We are unable to run "Project Status" or "Requirement Coverage" Reports (with module failing)

Question

Recently, we found that when running certain reports (Either Project Status or Requirement Coverage) the report fails with a popup showing:

undefined method `[]' for nil:NilClass

Examining the httpd access logs I see the following:

"GET /report/requirement_coverage/?sort_by=id&test_object_ids=12 HTTP/1.1" 403 38 "http://tarantula.xxxxx.xxxx/"

in the production.log file, we also see this:

undefined method []' for nil:NilClass /opt/tarantula/rails/lib/priority_extensions.rb:9:inpriority_name' /opt/tarantula/rails/app/models/report/requirement_coverage.rb:115:in case_info' /opt/tarantula/rails/app/models/report/requirement_coverage.rb:77:inblock (2 levels) in do_query' /opt/tarantula/rails/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.18/lib/active_record/associations/collection_proxy.rb:91:in each' /opt/tarantula/rails/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.18/lib/active_record/associations/collection_proxy.rb:91:inmethod_missing' /opt/tarantula/rails/app/models/report/requirement_coverage.rb:77:in block in do_query' /opt/tarantula/rails/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.18/lib/active_record/relation/delegation.rb:6:ineach' /opt/tarantula/rails/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.18/lib/active_record/relation/delegation.rb:6:in each' /opt/tarantula/rails/app/models/report/requirement_coverage.rb:66:indo_query'

lots more under this followd by:

/opt/tarantula/rails/vendor/bundle/ruby/1.9.1/gems/passenger-3.0.19/helper-scripts/passenger-spawn-server:99:in `' Completed 403 Forbidden in 113381.4ms (Views: 0.2ms | ActiveRecord: 7849.2ms)

NOTE: this is not my code, but code from a module of Testia Tarantula

=begin rdoc

Include this in a model which is to be prioritized.

 =end
 module PriorityExtensions

   def priority_name
     Project::Priorities.detect{|p| p[:value] == self.priority}[:name]
   end

   def priority=(p)
     if p.is_a? String
       p_val = Project::Priorities.detect{|pp| pp[:name] == p.downcase}
       if p_val
         self[:priority] = p_val[:value]
       else
         raise "Invalid priority '#{p}' for #{self.class} (id #{self.id})"
       end
     else
       self[:priority] = p
     end
   end

   def self.included(model)
     model.validates_inclusion_of :priority, :in =>           Project::Priorities.map{|p| p[:value]}
   end

 end

Answer 1

发现问题，表“案例”中的列“优先级”已经以某种方式被更改为无效的NULL。将值更改为“0”（正常）可解决问题。