':select' is perfect:

users = User.find(:all, :select = 'email')

I overlooked it in RoR api.
Thank you !

Alessandro

Frederick Cheung wrote:
> On Apr 7, 10:54�am, Ale Ds <[email protected]> wrote:
>> Hi,
>>
>> if I do:
>> user = User.find :all
>> render :xml => user.to_xml
>>
>> I obviously get the user records whith ALL the columns (name, surname,
>> tel, email, ...)
>>
> 
> depending on what you're doing, either use the :select option on the
> call to find or the :only/:except options on to_xml may be what you
> want.
> 
> Fred

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