28 lines
569 B
Ruby
28 lines
569 B
Ruby
# == Schema Information
|
|
#
|
|
# Table name: order_products
|
|
#
|
|
# id :integer not null, primary key
|
|
# order_id :integer
|
|
# product_id :integer
|
|
# count :integer default(1)
|
|
#
|
|
|
|
class OrderProduct < ActiveRecord::Base
|
|
after_create :remove_from_stock
|
|
|
|
belongs_to :order
|
|
belongs_to :product
|
|
|
|
validates :product, presence: true
|
|
validates :count, numericality: { greater_than_or_equal_to: 0 }
|
|
|
|
accepts_nested_attributes_for :product
|
|
|
|
private
|
|
|
|
def remove_from_stock
|
|
product.stock -= self.count
|
|
product.save
|
|
end
|
|
end
|