35 lines
735 B
Ruby
35 lines
735 B
Ruby
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# == Schema Information
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# Schema version: 20090115232435
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#
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# Table name: stock_changes
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#
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# id :integer(4) not null, primary key
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# delivery_id :integer(4)
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# order_id :integer(4)
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# article_id :integer(4)
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# quantity :decimal(6, 2) default(0.0)
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# created_at :datetime
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#
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class StockChange < ActiveRecord::Base
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belongs_to :delivery
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belongs_to :order
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belongs_to :article
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validates_presence_of :article_id, :quantity
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validates_numericality_of :quantity
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after_save :update_article_quantity
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after_destroy :remove_added_quantity
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protected
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def update_article_quantity
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article.update_quantity(quantity)
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end
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def remove_added_quantity
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article.update_quantity(quantity * -1)
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end
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end
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