Re: losowy wybór obiektów

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Article #424

#424

From: Bragi Ragnarson
Date: Fri, 09 Feb 2007 09:32

18 lines
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On Jan 25, 1:01 pm, "punkracy" <punkr...@gmail.com> wrote:
> Mam model Section, w którym trzymam informacje o działach (np.
> Historia, Matematyka, Biologia). Mam też model Question dla pytań
> odpowiednich dla kategorii.

class Section
  has_many :questions do
    def random(size=4)
      find(:all, :limit => size, :order => 'RANDOM()')
    end
  end
end

@questions = Section.find(:first).questions.random # => Zwraca 4
losowe elementy

Pozdrawiam,
Łukasz

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From: "Bragi Ragnarson" <bragi.ragnarson@gmail.com>
Newsgroups: pl.comp.lang.ruby
Subject: Re: losowy wybór obiektów
Date: 9 Feb 2007 01:32:08 -0800
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