58 lines
1.5 KiB
Ruby
58 lines
1.5 KiB
Ruby
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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ransack_alias :quantity_available, :quantity # in-line with {StockArticleSerializer}
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def self.ransackable_attributes(auth_object = nil)
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super(auth_object) - %w(supplier_id) + %w(quantity)
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end
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def self.ransackable_associations(auth_object = nil)
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super(auth_object) - %w(supplier)
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end
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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: %w[open finished received] }).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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