Rails - Oct 2005 - accessing instance variable from validation helper.

Hi,

I have a simple address form. All I want to do is to check the  
existence of State field if one of the addresses is set to US. I  
tried this but didn''t work


validates_each    :billing_address_state, :shipment_address_state do  
| model,attr, value |
     if :billing_address_country != "US" and value == ""
      model.errors.add(attr,"cannot be left empty")  
if :billing_address_country
end


My question is, how can I access instance variables within a  
validation helper block for validations based on the value of another  
attribute?

Thanks  in advance

Hi !

2005/10/12, Oyku Gencay <oyku@gencay.net>:
> validates_each    :billing_address_state, :shipment_address_state do
> | model,attr, value |
>      if :billing_address_country != "US" and value ==
""
>       model.errors.add(attr,"cannot be left empty")
> if :billing_address_country
> end
>
>
> My question is, how can I access instance variables within a
> validation helper block for validations based on the value of another
> attribute?
model.another_attribute ?

You have access to the full model, it's the first parameter in the block :)

Bye !
François

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Silly me :)

The code sample mislead me. I thought that the model was the class  
not the instance, which the other way around does not even make sense.

Thanks a lot.
Oyku

On 13.Eki.2005, at 08:40, Francois Beausoleil wrote:
> Hi !
>
> 2005/10/12, Oyku Gencay
<oyku-EH/T/IZ+b7usTnJN9+BGXg@public.gmane.org>:
>
>> validates_each    :billing_address_state, :shipment_address_state do
>> | model,attr, value |
>>      if :billing_address_country != "US" and value ==
""
>>       model.errors.add(attr,"cannot be left empty")
>> if :billing_address_country
>> end
>>
>>
>> My question is, how can I access instance variables within a
>> validation helper block for validations based on the value of another
>> attribute?
>>
>
> model.another_attribute ?
>
> You have access to the full model, it''s the first parameter in the
> block :)
>
> Bye !
> François
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>