38 lines
1.5 KiB
Ruby
38 lines
1.5 KiB
Ruby
class Target < ActiveRecord::Base
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belongs_to :goal, inverse_of: :targets, required: true
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belongs_to :quantity, inverse_of: :targets, required: true
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belongs_to :item, polymorphic: true, inverse_of: :targets
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has_many :thresholds, -> { joins(:quantity).order(:lft) },
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as: :registry, inverse_of: :target, dependent: :destroy, validate: true
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validates :thresholds, presence: true
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accepts_nested_attributes_for :thresholds, allow_destroy: true,
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reject_if: proc { |attrs| attrs['quantity_id'].blank? && attrs['value'].blank? }
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validate do
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quantities = thresholds.map(&:quantity)
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ancestors = quantities.max_by(:lft).self_and_ancestors
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errors.add(:thresholds, :count_mismatch) unless quantities.length == ancestors.length
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errors.add(:thresholds, :quantity_mismatch) unless quantities == ancestors
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end
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validates :scope, inclusion: {in: [:ingredient, :meal, :day], if: -> { quantity.diet? }}
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validates :effective_from, presence: {if: :is_binding?}, absence: {unless: :is_binding?}
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after_initialize do
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if new_record?
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# Target should be only instantiated through Goal, so :is_binding? will be available
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self.effective_from ||= Date.current if is_binding?
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end
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end
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delegate :is_binding?, to: :goal
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# NOTE: remove if not used in controller
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def arity
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thresholds.size
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end
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def to_s
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thresholds.last.quantity.description %
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thresholds.map { |t| [t.quantity.name, "#{t.value} [#{t.unit.shortname}]"] }.to_h
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end
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end
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