Thanks for the quick reply!
I'm not interested in aliasing the result of the function, but rather
aliasing the function itself. I have a number of expressions that would be
nice to have as "attributes" of a model (for easy test / validation). Is it
possible to bind an expression to a "virtual column" so that
Person.select(:gender_title) and Person.select{gender_title} are equivalent
to the above example of Person.select(Person.gender_title)?
Cheers!
On Thursday, December 4, 2014 1:16:58 PM UTC-8, Jeremy Evans wrote:
>
> On Thursday, December 4, 2014 12:42:39 PM UTC-8, Stefan Novak wrote:
>>
>> Hi!
>>
>> I'm trying to figure out a clean approach for referencing an expression
>> within a Model. For example:
>>
>> class Person < Sequel::Model
>> def self.gender_title
>> Sequel.case({
>> :M => "Men's",
>> :W => "Women's"},
>> "Not Applicable",
>> :gender)
>> end
>> end
>>
>>
>> I can run Person.select(Person.gender_title).sql and it generates the
>> proper SQL. Is there a way to alias this expression to be
>> Person.select(:gender_title)?
>>
>
> If you just want to alias the expression:
>
> Person.select(Person.gender_title.as(:gender_title)).sql
>
> Thanks,
> Jeremy
>
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