Scaffolding Problems

Hi… Im a brand new ruby on rails developer, and when i make a scaffold
and navigate to the it, i get an error that looks like this.


NameError in PagesController#list

uninitialized constant Page

RAILS_ROOT: ./script/…/config/…
Application Trace | Framework Trace | Full Trace

c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
const_missing' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:inconst_missing’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
module_eval' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:inmodule_eval’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
constantize' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:inconstantize’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/pagination.rb:194:in
paginator_and_collection_for' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/pagination.rb:129:inpaginate’
#{RAILS_ROOT}/app/controllers/pages_controller.rb:31:in list' -e:4:inload’
-e:4

c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
const_missing' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:inconst_missing’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
module_eval' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:inmodule_eval’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
constantize' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:inconstantize’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/pagination.rb:194:in
paginator_and_collection_for' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/pagination.rb:129:inpaginate’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:910:in
send' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:910:inperform_action_without_filters’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/filters.rb:368:in
perform_action_without_benchmark' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/benchmarking.rb:69:inperform_action_without_rescue’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/benchmarking.rb:69:in
measure' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/benchmarking.rb:69:inperform_action_without_rescue’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/rescue.rb:82:in
perform_action' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:381:insend’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:381:in
process_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/filters.rb:377:inprocess_without_session_management_support’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/session_management.rb:117:in
process' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/dispatcher.rb:38:indispatch’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/webrick_server.rb:115:in
handle_dispatch' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/webrick_server.rb:81:inservice’
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in service' c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:inrun’
c:/ruby/lib/ruby/1.8/webrick/server.rb:155:in start_thread' c:/ruby/lib/ruby/1.8/webrick/server.rb:144:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in start_thread' c:/ruby/lib/ruby/1.8/webrick/server.rb:94:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in each' c:/ruby/lib/ruby/1.8/webrick/server.rb:89:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in start' c:/ruby/lib/ruby/1.8/webrick/server.rb:79:instart’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/webrick_server.rb:67:in
dispatch' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/commands/servers/webrick.rb:59 c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire__’
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/commands/server.rb:30
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require__' c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require’
script/server:3

c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
const_missing' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:inconst_missing’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
module_eval' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:inmodule_eval’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
constantize' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:inconstantize’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/pagination.rb:194:in
paginator_and_collection_for' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/pagination.rb:129:inpaginate’
#{RAILS_ROOT}/app/controllers/pages_controller.rb:31:in list' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:910:insend’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:910:in
perform_action_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/filters.rb:368:inperform_action_without_benchmark’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/benchmarking.rb:69:in
perform_action_without_rescue' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/benchmarking.rb:69:inmeasure’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/benchmarking.rb:69:in
perform_action_without_rescue' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/rescue.rb:82:inperform_action’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:381:in
send' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/base.rb:381:inprocess_without_filters’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/filters.rb:377:in
process_without_session_management_support' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.3/lib/action_controller/session_management.rb:117:inprocess’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/dispatcher.rb:38:in
dispatch' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/webrick_server.rb:115:inhandle_dispatch’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/webrick_server.rb:81:in
service' c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:inservice’
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in run' c:/ruby/lib/ruby/1.8/webrick/server.rb:155:instart_thread’
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in start' c:/ruby/lib/ruby/1.8/webrick/server.rb:144:instart_thread’
c:/ruby/lib/ruby/1.8/webrick/server.rb:94:in start' c:/ruby/lib/ruby/1.8/webrick/server.rb:89:ineach’
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in start' c:/ruby/lib/ruby/1.8/webrick/server.rb:79:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in start' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/webrick_server.rb:67:indispatch’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/commands/servers/webrick.rb:59
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require__' c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
require' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/commands/server.rb:30 c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire__’
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:inrequire’
script/server:3
-e:4:in `load’
-e:4

This error occured while loading the following files:
page.rb

Request

Parameters: None

Show session dump


flash: !ruby/hash:ActionController::Flash::FlashHash {}

Response
Headers: {“cookie”=>[], “Cache-Control”=>“no-cache”}


i am using unmodified scaffoding code. thanks for your help!

jordan

When I get this error, it usually means I haven’t created a ‘pages’
table to
support the ‘Page’ scaffold.

just a thought
-Larry

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