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
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