Possible bug on find method with :select attribute and aggregate functions...

Hi to everyboy.. I need your help in order to know if I get wrong..

I have this migration file:

class CreateSpecifications < ActiveRecord::Migration
  def self.up
    create_table :specifications do |t|
      t.string :tolerancia
      t.integer :umbral

      t.timestamps
    end
  end

  def self.down
    drop_table :specifications
  end
end

I put some data by mean of script/console
Specification.create(:umbral => 33, :tolerancia => 'alta')
Specification.create(:umbral => 23, :tolerancia => 'alta')
Specification.create(:umbral => 12, :tolerancia => 'baja')
Specification.create(:umbral => 33, :tolerancia => 'baja')

Then when I run the following statement
Specification.find(:all, :select => 'tolerancia, sum(umbral) as
total', :group => 'tolerancia')

I get the following:
[#<Specification tolerancia: "alta">, #<Specification tolerancia:
"baja">]

Where is my total field??? How could I get it???

Besides, whit the following statement:

Specification.find(:first, :select => 'now() as ahora')

=> #<Specification >

Where is my field 'ahora'?

Thanks in advanced by your help...

Hi to everyboy.. I need your help in order to know if I get wrong..

I have this migration file:

class CreateSpecifications < ActiveRecord::Migration
def self.up
   create_table :specifications do |t|
     t.string :tolerancia
     t.integer :umbral

     t.timestamps
   end
end

def self.down
   drop_table :specifications
end
end

I put some data by mean of script/console
Specification.create(:umbral => 33, :tolerancia => 'alta')
Specification.create(:umbral => 23, :tolerancia => 'alta')
Specification.create(:umbral => 12, :tolerancia => 'baja')
Specification.create(:umbral => 33, :tolerancia => 'baja')

Then when I run the following statement
Specification.find(:all, :select => 'tolerancia, sum(umbral) as
total', :group => 'tolerancia')

I get the following:
[#<Specification tolerancia: "alta">, #<Specification tolerancia:
"baja">]

Where is my total field??? How could I get it???

The default display for activerecord objects only shows attributes
corresponding to columns on the table. It's there - just not
displayed. Call the total method to read it ( although in this case
i'd just use the sum method instead of find)

Fred

Besides, whit the following statement:

Specification.find(:first, :select => 'now() as ahora')

=> #<Specification >

Where is my field 'ahora'?

Same as above

Yes!! You are right!! Thanks a lot!!