74 lines
1.6 KiB
Ruby
74 lines
1.6 KiB
Ruby
class Ingredient < ActiveRecord::Base
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include TokenizedLike
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belongs_to :user
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validates :name, presence: true
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validates :density, density: true, allow_blank: true
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scope :has_density, -> { where.not(density: nil) }
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def self.search(query)
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tokens = query.to_s.split(' ')
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if tokens.empty?
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Ingredient.none
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else
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Ingredient.matches_tokens(:name, tokens)
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end
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end
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def ndbn=(value)
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@usda_food = nil
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super
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end
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def usda_food
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if self.ndbn.present?
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@usda_food ||= UsdaFood.find_by_ndbn(self.ndbn)
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else
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nil
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end
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end
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def usda_food_name
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if usda_food
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usda_food.long_description
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end
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end
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def set_usda_food(food)
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return unless food
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self.ndbn = food.ndbn
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self.water = food.water
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self.protein = food.protein
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self.lipids = food.lipid
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self.carbohydrates = food.carbohydrates
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self.ash = food.ash
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self.kcal = food.kcal
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self.fiber = food.fiber
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self.sugar = food.sugar
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self.density = calculate_density(food.gram_weight_1, food.gram_weight_desc_1) || calculate_density(food.gram_weight_2, food.gram_weight_desc_2)
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end
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def calculate_density(grams, description)
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return nil if grams.blank? || description.blank?
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begin
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value_unit = UnitConversion.parse(description)
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if value_unit.volume?
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density_value = grams.to_d / value_unit.raw_value
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density_units = "g/#{value_unit.unit.unit}"
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density = UnitConversion.parse(density_value, density_units)
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return density.convert('oz/cup').to_s
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else
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return nil
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end
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rescue UnitConversion::UnparseableUnitError
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return nil
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end
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end
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end
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