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23 lines
639 B
Ruby
23 lines
639 B
Ruby
# frozen_string_literal: true
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# Provides methods for update quantity of order item
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class Cart::SetQuantityService
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def call(order, orderable, quantity = nil)
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return order if quantity.to_i.zero?
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raise Cart::OutStockError if quantity.to_i > orderable.stock['external']
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item = order.order_items.find_by(orderable: orderable)
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raise ActiveRecord::RecordNotFound if item.nil?
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different_quantity = quantity.to_i - item.quantity
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order.total += (orderable.amount * different_quantity)
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ActiveRecord::Base.transaction do
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item.update(quantity: quantity.to_i)
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order.save
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end
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order.reload
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end
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end
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