Re: RoR vs PHP

Article View: pl.comp.lang.ruby

Article #828

#828

From: Maciej Piechotka
Date: Wed, 02 Jan 2008 08:33

45 lines
2784 bytes

On Wed, 02 Jan 2008 03:53:39 +0000, Jaroslaw Zabiello wrote:

> On Tue, 01 Jan 2008 23:14:53 -0000, Jaroslaw Zabiello <abuse@tpnet.pl>
> wrote:
> 
>> class Child1 < Sequel::Model(:childs1)
>>    set_schema do
>>      primary_key :parent_id
>>      varchar :pole1
>>    end
>>    class << self
>>      def next_id
>>        self.select(:max[:parent_id].as(:last_id)).first.last_id.to_i +
>>        1
>>      end
>>    end
>>    before_save do
>>      unless Parent.filter(:id => Child1.next_id).first
>>        raise 'Parent cannot assign more childs1 objects'
>>      end
>>    end
>> end
> 
> To samo, ale krócej:
> 
> class Child1 < Sequel::Model(:childs1)
>    set_schema do
>      primary_key :parent_id
>      varchar :pole1
>    end
>    before_save do
>      unless Parent[Child1.max(:parent_id).to_i + 1]
>        raise 'Parent cannot assign more childs1 objects'
>      end
>    end
> end

Ale Child1 nie jest pochodną klasy Parent. W ruby oczywiście nie stanowi 
to dużego problemu, ale w pewnych przypadkach może. 

Pozdrawiam
-- 
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Path: mbox-mo1.pugleaf.net!news-archive.icm.edu.pl!news.gazeta.pl!newsfeed.pionier.net.pl!news.internetia.pl!nnrpd.internetia.pl
From: Maciej Piechotka <uzytkownik2@gmail.com>
Newsgroups: pl.comp.lang.ruby
Subject: Re: RoR vs PHP
Date: Wed, 2 Jan 2008 09:33:31 +0100
Organization: Netia S.A.
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