14 lines
558 B
Ruby
14 lines
558 B
Ruby
class Nutrient < QuantityValue
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# Need to specify polymorphic association so :registry_type gets written (see
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# QuantityValue for explanation why it's needed)
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belongs_to :food, inverse_of: :nutrients, polymorphic: true, required: true,
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foreign_key: 'registry_id', foreign_type: 'registry_type'
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# Uniqueness NOT validated here, see Value for explanation
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#validates :quantity, uniqueness: {scope: :food_id}
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validates :value, numericality: {greater_than_or_equal_to: 0.0}
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alias_attribute :amount, :value
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delegate :ref_amount, to: :food
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end
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