Rails - Aug 2010 - Form validation and processing w/o model (no Db/ActiveRecord)

All -
Trying not to fight rails on this, basically have a form and all the same as
would be with an ActiveRecord model except that there is no table. I started
out using this article:

http://stackoverflow.com/questions/315850/rails-model-without-database

...which is kind of a hack by inheriting ActiveRecord in to non-AR model but
am running into some problems and just have the feeling that I am fighting
rails and going to spend more time on this than the benefit warrants.

All am looking to do is receive and validate form input, and ideally have
the luxuries like Class.new(params[:object]),
Class.update_attributes(params[:object]), and for the form to do similar
highlighting and error feedback messages as AR.

I found this plug-in: active_form (http://github.com/nesquena/active_form).
Wondering if anyone has used or has better ideas.

David

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Here is what I do:

class Tableless < 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
end

Class Contact < Tableless
  column :address, :string
  column :message, :text

  validates_presence_of :message, :address
end


It works perfectly in Rails 2.3.8, it might break in Rails 3 I haven''t 
tested yet.
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On Mon, Aug 16, 2010 at 1:27 PM, Fernando Perez
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>wrote:
Here is what I do:

class Tableless < 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
> end
>
> Class Contact < Tableless
>  column :address, :string
>  column :message, :text
>
>  validates_presence_of :message, :address
> end
>
>
> It works perfectly in Rails 2.3.8, it might break in Rails 3 I
haven''t
> tested yet.


Thanks Fernando. That is exactly what I was doing (but getting an error) but
your telling me it works perfectly for you made me look further and I found
an error in a field name that I was validating --- so now all works well.
Good to have confirmation that this structure is being used successfully by
others.

David

On Mon, Aug 16, 2010 at 1:27 PM, Fernando Perez
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>wrote:
> Here is what I do:
>
> class Tableless < 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
> end
>
> Class Contact < Tableless
>  column :address, :string
>  column :message, :text
>
>  validates_presence_of :message, :address
> end
>
>
> It works perfectly in Rails 2.3.8, it might break in Rails 3 I
haven''t
> tested yet.
> --
> Posted via http://www.ruby-forum.com/.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Ruby on Rails: Talk" group.
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>
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> .
> For more options, visit this group at
> http://groups.google.com/group/rubyonrails-talk?hl=en.
>
>
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