Method: Spree::Adjustment#recalculate

Defined in:
app/models/spree/adjustment.rb

#recalculate ⇒ BigDecimal

Recalculate and persist the amount from this adjustment’s source based on the adjustable (Order, Shipment, or LineItem)

If the adjustment has no source (such as when created manually from the admin) or is closed, this is a noop.

Returns:

  • (BigDecimal) —

    New amount of this adjustment



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# File 'app/models/spree/adjustment.rb', line 101

def recalculate
  if finalized? && !tax?
    return amount
  end

  # If the adjustment has no source, do not attempt to re-calculate the
  # amount.
  # Some scenarios where this happens:
  #   - Adjustments that are manually created via the admin backend
  #   - PromotionAction adjustments where the PromotionAction was deleted
  #     after the order was completed.
  if source.present?
    self.amount = source.compute_amount(adjustable)

    if promotion?
      self.eligible = calculate_eligibility
    end

    # Persist only if changed
    # This is only not a save! to avoid the extra queries to load the order
    # (for validations) and to touch the adjustment.
    update_columns(eligible: eligible, amount: amount, updated_at: Time.current) if changed?
  end
  amount
end