_lid.html.erb

<%= image_tag "options/#{lid.display_data}", alt: lid.name, title: lid.name, class: 'lid option', option_id: lid.id %>

_option.html.erb

<div class="option_wrapper">
  <div class="option_header">SELECT <%= option.name %>: <span class="option_text"><%= option.option_values[0].name %></span></div>
	<div class="options"><input type="hidden" name="options[<%= option_counter %>]" class="option_value" value="<%= option.option_values[0].id %>">
		<%= render partial: option.option_type.template, collection: option.option_values %>
	</div>
</div>

product.rb

class Product < ActiveRecord::Base
  attr_accessible :description, :name, :price, :brand_id, :product_type_id

  belongs_to :brand
  belongs_to :product_type
  has_many :category_products, dependent: :destroy
  has_many :categories, through: :category_products
  has_many :reviews
  has_many :line_items
  has_many :product_images
  has_many :product_option_values
  has_many :option_values, through: :product_option_values, order: "option_values.order_num"
  has_many :options, through: :option_values, order: "options.order_num", uniq: true
  has_one :product_image, conditions: {default_image: 1}

  before_destroy :ensure_not_referenced_by_any_line_item

  validates :name, uniqueness: true, presence: true
  validates :price, presence: true, numericality: true, format: { with: /^\d{1,4}(\.\d{0,2})?$/ }
  validates :brand_id, presence: true
  validates :product_type_id, presence: true

  def ensure_not_referenced_by_any_line_item
    if line_items.count.zero?
      return true
    else
      errors.add(:base, 'Line Items Exist')
      return false
    end
  end

  def product_options_by_id(id)
    option_values.includes(option: :option_type).where("option_types.id = ?", id)
  end

  def product_colors
      self.product_options_by_id(1)
  end

  def rating
    rating = reviews.average(:rating).to_f.round
  end

end