Rails - Feb 2012 - rails validation presence of all attributes in a group or none

I am trying to validate the presence of banking data of a customer
(  bank name, bank address, bank branch, ...)

If one of these fields is not blank then all other fields should be
filled...
Is there a smart way to validate it .. i.e  validate presence of a
group of attributes ...

thanks fyfb

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On 16 February 2012 14:46, Erwin
<yves_dufour-ee4meeAH724@public.gmane.org> wrote:
> I am trying to validate the presence of banking data of a customer
> (  bank name, bank address, bank branch, ...)
>
> If one of these fields is not blank then all other fields should be
> filled...
> Is there a smart way to validate it .. i.e  validate presence of a
> group of attributes ...
# in your model
validate :all_or_none_address_fields

def child_and_team_code_exists
  address_fields = [address1, address2, address3, town, county,
postcode] # these are all the attributes of the model you want all or
none of
   errors.add_to_base("All of the address fields need a value if any
of them are entered") if
   address_fields.any? && !address_fields.all?
end

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