Question

I have AS (as a plugin) working in another app just fine (I dont remember this
issue…) – its also using Rails 2.3.9, on same dev box.

Now trying to add it to a new app and getting this error when running
the webrick, script/server:

/Users/kimptoc/.rvm/gems/ruby-1.8.7-p302/gems/activesupport-2.3.9/lib/
active_support/core_ext/module/aliasing.rb:33:in `alias_method':
undefined method `number_of_pages' for class `Paginator' (NameError)
        from /Users/kimptoc/.rvm/gems/ruby-1.8.7-p302/gems/
activesupport-2.3.9/lib/active_support/core_ext/module/aliasing.rb:
33:in `alias_method_chain'
        from /Users/kimptoc/Documents/ruby/borisbikestats/vendor/plugins/
active_scaffold/lib/extensions/paginator_extensions.rb:9

I couldn’t find any previous references to this error.

Embarassingly I dont know which version of AS I am using successfully… it says 1.2RC1 in the CHANGELOG file, but I seem to remember trying a few of the forks…(is there somewhere I can see which fork is in use…). I have tried using the the ‘main’ activescaffold in the new project, but it fails as above, but so does using the same plugin that is in the working project 🙁

Thanks in advance for any pointers as to what I am doing wrong.

Thanks,
Chris

PS Just realised that new Rails was using Rails 3 and old/working one was 2.3.9. It seems you need to use an alternate branch of AS for Rails 3, like this : https://github.com/vhochstein/active_scaffold/wiki

Answer 1

This is just a guess, but built in pagination was removed in Rails 2 as I recall, and you needed to install the classic_pagination plugin to get that functionality back.

I only used ActiveScaffold once, but the error there says paginator_extensions.rb … it’s probably monkey patching the old Rails paginator? Therefore the class exists but the number_of_pages method doesn’t.