RuntimeError in Registers#add

Showing registers/add.html.erb where line #3 raised:

Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id

Extracted source (around line #3):

1: <h1>Register for a Course</h1>
2:
3: <% form_for(@register) do |f| %>
4:   <%= f.error_messages %>
5:
6:     <%= f.label :form_of_payment %><br />

RAILS_ROOT: /home/tim/Code/mldic
Application Trace | Framework Trace | Full Trace

vendor/rails/actionpack/lib/action_controller/record_identifier.rb:72:in `dom_id'
vendor/rails/actionpack/lib/action_view/helpers/record_identification_helper.rb:16:in `dom_id'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:264:in `apply_form_for_options!'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:248:in `form_for'
app/views/registers/add.html.erb:3:in `_run_erb_47app47views47registers47add46html46erb'

vendor/rails/actionpack/lib/action_controller/record_identifier.rb:72:in `dom_id'
vendor/rails/actionpack/lib/action_view/helpers/record_identification_helper.rb:16:in `dom_id'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:264:in `apply_form_for_options!'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:248:in `form_for'
vendor/rails/actionpack/lib/action_view/base.rb:338:in `send'
vendor/rails/actionpack/lib/action_view/base.rb:338:in `execute'
vendor/rails/actionpack/lib/action_view/template_handlers/compilable.rb:29:in `send'
vendor/rails/actionpack/lib/action_view/template_handlers/compilable.rb:29:in `render'
vendor/rails/actionpack/lib/action_view/template.rb:35:in `render'
vendor/rails/actionpack/lib/action_view/template.rb:22:in `render_template'
vendor/rails/actionpack/lib/action_view/base.rb:245:in `render_file'
vendor/rails/actionpack/lib/action_controller/base.rb:1108:in `render_for_file'
vendor/rails/actionpack/lib/action_controller/base.rb:841:in `render_with_no_layout'
vendor/rails/actionpack/lib/action_controller/layout.rb:251:in `render_without_benchmark'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:8:in `realtime'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
vendor/rails/actionpack/lib/action_controller/base.rb:1157:in `default_render'
vendor/rails/actionpack/lib/action_controller/base.rb:1168:in `perform_action_without_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:580:in `call_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:573:in `perform_action_without_benchmark'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
vendor/rails/actionpack/lib/action_controller/rescue.rb:201:in `perform_action_without_caching'
vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:13:in `perform_action'
vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
vendor/rails/activerecord/lib/active_record/query_cache.rb:8:in `cache'
vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:12:in `perform_action'
vendor/rails/actionpack/lib/action_controller/base.rb:529:in `send'
vendor/rails/actionpack/lib/action_controller/base.rb:529:in `process_without_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:569:in `process_without_session_management_support'
vendor/rails/actionpack/lib/action_controller/session_management.rb:130:in `process'
vendor/rails/actionpack/lib/action_controller/base.rb:389:in `process'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:149:in `handle_request'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:107:in `dispatch'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:104:in `synchronize'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:104:in `dispatch'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:35:in `dispatch'
/usr/lib/ruby/1.8/mongrel/rails.rb:76:in `process'
/usr/lib/ruby/1.8/mongrel/rails.rb:74:in `synchronize'
/usr/lib/ruby/1.8/mongrel/rails.rb:74:in `process'
/usr/lib/ruby/1.8/mongrel.rb:159:in `process_client'
/usr/lib/ruby/1.8/mongrel.rb:158:in `each'
/usr/lib/ruby/1.8/mongrel.rb:158:in `process_client'
/usr/lib/ruby/1.8/mongrel.rb:285:in `run'
/usr/lib/ruby/1.8/mongrel.rb:285:in `initialize'
/usr/lib/ruby/1.8/mongrel.rb:285:in `new'
/usr/lib/ruby/1.8/mongrel.rb:285:in `run'
/usr/lib/ruby/1.8/mongrel.rb:268:in `initialize'
/usr/lib/ruby/1.8/mongrel.rb:268:in `new'
/usr/lib/ruby/1.8/mongrel.rb:268:in `run'
/usr/lib/ruby/1.8/mongrel/configurator.rb:282:in `run'
/usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `each'
/usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `run'
/usr/lib/ruby/1.8/mongrel_rails:129:in `run'
/usr/lib/ruby/1.8/mongrel/command.rb:212:in `run'
/usr/lib/ruby/1.8/mongrel_rails:282
vendor/rails/activesupport/lib/active_support/dependencies.rb:502:in `load'
vendor/rails/activesupport/lib/active_support/dependencies.rb:502:in `load'
vendor/rails/activesupport/lib/active_support/dependencies.rb:354:in `new_constants_in'
vendor/rails/activesupport/lib/active_support/dependencies.rb:502:in `load'
vendor/rails/railties/lib/commands/servers/mongrel.rb:64
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `require'
vendor/rails/activesupport/lib/active_support/dependencies.rb:509:in `require'
vendor/rails/activesupport/lib/active_support/dependencies.rb:354:in `new_constants_in'
vendor/rails/activesupport/lib/active_support/dependencies.rb:509:in `require'
vendor/rails/railties/lib/commands/server.rb:39
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `require'
script/server:3

vendor/rails/actionpack/lib/action_controller/record_identifier.rb:72:in `dom_id'
vendor/rails/actionpack/lib/action_view/helpers/record_identification_helper.rb:16:in `dom_id'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:264:in `apply_form_for_options!'
vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:248:in `form_for'
app/views/registers/add.html.erb:3:in `_run_erb_47app47views47registers47add46html46erb'
vendor/rails/actionpack/lib/action_view/base.rb:338:in `send'
vendor/rails/actionpack/lib/action_view/base.rb:338:in `execute'
vendor/rails/actionpack/lib/action_view/template_handlers/compilable.rb:29:in `send'
vendor/rails/actionpack/lib/action_view/template_handlers/compilable.rb:29:in `render'
vendor/rails/actionpack/lib/action_view/template.rb:35:in `render'
vendor/rails/actionpack/lib/action_view/template.rb:22:in `render_template'
vendor/rails/actionpack/lib/action_view/base.rb:245:in `render_file'
vendor/rails/actionpack/lib/action_controller/base.rb:1108:in `render_for_file'
vendor/rails/actionpack/lib/action_controller/base.rb:841:in `render_with_no_layout'
vendor/rails/actionpack/lib/action_controller/layout.rb:251:in `render_without_benchmark'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
vendor/rails/activesupport/lib/active_support/core_ext/benchmark.rb:8:in `realtime'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in `render'
vendor/rails/actionpack/lib/action_controller/base.rb:1157:in `default_render'
vendor/rails/actionpack/lib/action_controller/base.rb:1168:in `perform_action_without_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:580:in `call_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:573:in `perform_action_without_benchmark'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
vendor/rails/actionpack/lib/action_controller/rescue.rb:201:in `perform_action_without_caching'
vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:13:in `perform_action'
vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
vendor/rails/activerecord/lib/active_record/query_cache.rb:8:in `cache'
vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:12:in `perform_action'
vendor/rails/actionpack/lib/action_controller/base.rb:529:in `send'
vendor/rails/actionpack/lib/action_controller/base.rb:529:in `process_without_filters'
vendor/rails/actionpack/lib/action_controller/filters.rb:569:in `process_without_session_management_support'
vendor/rails/actionpack/lib/action_controller/session_management.rb:130:in `process'
vendor/rails/actionpack/lib/action_controller/base.rb:389:in `process'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:149:in `handle_request'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:107:in `dispatch'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:104:in `synchronize'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:104:in `dispatch'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
vendor/rails/actionpack/lib/action_controller/dispatcher.rb:35:in `dispatch'
/usr/lib/ruby/1.8/mongrel/rails.rb:76:in `process'
/usr/lib/ruby/1.8/mongrel/rails.rb:74:in `synchronize'
/usr/lib/ruby/1.8/mongrel/rails.rb:74:in `process'
/usr/lib/ruby/1.8/mongrel.rb:159:in `process_client'
/usr/lib/ruby/1.8/mongrel.rb:158:in `each'
/usr/lib/ruby/1.8/mongrel.rb:158:in `process_client'
/usr/lib/ruby/1.8/mongrel.rb:285:in `run'
/usr/lib/ruby/1.8/mongrel.rb:285:in `initialize'
/usr/lib/ruby/1.8/mongrel.rb:285:in `new'
/usr/lib/ruby/1.8/mongrel.rb:285:in `run'
/usr/lib/ruby/1.8/mongrel.rb:268:in `initialize'
/usr/lib/ruby/1.8/mongrel.rb:268:in `new'
/usr/lib/ruby/1.8/mongrel.rb:268:in `run'
/usr/lib/ruby/1.8/mongrel/configurator.rb:282:in `run'
/usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `each'
/usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `run'
/usr/lib/ruby/1.8/mongrel_rails:129:in `run'
/usr/lib/ruby/1.8/mongrel/command.rb:212:in `run'
/usr/lib/ruby/1.8/mongrel_rails:282
vendor/rails/activesupport/lib/active_support/dependencies.rb:502:in `load'
vendor/rails/activesupport/lib/active_support/dependencies.rb:502:in `load'
vendor/rails/activesupport/lib/active_support/dependencies.rb:354:in `new_constants_in'
vendor/rails/activesupport/lib/active_support/dependencies.rb:502:in `load'
vendor/rails/railties/lib/commands/servers/mongrel.rb:64
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `require'
vendor/rails/activesupport/lib/active_support/dependencies.rb:509:in `require'
vendor/rails/activesupport/lib/active_support/dependencies.rb:354:in `new_constants_in'
vendor/rails/activesupport/lib/active_support/dependencies.rb:509:in `require'
vendor/rails/railties/lib/commands/server.rb:39
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in `require'
script/server:3

Request

Parameters:

None

Show session dump

---
:user: !ruby/object:User
  attributes:
    salt: oYlUmERjzB
    city: Big Rapids
    address1: 123 Dreary Ln.
    created_at: 2009-01-09 21:37:33
    zip: "49307"
    address2: Apt. H3
    hashedpassword: fadcc24bcf3d8622ed22d3aa09a7540c36d576e3
    hashedanswer: a0375454ca925f52658223e492bc5f7c22af28c5
    secretQuestion: what time is it?
    updated_at: 2009-01-09 21:46:08
    admin: "0"
    phone1: 231-123-456
    lname: Two
    id: "2"
    phone2: 231-287-8918
    fname: Test
    affiliation: SLU
    active: "1"
    email: hansent3@ferris.edu
    state: "23"
  attributes_cache: {}

  messages:
  permission:
:csrf_id: c3537d7ab05f66a0fe56ddbbbf776ae7
flash: !map:ActionController::Flash::FlashHash {}


Response

Headers:

{"cookie"=>[],
 "Cache-Control"=>"no-cache"}