#221 ✓invalid
ronin-20496 (at lighthouseapp)

Will_paginate barfs in project with no ActiveRecord

Reported by ronin-20496 (at lighthouseapp) | May 16th, 2008 @ 05:21 PM

If you try to use will_paginate in a Rails project that does not use ActiveRecord, for example:

Rails::Initializer.run do |config|


  1. Project is not currently using a database, so...

config.frameworks -= [ :active_record ]


your the server will die on startup with this error:

/Users/lori/Documents/workspaces/codegear/qconrails/vendor/rails/activesupport/lib/active_support/dependencies.rb:413:in `to_constant_name': Anonymous modules have no name to be referenced by (ArgumentError)

from /Users/lori/Documents/workspaces/codegear/qconrails/vendor/rails/activesupport/lib/active_support/dependencies.rb:225:in `qualified_name_for'

from /Users/lori/Documents/workspaces/codegear/qconrails/vendor/rails/activesupport/lib/active_support/dependencies.rb:490:in `const_missing'

from /Users/lori/Documents/workspaces/codegear/qconrails/vendor/plugins/will_paginate/lib/will_paginate.rb:32:in `enable_activerecord'

from /Users/lori/Documents/workspaces/codegear/qconrails/vendor/plugins/will_paginate/lib/will_paginate.rb:15:in `enable'

from /Users/lori/Documents/workspaces/codegear/qconrails/vendor/plugins/will_paginate/init.rb:2:in `evaluate_init_rb'

from /Users/lori/Documents/workspaces/codegear/qconrails/script/../config/../vendor/rails/railties/lib/rails/plugin.rb:95:in `evaluate_init_rb'

from /Users/lori/Documents/workspaces/codegear/qconrails/vendor/rails/activesupport/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'

from /Users/lori/Documents/workspaces/codegear/qconrails/script/../config/../vendor/rails/railties/lib/rails/plugin.rb:91:in `evaluate_init_rb'

... 35 levels...

from /Users/lori/Documents/workspaces/codegear/qconrails/vendor/rails/railties/lib/commands/server.rb:39

from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'

from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'

from /Users/lori/Documents/workspaces/codegear/qconrails/script/server:3

I don't really have a patch, because I couldn't figure out how to write a test for it. I worked around the problem by commenting out "enable_activerecord"

module WillPaginate

class << self

  1. shortcut for enable_actionpack; enable_activerecord

def enable


  1. enable_activerecord


Comments and changes to this ticket

  • Mislav

    Mislav June 11th, 2008 @ 02:09 PM

    • State changed from “new” to “invalid”
    • Assigned user changed from “Chris Wanstrath” to “Mislav”

    Use the latest gem. You can see by this code that it doesn't call WillPaginate.enable unless both ActiveRecord and ActionController are present.

    If you don't use ActiveRecord, just call


    yourself after requiring the library from the gem.

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