class Recipe < ActiveRecord::Base has_many :recipe_ingredients, -> { order :sort_order }, inverse_of: :recipe, dependent: :destroy has_many :recipe_steps, -> { order :sort_order }, inverse_of: :recipe, dependent: :destroy belongs_to :user scope :active, -> { where('deleted <> ? OR deleted IS NULL', true) } accepts_nested_attributes_for :recipe_ingredients, allow_destroy: true accepts_nested_attributes_for :recipe_steps, allow_destroy: true validates :name, presence: true validates :yields, numericality: true, allow_blank: true validates :total_time, numericality: true, allow_blank: true validates :active_time, numericality: true, allow_blank: true def scale(factor) recipe_ingredients.each do |ri| ri.scale(factor) end end end