# Trouble with inheritance in ArchivePage **URL:** \ **Category:** Radiant CMS\ **Created:** [August 28, 2007, 7:38am UTC](https://www.ruby-forum.com/t/trouble-with-inheritance-in-archivepage/113156 "2007-08-28T07:38:05Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Sylvestre\_MergulhSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f17d59/32.png) [@Sylvestre\_MergulhSS](https://www.ruby-forum.com/u/Sylvestre_MergulhSS)\ **Post date:** [August 28, 2007, 7:38am UTC](https://www.ruby-forum.com/t/trouble-with-inheritance-in-archivepage/113156/1 "2007-08-28T07:38:05Z")
I’m developing an extension with radiant 0.6.2 as a gem. In the extension I generated a page thats inherits from ArchivePage, like this: class CategoryPage \< ArchivePage end And put it in activate like this: def activate CategoryPage end Now when I try to load radiant (admin or not), I’ve got in the terminal of webrick: /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*/ luke@darkstar:~/devel/covisa$ script/server =\> Booting WEBrick… =\> Rails application started on [http://0.0.0.0:3000](http://0.0.0.0:3000) =\> Ctrl-C to shutdown server; call with --help for options [2007-08-28 02:25:35] INFO WEBrick 1.3.1 [2007-08-28 02:25:35] INFO ruby 1.8.5 (2006-08-25) [i486-linux] [2007-08-28 02:25:35] INFO WEBrick::HTTPServer#start: pid=8414 port=3000 127.0.0.1 - - [28/Ago/2007:02:25:42 BRT] “GET / HTTP/1.1” 200 0 - → / [2007-08-28 02:25:47] ERROR LoadError: Expected /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/app/models/archive\_page.rb to define ArchivePage /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active\_support/dependencies.rb:249:in `load_missing_constant' /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active_support/dependencies.rb:452:in `const\_missing’ /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active\_support/dependencies.rb:464:in `const_missing' /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active_support/inflector.rb:250:in `constantize’ (…) /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*/ With webrick running if I modify the category page to this: require ‘page’ require ‘archive\_page’ class CategoryPage \< ArchivePage end It works ok, but when I restart webrick i’ve got this error: /_**/ luke@darkstar:~/devel/covisa$ script/server =\> Booting WEBrick… /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/lib/annotatable.rb:44:in `inherited_without_annotatable': stack level too deep (SystemStackError) from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/lib/annotatable.rb:44:in `inherited\_without\_annotatable’ from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/lib/annotatable.rb:44:in `inherited' from /home/luke/devel/covisa/vendor/extensions/news_articles/app/models/category_page.rb:4 from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active_support/dependencies.rb:203:in `load\_without\_new\_constant\_marking’ from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active\_support/dependencies.rb:203:in `load_file' from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new\_constants\_in’ from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active\_support/dependencies.rb:202:in `load_file' from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active_support/dependencies.rb:94:in `require\_or\_load’ … 30 levels… from /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/railties/lib/commands/server.rb:39 from /usr/local/lib/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `gem_original_require' from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’ from script/server:3 luke@darkstar:~/devel/covisa$ /**_/ Someone can help? ## – Sylvestre Mergulhão - Free Software Development [http://mergulhao.info](http://mergulhao.info) [http://www.euemeu.com](http://www.euemeu.com) ---
**Author:** ![Sylvestre\_MergulhSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f17d59/32.png) [@Sylvestre\_MergulhSS](https://www.ruby-forum.com/u/Sylvestre_MergulhSS)\ **Post date:** [August 28, 2007, 6:45pm UTC](https://www.ruby-forum.com/t/trouble-with-inheritance-in-archivepage/113156/2 "2007-08-28T18:45:54Z")
Searching the list archive i’ve found this thread: [http://lists.radiantcms.org/pipermail/radiant/2007-March/003821.html](http://lists.radiantcms.org/pipermail/radiant/2007-March/003821.html) So, its not possible to inherits from ArchivePage, but only from Page? Thanks, ## – Sylvestre Mergulhão - Free Software Development [http://mergulhao.info](http://mergulhao.info) [http://www.euemeu.com](http://www.euemeu.com) ---
**Author:** ![Sylvestre\_MergulhSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f17d59/32.png) [@Sylvestre\_MergulhSS](https://www.ruby-forum.com/u/Sylvestre_MergulhSS)\ **Post date:** [August 29, 2007, 8:48am UTC](https://www.ruby-forum.com/t/trouble-with-inheritance-in-archivepage/113156/3 "2007-08-29T08:48:34Z")
> ``` > CategoryPage > > ``` > > end There’s no reason for that not to work. Do you have any other extensions installed? Have you modified any of the core files? Do you have files other than: vendor/extensions/news\_articles/news\_articles\_extension.rb vendor/extensions/news\_articles/app/models/category\_page.rb Is there any content in those files beyond what you’ve mentioned? ---
**Author:** ![Sylvestre\_MergulhSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f17d59/32.png) [@Sylvestre\_MergulhSS](https://www.ruby-forum.com/u/Sylvestre_MergulhSS)\ **Post date:** [August 30, 2007, 1:04am UTC](https://www.ruby-forum.com/t/trouble-with-inheritance-in-archivepage/113156/4 "2007-08-30T01:04:49Z")
> Do you have any other extensions installed? Yeap. Sean’s page\_attachment is instaled. > Have you modified any of the core files? No one. My radiant 0.6.2 is instaled as a gem. > Do you have files other than: > > vendor/extensions/news\_articles/news\_articles\_extension.rb > vendor/extensions/news\_articles/app/models/category\_page.rb Only files created by extension generator. I tried again here with a fresh install and fresh extension and the problem still occours. > Is there any content in those files beyond what you’ve mentioned? > No, the contents is exact what I wrote here(copy and paste 😉 Can you try it in your workspace? ## – Sylvestre Mergulhão - Free Software Development [http://mergulhao.info](http://mergulhao.info) [http://www.euemeu.com](http://www.euemeu.com) ---
**Author:** ![Sylvestre\_MergulhSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f17d59/32.png) [@Sylvestre\_MergulhSS](https://www.ruby-forum.com/u/Sylvestre_MergulhSS)\ **Post date:** [August 30, 2007, 1:21am UTC](https://www.ruby-forum.com/t/trouble-with-inheritance-in-archivepage/113156/5 "2007-08-30T01:21:51Z")
> > Is there any content in those files beyond what you’ve mentioned? > > No, the contents is exact what I wrote here(copy and paste 😉 > > Can you try it in your workspace? # cat new\_extension\_extension.rb class NewExtensionExtension \< Radiant::Extension def activate CategoryPage end end # cat app/models/category\_page.rb class CategoryPage \< ArchivePage end # ruby script/console Loading development environment. > > CategoryPage > > =\> CategoryPage Seems to load up the extension fine. Have you tried without page\_attachments installed? ---
**Author:** ![Sylvestre\_MergulhSS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f17d59/32.png) [@Sylvestre\_MergulhSS](https://www.ruby-forum.com/u/Sylvestre_MergulhSS)\ **Post date:** [August 30, 2007, 6:47pm UTC](https://www.ruby-forum.com/t/trouble-with-inheritance-in-archivepage/113156/6 "2007-08-30T18:47:15Z")
On 8/29/07, Daniel S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > # ruby script/console > > Loading development environment. > > > > CategoryPage > > > =\> CategoryPage > > Seems to load up the extension fine. Have you tried without page\_attachments installed? Yeah. In console seems to load ok, but now, try start your webrick and acess radiant. Here produces this error: /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*/ mergulhao@pc325:~/devel/radiant$ script/server =\> Booting WEBrick… =\> Rails application started on [http://0.0.0.0:3000](http://0.0.0.0:3000) =\> Ctrl-C to shutdown server; call with --help for options [2007-08-30 13:45:32] INFO WEBrick 1.3.1 [2007-08-30 13:45:32] INFO ruby 1.8.4 (2005-12-24) [i486-linux] [2007-08-30 13:45:32] INFO WEBrick::HTTPServer#start: pid=11403 port=3000 127.0.0.1 - - [30/Aug/2007:13:45:39 BRT] “GET / HTTP/1.1” 200 0 - → / [2007-08-30 13:45:39] ERROR LoadError: Expected /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/app/models/archive\_page.rb to define ArchivePage /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active\_support/dependencies.rb:249:in `load_missing_constant' /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active_support/dependencies.rb:452:in `const\_missing’ /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active\_support/dependencies.rb:464:in `const_missing' /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active_support/inflector.rb:250:in `constantize’ /usr/lib/ruby/gems/1.8/gems/radiant-0.6.2/vendor/rails/activesupport/lib/active\_support/core\_ext/string/inflections.rb:148:in `constantize’ (…) /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*/ Yes I’ve tried without page\_attachments extension and the problem is the same. I don’t know what to do, but seems to be something related with load path, load order of files or something like this. ## – Sylvestre Mergulhão - Free Software Development [http://mergulhao.info](http://mergulhao.info) [http://www.euemeu.com](http://www.euemeu.com)