8a74e7d77f
Annotate: Better look in schema.rb, this reference should be always up to date. Hirb: To reactivate hirb, look in railscasts: http://railscasts.com/episodes/48-console-tricks-revised
43 lines
1.1 KiB
Ruby
43 lines
1.1 KiB
Ruby
# encoding: utf-8
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class StockArticle < Article
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acts_as_paranoid
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has_many :stock_changes
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scope :available, :conditions => "quantity > 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(exclude_order = nil)
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available = quantity
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for order in Order.stockit.all(:conditions => "state = 'open' OR state = 'finished'")
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unless order == exclude_order
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order_article = order.order_articles.first(:conditions => {:article_id => id})
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available -= order_article.units_to_order if order_article
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end
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end
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available
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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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protected
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def check_quantity
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raise "#{name} kann nicht gelöscht werden. Der Lagerbestand ist nicht null." 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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