23 lines
822 B
Ruby
23 lines
822 B
Ruby
class ItemInCart < ActiveRecord::Base
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belongs_to :cart
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belongs_to :item
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validates_uniqueness_of :item_id, scope: :cart_id
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validates :item_id, presence: true
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validates :cart_id, presence: true
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def self.update_state(cart_id, item_id, count)
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item_in_cart = nil
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ItemInCart.transaction do
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item_in_cart = ItemInCart.where(cart_id: cart_id, item_id: item_id).first
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item_in_cart ||= ItemInCart.new(cart_id: cart_id, item_id: item_id)
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item_in_cart.count = count
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item_in_cart.price = item_in_cart.item.list_price
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item_in_cart.commission = (((item_in_cart.item.list_price - item_in_cart.item.current_input_price) / (item_in_cart.item.current_input_price)) * 100).round(2)
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item_in_cart.save!
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item_in_cart.destroy! if count <= 0
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end
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return item_in_cart
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end
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end
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