Forum: Ruby on Rails SimplaTable with error: singleton can't be dumped

Announcement (2017-05-07): www.ruby-forum.com is now read-only since I unfortunately do not have the time to support and maintain the forum any more. Please see rubyonrails.org/community and ruby-lang.org/en/community for other Rails- und Ruby-related community platforms.
Ef8df511b8c2c08e685a24dc08f30288?d=identicon&s=25 Helder Helder (helderam)
on 2007-06-08 20:50
Hello,

My first PDF report from rails.

When i try to render "tab.render_on(pdf)", I get that error message.

Thanks any help,

Helder


=================================================================
 TypeError in ContasController#plano

singleton can't be dumped

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

/var/lib/gems/1.8/gems/transaction-simple-1.4.0/lib/transaction/simple.rb:129:in
`dump'
/var/lib/gems/1.8/gems/transaction-simple-1.4.0/lib/transaction/simple.rb:129:in
`start_transaction'
/var/lib/gems/1.8/gems/transaction-simple-1.4.0/lib/transaction/simple/group.rb:102:in
`start_transaction'
/var/lib/gems/1.8/gems/transaction-simple-1.4.0/lib/transaction/simple/group.rb:102:in
`each'
/var/lib/gems/1.8/gems/transaction-simple-1.4.0/lib/transaction/simple/group.rb:102:in
`start_transaction'
/var/lib/gems/1.8/gems/pdf-writer-1.1.3/lib/pdf/simpletable.rb:397:in
`render_on'
app/controllers/contas_controller.rb:64:in `plano'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:in
`send'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:in
`perform_action_without_filters'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:632:in
`call_filter'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:634:in
`call_filter'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:638:in
`call_filter'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:438:in
`call'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:637:in
`call_filter'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:638:in
`call_filter'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:438:in
`call'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:637:in
`call_filter'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:619:in
`perform_action_without_benchmark'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:in
`perform_action_without_rescue'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:in
`perform_action_without_rescue'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/rescue.rb:83:in
`perform_action'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:in
`send'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:in
`process_without_filters'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:624:in
`process_without_session_management_support'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/session_management.rb:114:in
`process'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:330:in
`process'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:78:in
`process'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:76:in
`synchronize'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:76:in
`process'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:618:in
`process_client'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:617:in `each'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:617:in
`process_client'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `run'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `initialize'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `new'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `run'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in `initialize'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in `new'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in `run'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:271:in
`run'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:270:in
`each'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:270:in
`run'
/var/lib/gems/1.8/gems/mongrel-1.0.1/bin/mongrel_rails:127:in `run'
/var/lib/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/command.rb:211:in `run'
/var/lib/gems/1.8/gems/mongrel-1.0.1/bin/mongrel_rails:243
/var/lib/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:488:in
`load'
/var/lib/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:488:in
`load'
/var/lib/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in
`new_constants_in'
/var/lib/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:488:in
`load'
/var/lib/gems/1.8/gems/rails-1.2.3/lib/commands/servers/mongrel.rb:60
/var/lib/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require'
/var/lib/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in
`new_constants_in'
/var/lib/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in
`require'
/var/lib/gems/1.8/gems/rails-1.2.3/lib/commands/server.rb:39
This topic is locked and can not be replied to.