thr3ads.net - Rails - paginate causes unitialized constant error [Apr 2007]

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Michael Satterwhite

2007-Apr-26 01:05 UTC

paginate causes unitialized constant error

Earlier this week, I posted a question about scaffold causing an
unitialized constant. As no one seemed to have any information, I
started coding without the scaffolding. I''m now getting the error
again.

In my controller, I started with the following line of code in a list
type method:
      @quotes = Quotes.find :all

This works fine. As there are many quotes in the database, however, I
replaced it with the following line:
    @quote_pages, @quotes = paginate(:quotes, :order => "author")

This was the *ONLY* change. Immediately, my error came back. For those
that didn''t see the original post, here''s the error that is
returned:

-------------------------------------------------------------

uninitialized constant Quote

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

/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
`const_missing''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in
`const_missing''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
`constantize''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:in
`constantize''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:194:in
`paginator_and_collection_for''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:129:in
`paginate''
app/controllers/admin_controller.rb:6:in `quotes''

/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
`const_missing''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in
`const_missing''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
`constantize''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:in
`constantize''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:194:in
`paginator_and_collection_for''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:129:in
`paginate''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:941:in
`send''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:941:in
`perform_action_without_filters''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/filters.rb:368:in
`perform_action_without_benchmark''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr//lib/ruby/1.8/benchmark.rb:293:in `measure''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/rescue.rb:82:in
`perform_action''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:408:in
`send''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:408:in
`process_without_filters''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/filters.rb:377:in
`process_without_session_management_support''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/session_management.rb:117:in
`process''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/dispatcher.rb:38:in
`dispatch''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/webrick_server.rb:115:in
`handle_dispatch''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/webrick_server.rb:81:in
`service''
/usr//lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
/usr//lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
/usr//lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
/usr//lib/ruby/1.8/webrick/server.rb:162:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
/usr//lib/ruby/1.8/webrick/server.rb:95:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:92:in `each''
/usr//lib/ruby/1.8/webrick/server.rb:92:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:23:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/webrick_server.rb:67:in
`dispatch''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/commands/servers/webrick.rb:59
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/commands/server.rb:30
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
script/server:3

/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
`const_missing''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in
`const_missing''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
`constantize''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:in
`constantize''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:194:in
`paginator_and_collection_for''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:129:in
`paginate''
app/controllers/admin_controller.rb:6:in `quotes''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:941:in
`send''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:941:in
`perform_action_without_filters''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/filters.rb:368:in
`perform_action_without_benchmark''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr//lib/ruby/1.8/benchmark.rb:293:in `measure''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/rescue.rb:82:in
`perform_action''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:408:in
`send''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/base.rb:408:in
`process_without_filters''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/filters.rb:377:in
`process_without_session_management_support''
/usr//lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/session_management.rb:117:in
`process''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/dispatcher.rb:38:in
`dispatch''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/webrick_server.rb:115:in
`handle_dispatch''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/webrick_server.rb:81:in
`service''
/usr//lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
/usr//lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
/usr//lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
/usr//lib/ruby/1.8/webrick/server.rb:162:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
/usr//lib/ruby/1.8/webrick/server.rb:95:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:92:in `each''
/usr//lib/ruby/1.8/webrick/server.rb:92:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:23:in `start''
/usr//lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/webrick_server.rb:67:in
`dispatch''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/commands/servers/webrick.rb:59
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
/usr//lib/ruby/gems/1.8/gems/rails-1.1.6/lib/commands/server.rb:30
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
/usr//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require''
/usr//lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
script/server:3

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

----------------------------------------------------------------------
I haven''t a clue what might be wrong. Can anybody suggest something for
me?

Thanks in advance
---Michael

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Rafael García

2007-Apr-26 09:39 UTC

head link

Re: paginate causes unitialized constant error

Michael Satterwhite wrote:> Earlier this week, I posted a question about scaffold causing an
> unitialized constant. As no one seemed to have any information, I
> started coding without the scaffolding. I''m now getting the error
again.
> 
> In my controller, I started with the following line of code in a list
> type method:
>       @quotes = Quotes.find :all
   Your model "Quotes" is plural, normally models are singular
(convention)
> 
> This works fine. As there are many quotes in the database, however, I
> replaced it with the following line:
>     @quote_pages, @quotes = paginate(:quotes, :order =>
"author")
   I think that paginate follow the convention and convert :quotes in
model Quote (singular). You can see :singular_name or :class_name
paginate options in
http://api.rubyonrails.org/classes/ActionController/Pagination.html#M000130

Regards!

-- 
Posted via http://www.ruby-forum.com/.

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Rails - Apr 2007 - paginate causes unitialized constant error

paginate causes unitialized constant error

Re: paginate causes unitialized constant error