When attempting to export issues to a PDF that are sorted by a custom field, an Internal 500 Server error is displayed to the user. The production.log shows that an undefined method being the cause.

Environment -

Found in RC1 0.9, Ruby 1.8.6, Rails 2.3.5, Rack 1.0.1, mysql
User language is English.

Steps to reproduce -

Install RC 1 of 0.9 from RubyForge¶

Create several issues¶

Create a custom field¶

View the issue list¶

Group the results by that custom field¶

Export the issue list to PDF¶

Observe the Internal server 500 error is displayed to the user¶

Note - Log file excerpted below.

Expected Result -

User should be able to export issues to PDF when grouped by a custom field.

Processing IssuesController#index (for XXXXXXXX at 2010-01-18 10:57:58) [POST]
  Parameters: {"project_id"=>"administration", "group_by"=>"cf_3", "set_filter"=>"1", "fields"=>["status_id"], "action"=>"index", "authenticity_token"=>"XXXXXXXXXXXXX=", "operators"=>{"start_date"=>"">t-", "watcher_id"=>"=", "estimated_hours"=>"=", "cf_4"=>"=", "updated_on"=>">t-", "cf_6"=>"=", "priority_id"=>"=", "subject"=>"~", "tracker_id"=>"=", "done_ratio"=>"=", "due_date"=>""=", "author_id"=>"=", "status_id"=>"o"}, "controller"=>"issues", "values"=>{"start_date"=>[""], "created_on"=>[""], "watcher_id"=>["me"], "estimated_hours"=>[""], "cf_4"=>[""], "updated_on"=>[""], "cf_6"=>[""], "priority_id"=>["10"], "subject"=>[""], "tracker_id"=>["2"], "done_ratio"=>[""], "due_date"=>[""], "assigned_to_id"=>["me"], "author_id"=>["me"], "status_id"=>["10"]}, "query"=>{"column_names"=>["tracker", "status", "priority", "subject", "author", "assigned_to", "updated_on"]}, "_"=>""}
Rendering issues/index.rhtml
Completed in 166ms (View: 116, DB: 18) | 200 OK [http://cXXXXXXXXXXX/issues?set_filter=1]


Processing IssuesController#index to pdf (for 207.250.17.230 at 2010-01-18 10:58:00) [GET]
  Parameters: {"format"=>"pdf", "project_id"=>"administration", "action"=>"index", "controller"=>"issues"}

NoMethodError (undefined method `cf_3' for #):
  lib/redmine/export/pdf.rb:149:in `send'
  lib/redmine/export/pdf.rb:149:in `issues_to_pdf'
  lib/redmine/export/pdf.rb:148:in `each'
  lib/redmine/export/pdf.rb:148:in `issues_to_pdf'
  app/controllers/issues_controller.rb:79:in `index'
  app/controllers/issues_controller.rb:75:in `index'

Rendering /XXXXXXXXX/redmine/public/500.html (500 Internal Server Error)