POS-Server/app/models/transfer.rb

class Transfer < ActiveRecord::Base
	audited

	belongs_to :origin, class_name: 'Pointsale'
	belongs_to :destiny, class_name: 'Pointsale'
	belongs_to :user, class_name: 'User'
	belongs_to :received_by, class_name: 'User'

  has_many :transfer_details
	has_many :products, through: :transfer_details
	has_many :inventories_moves

	enum status: [:cancelled, :pending, :received]

	accepts_nested_attributes_for :transfer_details

	validates_associated :transfer_details
	validates :origin_id, presence: { message: "Debe indicar origen del traspaso." }, on: [:create, :update]
	validates :destiny_id, presence: { message: "Debe indicar destino del traspaso." }, on: [:create, :update]
	validates :received_by_id, presence: { message: "Debe indicar quien recibió el traspaso." }, on: [:update]
	validate :require_products, on: :create

	scope :activos, -> { where(status: 1) }

	private
	def require_products
		errors.add(:base, "Debe seleccionar al menos un producto") if transfer_details.size == 0
	end
end