tap/app/models/order.rb

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# == Schema Information
#
# Table name: orders
#
# id :integer not null, primary key
# user_id :integer
# cost :integer
# created_at :datetime not null
# updated_at :datetime not null
#
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class Order < ActiveRecord::Base
include ActionView::Helpers::TextHelper
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after_initialize { self.total_price = 0 }
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after_create { self.user.increment!(:balance_cents, -price) }
before_destroy { self.user.increment!(:balance_cents, price) }
belongs_to :user, counter_cache: true
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has_many :order_items, dependent: :destroy
has_many :products, through: :order_items
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attr_accessor :total_price
validates :user, presence: true
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validates :order_items, presence: true, in_stock: true
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accepts_nested_attributes_for :order_items, reject_if: proc { |oi| oi[:count].to_i <= 0 }
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def price
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self.order_items.map{ |oi| oi.count * oi.product.price_cents }.sum
end
def to_sentence
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self.order_items.map {
|oi| pluralize(oi.count, oi.product.name)
}.to_sentence
end
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def g_order_items(products, params = {})
products.each do |p|
if (oi = self.order_items.select { |t| t.product == p }).size > 0
oi.first.count = [oi.first.product.stock, oi.first.count].min
else
self.order_items.build(product: p)
end
end
end
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end