def apply_to_donation(donation)
    if active?
      amount_to_apply = donation.project_amount
      donation.grant_amount ||= 0
      if remaining_amount >= amount_to_apply
        # Case: There is enough remaining to match the gift
        donation.grant_amount += amount_to_apply
        self.remaining_amount  -= amount_to_apply
      else
        # Case: There is NOT enough remaining to match the gift
        donation.grant_amount += amount_remaining
        self.remaining_amount  -= amount_remaining
      end
      donation.grants.push(self)
      donation.save!
      self.save!
    end
  end