50 lines
1.2 KiB
Ruby
50 lines
1.2 KiB
Ruby
# encoding: utf-8
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class StockArticle < Article
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has_many :stock_changes
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scope :available, -> { undeleted.where('quantity > 0') }
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validates :quantity, presence: true, numericality: {greater_than_or_equal_to: 0}
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before_destroy :check_quantity
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# Update the quantity of items in stock
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def update_quantity!
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update_attribute :quantity, stock_changes.collect(&:quantity).sum
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end
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# Check for unclosed orders and substract its ordered quantity
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def quantity_available
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quantity - quantity_ordered
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end
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def quantity_ordered
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OrderArticle.where(article_id: id).
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joins(:order).where(orders: {state: ['open', 'finished']}).sum(:units_to_order)
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end
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def quantity_history
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stock_changes.reorder('stock_changes.created_at ASC').map{|s| s.quantity}.cumulative_sum
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end
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def self.stock_value
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available.collect { |a| a.quantity * a.gross_price }.sum
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end
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def mark_as_deleted
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check_quantity
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super
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end
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protected
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def check_quantity
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raise I18n.t('stockit.check.not_empty', :name => name) unless quantity == 0
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end
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# Overwrite Price history of Article. For StockArticles isn't it necessary.
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def update_price_history
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true
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end
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end
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