tap/app/models/product.rb

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# == Schema Information
#
# Table name: products
#
# id :integer not null, primary key
# name :string(255)
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# price :integer
# created_at :datetime
# updated_at :datetime
# avatar_file_name :string(255)
# avatar_content_type :string(255)
# avatar_file_size :integer
# avatar_updated_at :datetime
# category :integer default(0)
#
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class Product < ActiveRecord::Base
has_many :order_products
has_attached_file :avatar, styles: { medium: "100x100>" }, default_style: :medium
enum category: %w(food beverages other)
validates :name, presence: true
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validates :price, numericality: { only_integer: 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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def price
(read_attribute(:price) || 0) / 100.0
end
def price=(value)
if value.is_a? String then value.sub!(',', '.') end
write_attribute(:price, (value.to_f * 100).to_int)
end
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end