tags:

views:

591

answers:

2
+1  Q: 

Rails "undefined local variable or method" for an attr that isn't even refrenced

I'm at a loss here. When running in Dev mode (script/server) I the error "undefined local variable or method 'id' for #<InsertModelNameHere:0x7f19bdb87dc8>" at random times when I try to list entries for a number of my models. If I refresh the page it works fine and I'm assuming that I only see it in dev because everything gets reloaded for each request. Maybe a race condition or something going on? I'm not even referencing the "id" attribute (legacy table that uses a different key naming convention) in the views where this is an issue, One of my co-workers informed me that rails will create an "id" attribute based on the primary key defined in the model though.

Below is the code for the view, the error message,a and the stack trace. I'm running rails 2.3.3.

View:

<h2 class="textCenter">To Do List</h2>
<% form_tag({:action => "list"}, :method => "get") do %>
 <div class="full_width textCenter">
  <%= text_field_tag "q", params[:q] %>
  <input type="submit" value="Search" />
 </div>
<% end %>
<table class="full_width list">
 <thead >
  <tr >
   <th >ID</th>
   <th >Name</th>
   <th >Resource ID</th>
   <th >Company</th>
   <th >&nbsp;</th>
   <th >&nbsp;</th>
  </tr>
 </thead>
 <tbody >
  <% begin %>
   <% @todos.each do |todo| %> 
    <tr class="<%= cycle "striped", "" %>" >
     <td ><%= todo.pk_todo_id %></td>
     <td ><%= todo.name %></td>
     <td ><%= todo.fk_resource_id %></td>
     <td ><%= todo.fk_company_id %></td>
     <td ><%= link_to "STA", {:controller => "stas", :action => "list", :id => todo.fk_resource_id} %></td>
     <td ><%= link_to "Edit", {:controller => "todos", :action => "edit", :id => todo.pk_todo_id} %></td>
    </tr>
   <% end %>
  <% rescue => e; puts e.message; puts e.backtrace %>
  <% end %>
 </tbody>
</table>

Error: undefined local variable or method 'id' for #<Todo:0x7f19bdb87dc8>

/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/attribute_methods.rb:260:in 'method_missing'
/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/attribute_methods.rb:249:in 'method_missing'
/home/scott/Projects/cllsuite/trunk/app/views/todos/list.rhtml:25:in '_run_rhtml_app47views47todos47list46rhtml'
/home/scott/Projects/cllsuite/trunk/app/views/todos/list.rhtml:23:in 'each'
/home/scott/Projects/cllsuite/trunk/app/views/todos/list.rhtml:23:in '_run_rhtml_app47views47todos47list46rhtml'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/renderable.rb:34:in 'send'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/renderable.rb:34:in 'render'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/base.rb:301:in 'with_template'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/renderable.rb:30:in 'render'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/template.rb:199:in 'render_template'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/base.rb:260:in 'render'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/base.rb:343:in '_render_with_layout'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_view/base.rb:257:in 'render'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:1246:in 'render_for_file'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:941:in 'render_without_benchmark'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/benchmarking.rb:51:in 'render'
/var/lib/gems/1.8/gems/activesupport-2.3.3/lib/active_support/core_ext/benchmark.rb:17:in 'ms'
/usr/lib/ruby/1.8/benchmark.rb:308:in 'realtime'
/var/lib/gems/1.8/gems/activesupport-2.3.3/lib/active_support/core_ext/benchmark.rb:17:in 'ms'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/benchmarking.rb:51:in 'render'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:1322:in 'default_render'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:1328:in 'perform_action_without_filters'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/filters.rb:617:in 'call_filters'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/filters.rb:610:in 'perform_action_without_benchmark'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/benchmarking.rb:68:in 'perform_action_without_rescue'
/var/lib/gems/1.8/gems/activesupport-2.3.3/lib/active_support/core_ext/benchmark.rb:17:in 'ms'
/usr/lib/ruby/1.8/benchmark.rb:308:in 'realtime'
/var/lib/gems/1.8/gems/activesupport-2.3.3/lib/active_support/core_ext/benchmark.rb:17:in 'ms'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/benchmarking.rb:68:in 'perform_action_without_rescue'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/rescue.rb:160:in 'perform_action_without_flash'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/flash.rb:146:in 'perform_action'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:527:in 'send'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:527:in 'process_without_filters'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/filters.rb:606:in 'process'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:391:in 'process'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/base.rb:386:in 'call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/routing/route_set.rb:434:in 'call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/dispatcher.rb:88:in 'dispatch'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/dispatcher.rb:111:in '_call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/dispatcher.rb:82:in 'initialize'
/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/query_cache.rb:29:in 'call'
/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/query_cache.rb:29:in 'call'
/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in 'cache'
/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/query_cache.rb:9:in 'cache'
/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/query_cache.rb:28:in 'call'
/var/lib/gems/1.8/gems/activerecord-2.3.3/lib/active_record/connection_adapter /abstract/connection_pool.rb:361:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/head.rb:9:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/methodoverride.rb:24:in 'call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/params_parser.rb:15:in 'call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/session/cookie_store.rb:93:in 'call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/reloader.rb:29:in 'call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/failsafe.rb:26:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/lock.rb:11:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/lock.rb:11:in 'synchronize'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/lock.rb:11:in 'call'
/var/lib/gems/1.8/gems/actionpack-2.3.3/lib/action_controller/dispatcher.rb:106:in 'call'
/var/lib/gems/1.8/gems/rails-2.3.3/lib/rails/rack/static.rb:31:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/urlmap.rb:46:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/urlmap.rb:40:in 'each'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/urlmap.rb:40:in 'call'
/var/lib/gems/1.8/gems/rails-2.3.3/lib/rails/rack/log_tailer.rb:17:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/content_length.rb:13:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/chunked.rb:15:in 'call'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/handler/mongrel.rb:61:in 'process'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:159:in 'process_client'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in 'each'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in 'process_client'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in 'run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in 'initialize'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in 'new'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in 'run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in 'initialize'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in 'new'
/var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in 'run'
/var/lib/gems/1.8/gems/rack-1.0.0/lib/rack/handler/mongrel.rb:34:in 'run'
/var/lib/gems/1.8/gems/rails-2.3.3/lib/commands/server.rb:111
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in 'gem_original_require'
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in 'require'
script/server:3
+2  A: 

Hi Scott,

Have you set the primary_key on Todo?

class Todo
  set_primary_key 'pk_todo_id'

end

I think that may be your issue. Let me know what happens.

Good luck!

mixonic  2009-08-05 17:32:34
Yeah, I've got that set already
 2009-08-05 17:33:09
This also doesn't happen every time I hit the veiw. It happens maybe half of the time.
 2009-08-05 17:34:17
Hey Scott, so maybe this is a 2.3.3 issue. See: https://rails.lighthouseapp.com/projects/8994/tickets/2948-exception-a-copy-of-actorscontroller-has-been-removed-from-the-module-tree-but-is-still-active and a possible fix in http://github.com/rails/rails/commit/d37ac7958fc88fdbf37a8948102f6b4e45c530b3. We had this problem, apparently it doesn't happen in production mode or under the thin server. Try using thin, or try to recreate it in production mode. The behavior is that classes are reloaded incorrectly, so a stub of Todo is loaded instead of the real class (so your primary key is skipped).
mixonic  2009-08-05 17:44:20
Having trouble applying the patch, will see if it fixed it when I finally get it to work
 2009-08-05 18:14:06
A: 

I'm going to revert back to 2.3.2 since I can't get that patch to apply correctly. I'm going to assume that's the issue, especially since it's specific to 2.3.3. Thanks for the help everyone.

 2009-08-05 18:33:55
Yeah we've just been working around it by using thin to start our dev servers directly. 2.3.3 was a messy release.
mixonic  2009-08-05 18:53:14

related questions

Best place to get Ruby on Vista up and running as dev environment
How can I encode xml files to xfdl (base64-gzip)?
What is the best way to learn Ruby?
Learning Ruby on Rails any good for Grails?
How to sell Python to a client/boss/person with lots of cash
How do I create a Class using the Singleton Design Pattern in Ruby?
How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
Why Should I Learn Ruby?
How do I create a new Ruby on Rails application using MySQL instead of SQLite?
How do I rake tasks within a ruby script?
Ruby On Rails with Windows Vista - Best Setup?
Mapping values from two array in Ruby
Reverse DNS in Ruby?
Text Editor For Linux (Besides Vi)?
What is good forum software to add to an existing Rails application?
Calling Bash Commands From Ruby
How can I modify .xfdl files? (Update #1)
How do I use (n)curses in Ruby?
Open Source Ruby Projects
How do I fix 'Unprocessed view path found' error with ExceptionNotifier plugin in rails 2.1?
When to use lambda, when to use Proc.new?
Frequent SystemExit in Ruby when making HTTP calls
Implementation of "Remember me" in a Rails application.
.NET Migrations Engine
How do I add existing comments to RDoc in Ruby?