app/models/spree/zone_decorator.rb
def zip_code_ids
    if kind == 'zip_code'
      members.collect(&:zoneable_id)
    else
      []
    end
  end
# Check for whether an address.zipcode is available
Check for whether an address.zipcode is available
Check for whether an address . zipcode is available
def zip_code_ids
    if kind == 'zip_code'
      members.collect(&:zoneable_id)
    else
      []
    end
  end
def zip_code_ids if kind == 'zip_code' members . collect ( & :zoneable_id ) else [ ] end end
Check for whether an address.zipcode is available
Check for whether an address . zipcode is available