Rails - Jun 2007 - how to make "virtual ActiveRecord" be short?

use ActiveRecord::ConnectionAdapters::Column can make a "virtual
ActiveRecord",but how to make it short or have it other method?

class EmailForm < ActiveRecord::Base
  def self.columns() @columns ||= []; end
  def self.column(name, sql_type = nil, default = nil, null = true)
    columns << ActiveRecord::ConnectionAdapters::Column.new(name.to_s,
default, sql_type.to_s, null)
  end

  column :title, :string
  column :body, :string

  validates_presence_of :title
  validates_presence_of :body

end

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I''ve got a mixin that approaches this from the other angle:

http://djur.desperance.net/ruby/fake_active_record.rb

It implements enough of the AR interface to make most validations
work; human_attribute_name is implemented so error_messages_for works.
All you have to do is ''include FakeActiveRecord'' and define
the
attributes with attr_accessor.

On Jun 18, 1:08 am, gz zz
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> use ActiveRecord::ConnectionAdapters::Column can make a "virtual
> ActiveRecord",but how to make it short or have it other method?
>
> class EmailForm < ActiveRecord::Base
>   def self.columns() @columns ||= []; end
>   def self.column(name, sql_type = nil, default = nil, null = true)
>     columns <<
ActiveRecord::ConnectionAdapters::Column.new(name.to_s,
> default, sql_type.to_s, null)
>   end
>
>   column :title, :string
>   column :body, :string
>
>   validates_presence_of :title
>   validates_presence_of :body
>
> end
>
> --
> Posted viahttp://www.ruby-forum.com/.

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mboeh-UtljGsy+VVc0aPf6s/0I7w@public.gmane.org wrote:
> I''ve got a mixin that approaches this from the other angle:
> 
> http://djur.desperance.net/ruby/fake_active_record.rb
> 
> It implements enough of the AR interface to make most validations
> work; human_attribute_name is implemented so error_messages_for works.
> All you have to do is ''include FakeActiveRecord'' and
define the
> attributes with attr_accessor.
thank you.the error_message does not show:("can not be blank")

model:
require "fake_active_record"
class Fake  < ActiveRecord::Base
  include FakeActiveRecord
  attr_accessor :title
  validates_presence_of :title,:message=>"can not be blank"
end


view:
<%=error_messages_for :fake%>
<%form_tag  :action=>"fake" do %>
<%fields_for :fake do |f|%>
<%=f.text_field :title%><%=error_message_on(:fake,:title)%>
<%end%>
<%=submit_tag%>
<%end%>


controller:

def fake
   #if Fake.new(params[:fake])
   #else
   render :action=>"fake_new"
   #end
  end

  def fake_new
   @fake = Fake.new
  end


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