tap/app/models/product.rb

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# == Schema Information
#
# Table name: products
#
# id :integer not null, primary key
# name :string not null
# price_cents :integer default("0"), not null
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# created_at :datetime
# updated_at :datetime
# avatar_file_name :string
# avatar_content_type :string
# avatar_file_size :integer
# avatar_updated_at :datetime
# category :integer default("0")
# stock :integer default("0"), not null
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# calories :integer default("0") // expressed in kcal
#
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class Product < ActiveRecord::Base
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has_many :order_items
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has_attached_file :avatar, styles: { dagschotel: "80x80>", medium: "100x100>", small: "40x40>" }, default_style: :medium
enum category: %w(food beverages other)
validates :name, presence: true
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validates :price_cents, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
validates :stock, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
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validates :calories, numericality: { only_integer: true, allow_nil: true, greater_than_or_equal_to: 0 }
validates_attachment :avatar,
presence: true,
content_type: { content_type: ["image/jpeg", "image/gif", "image/png"] }
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scope :for_sale, -> { where deleted: false }
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def price
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self.price_cents / 100.0
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end
def price=(value)
if value.is_a? String then value.sub!(',', '.') end
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self.price_cents = (value.to_f * 100).to_int
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end
def out_of_sale
update_attribute :deleted, true
end
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end