attributes for slideshow model
  end
  
  factory :article_image, class: "Image" do
    association :imageable, :factory => :article
    # other attributes for article model
  end