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class TaxableTaxonomy < ActiveRecord::Base
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belongs_to :taxonomy
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belongs_to :taxable, :polymorphic => true
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validates :taxonomy_id, :uniqueness => {:scope => [:taxable_id, :taxable_type]}
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scope :without, lambda{ |types|
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if types.empty?
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{}
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else
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where(["taxable_taxonomies.taxable_type NOT IN (?)",types])
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end
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}
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end
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