error from the form

undefined method `app' for #<CandidateMembershipForm:0x243bac8>

full trace

/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.1/lib/active_record/attribute_methods.rb:256:in `method_missing'
/Users/patrickberkeley/code/nwm_application/app/models/App.rb:51:in `method_missing'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_helper.rb:621:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_helper.rb:621:in `value'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_helper.rb:612:in `value'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_options_helper.rb:396:in `to_collection_select_tag'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_options_helper.rb:133:in `collection_select'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_options_helper.rb:445:in `collection_select'
/Users/patrickberkeley/code/nwm_application/app/views/membership_forms/shared/_form_1.html.erb:18:in `_run_erb_47app47views47membership_forms47shared47_form_146html46erb'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/base.rb:342:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/base.rb:342:in `execute'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template_handlers/compilable.rb:29:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template_handlers/compilable.rb:29:in `render'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/partial_template.rb:20:in `render'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/benchmarking.rb:26:in `benchmark'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/benchmark.rb:8:in `realtime'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/benchmarking.rb:26:in `benchmark'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/partial_template.rb:19:in `render'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template.rb:22:in `render_template'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/partials.rb:110:in `render_partial'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/base.rb:277:in `render'
/Users/patrickberkeley/code/nwm_application/app/views/membership_forms/candidate/candidate_membership_form_0.html.erb:5:in `_run_erb_47app47views47membership_forms47candidate47candidate_membership_form_046html46erb'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_helper.rb:317:in `fields_for'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/form_helper.rb:253:in `form_for'
/Users/patrickberkeley/code/nwm_application/app/views/membership_forms/candidate/candidate_membership_form_0.html.erb:3:in `_run_erb_47app47views47membership_forms47candidate47candidate_membership_form_046html46erb'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/base.rb:342:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/base.rb:342:in `execute'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template_handlers/compilable.rb:29:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template_handlers/compilable.rb:29:in `render'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template.rb:35:in `render'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template.rb:22:in `render_template'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/base.rb:248:in `render_file'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:1112:in `render_for_file'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:869:in `render_with_no_layout'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:884:in `render_with_no_layout'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/layout.rb:251:in `render_without_benchmark'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/benchmarking.rb:51:in `render'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/benchmark.rb:8:in `realtime'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/benchmarking.rb:51:in `render'
/Users/patrickberkeley/code/nwm_application/app/controllers/membership_forms_controller.rb:109:in `next_step'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:1166:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:1166:in `perform_action_without_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/filters.rb:579:in `call_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/filters.rb:572:in `perform_action_without_benchmark'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/rescue.rb:201:in `perform_action_without_caching'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/caching/sql_cache.rb:13:in `passenger_orig_perform_action'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.1/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.1/lib/active_record/query_cache.rb:8:in `cache'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/caching/sql_cache.rb:12:in `passenger_orig_perform_action'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:53:in `perform_action'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:529:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:529:in `process_without_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/filters.rb:568:in `process_without_session_management_support'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/session_management.rb:130:in `process'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:389:in `process'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:149:in `handle_request'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:107:in `dispatch'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:104:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:104:in `dispatch'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:35:in `dispatch'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:38:in `process_request'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_request_handler.rb:163:in `main_loop'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:307:in `start_request_handler'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:276:in `handle_spawn_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in `safe_fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `safe_fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:274:in `handle_spawn_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in `safe_fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in `safe_fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:273:in `handle_spawn_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `__send__'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `main_loop'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in `start_synchronously'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:135:in `start'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in `fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in `start'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:177:in `start'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:270:in `handle_spawn_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:263:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:263:in `handle_spawn_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `__send__'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `main_loop'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in `start_synchronously'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:135:in `start'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in `fork'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in `start'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:87:in `start'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:218:in `spawn_rails_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in `spawn_rails_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:122:in `spawn_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:247:in `handle_spawn_application'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `__send__'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in `main_loop'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in `start_synchronously'
/usr/local/lib/ruby/gems/1.8/gems/passenger-2.0.3/bin/passenger-spawn-server:46

gistfile3.txt