[Radiant] Extending Models in Extensions

[Ryan Heneise]

I think I just solved my own problem.

Evidently it is easy to open up and extend the Page model

I put:

>    class Page < ActiveRecord::Base
>      has_many :comments
>    end
>
> in ../extensions/comments/app/models/page.rb

and then

   require File.dirname(__FILE__) + '/app/models/page'

in the extension definition.


On Mar 28, 2007, at 9:51 AM, Ryan Heneise wrote:

> Hi Folks... Longtime Radiant user, just getting started with Mental
> Extensions.
>
> I am creating an extension for posting and managing Comments. I've
> created the Comment model, my controllers, and views in the new
> Extension, but I'm having trouble extending Radiant's built-in Page
> model to include the proper has_many association.
>
> In a nutshell: I want to include a has_many association in the Page
> model.
>
> It seems like I should be able to just open the Page class and
> include my association like this:
>
>    class Page < ActiveRecord::Base
>      has_many :comments
>    end
>
> in ../extensions/comments/app/models/page.rb
>
> This doesn't work, of course. It doesn't return an error - as far as
> I can tell it just doesn't do anything. Referencing @page.comments in
> my views throws an error: "undefined method `comments'". I presume
> it's because it is ignoring this class.
>
> I've also tried several module mix-ins that haven't worked (i.e.
> packaging a PageExtender module and then including it in Page). For
> example:
>
>    module PageExtender
>      def self.included(base)
>        base.extend(ClassMethods)
>      end
>      module ClassMethods
>        has_many :comments
>      end
>    end
>
> in ../extensions/comments/lib/page_extender.rb
>
> And then
>
>    def activate
>      ...
>      Page.send :include, PageExtender
>    end
>
> in ../extensions/comments/comments_extension.rb
>
> But this terminates with
> ~/Sites/radiant.mental/vendor/extensions/comments/lib/
> page_extender.rb:8: undefined method `has_many' for
> PageExtender::ClassMethods:Module (NoMethodError)
>
> Any ideas?
>
> Thanks,
> Ryan Heneise
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------------------------------------------------
Ryan Heneise
Art of Mission, Inc.
3720 Gattis School Rd #800 PMB 245
Round Rock, TX 78664

800-722-1492 (phone)

www.artofmission.com
ryan at artofmission.com