thr3ads.net - Rails - beginner problem [Dec 2009]

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Guille San

2009-Dec-21 15:36 UTC

beginner problem

Hi,
I´m starting using rails. I have one problem. I create a controller, the
code is the next:
class PlayersController < ApplicationController
  scaffold:player
end

I did all the things that I suppose to do, but a problem appears when
try to open my webpage application. The error is the next
 NoMethodError in PlayersController#index

undefined method `scaffold'' for PlayersController:Class

RAILS_ROOT: C:/Instant/rails_apps/players
Application Trace | Framework Trace | Full Trace

C:/Instant/rails_apps/players/app/controllers/players_controller.rb:2

C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:380:in
`load_without_new_constant_marking''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:380:in
`load_file''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in
`new_constants_in''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:379:in
`load_file''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:259:in
`require_or_load''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:425:in
`load_missing_constant''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in
`const_missing''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:92:in
`const_missing''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:361:in
`constantize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in
`each''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in
`constantize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/string/inflections.rb:162:in
`constantize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/routing/route_set.rb:443:in
`recognize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/routing/route_set.rb:436:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:87:in
`dispatch''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:121:in
`_call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:130:in
`build_middleware_stack''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:29:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:29:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in
`cache''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:9:in
`cache''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:28:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/string_coercion.rb:25:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/head.rb:9:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb:24:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/params_parser.rb:15:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/session/cookie_store.rb:93:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/failsafe.rb:26:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`synchronize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:114:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/reloader.rb:34:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:108:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/cgi_process.rb:44:in
`dispatch_cgi''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:101:in
`dispatch_cgi''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:27:in
`dispatch''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/rails.rb:76:in
`process''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/rails.rb:74:in
`synchronize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/rails.rb:74:in
`process''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:159:in
`process_client''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:158:in
`each''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:158:in
`process_client''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`initialize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`new''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:268:in
`initialize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:268:in
`new''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:268:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/configurator.rb:282:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/configurator.rb:281:in
`each''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/configurator.rb:281:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/mongrel_rails:128:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/command.rb:212:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/mongrel_rails:281
C:/Instant/ruby/bin/mongrel_rails:19:in `load''
C:/Instant/ruby/bin/mongrel_rails:19

C:/Instant/rails_apps/players/app/controllers/players_controller.rb:2
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:380:in
`load_without_new_constant_marking''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:380:in
`load_file''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in
`new_constants_in''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:379:in
`load_file''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:259:in
`require_or_load''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:425:in
`load_missing_constant''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in
`const_missing''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:92:in
`const_missing''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:361:in
`constantize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in
`each''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in
`constantize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/string/inflections.rb:162:in
`constantize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/routing/route_set.rb:443:in
`recognize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/routing/route_set.rb:436:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:87:in
`dispatch''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:121:in
`_call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:130:in
`build_middleware_stack''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:29:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:29:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in
`cache''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:9:in
`cache''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:28:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/string_coercion.rb:25:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/head.rb:9:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb:24:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/params_parser.rb:15:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/session/cookie_store.rb:93:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/failsafe.rb:26:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`synchronize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:114:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/reloader.rb:34:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:108:in
`call''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/cgi_process.rb:44:in
`dispatch_cgi''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:101:in
`dispatch_cgi''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:27:in
`dispatch''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/rails.rb:76:in
`process''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/rails.rb:74:in
`synchronize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/rails.rb:74:in
`process''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:159:in
`process_client''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:158:in
`each''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:158:in
`process_client''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`initialize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`new''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:285:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:268:in
`initialize''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:268:in
`new''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel.rb:268:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/configurator.rb:282:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/configurator.rb:281:in
`each''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/configurator.rb:281:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/mongrel_rails:128:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/mongrel/command.rb:212:in
`run''
C:/Instant/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/mongrel_rails:281
C:/Instant/ruby/bin/mongrel_rails:19:in `load''
C:/Instant/ruby/bin/mongrel_rails:19

Request

Parameters:

None

Show session dump

---

Response

Headers:

{"Content-Type"=>"",
 "Cache-Control"=>"no-cache"}




If someone can help me,please

Thanks a lot!
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Aldric Giacomoni

2009-Dec-21 15:47 UTC

head link

Re: beginner problem

Guille San wrote:> Hi,
> I´m starting using rails. I have one problem. I create a controller, the
> code is the next:
> class PlayersController < ApplicationController
>   scaffold:player
> end
"scaffold" is something that you use on the command line, not within 
your code.
Delete the file in which your controller is.
Go on the command line, in the root of your rails application.
Type "ruby script/generate scaffold player name:string".
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Marnen Laibow-Koser

2009-Dec-21 17:59 UTC

head link

Re: beginner problem

Aldric Giacomoni wrote:> Guille San wrote:
>> Hi,
>> I´m starting using rails. I have one problem. I create a controller,
the
>> code is the next:
>> class PlayersController < ApplicationController
>>   scaffold:player
>> end
> 
> "scaffold" is something that you use on the command line, not
within
> your code.
> Delete the file in which your controller is.
> Go on the command line, in the root of your rails application.
> Type "ruby script/generate scaffold player name:string".
Scaffold was a controller method in Rails 1.x.  If you are following a 
tutorial that is having you use it, then you are following a seriously 
outdated tutorial.

Best,
--
Marnen Laibow-Koser
http://www.marnen.org
marnen-sbuyVjPbboAdnm+yROfE0A@public.gmane.org
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Colin Law

2009-Dec-21 20:42 UTC

head link

Re: beginner problem

2009/12/21 Guille San
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>:> Hi,
> I´m starting using rails. I have one problem. I create a controller, the
> code is the next:
> class PlayersController < ApplicationController
>  scaffold:player
> end
>
> I did all the things that I suppose to do, but a problem appears when
> try to open my webpage application. The error is the next
>  NoMethodError in PlayersController#index
>
> undefined method `scaffold'' for PlayersController:Class
As others have said the scaffold method died a long time ago.  I
suggest looking at the RoR guides at http://guides.rubyonrails.org/,
starting with Getting Started obviously.

You will also find google very useful.  A google search for undefined
method scaffold for Class would have provided the answer much quicker
than asking here.

Good luck

Colin

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