Reporter: deejay1
[Submitted to the original trac issue database at 9.41am, Sunday, 14th December 2008]

I got the following error while trying to login after creating an account.
Steps to this error:

1. sign up
2. leave the resulting page open
3. open the confirmation link in another tab
4. press "confirm", edit the data
5. input username and pass in the previous window (the one after signup not confirmation)
6. read error ;)

ActionController::DoubleRenderError in UserController#login

Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".

RAILS_ROOT: /home/edgemaster/apis/api06
Application Trace | Framework Trace | Full Trace

/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1056:in redirect_to' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1063:in redirect_to'
/home/edgemaster/apis/api06/app/controllers/user_controller.rb:136:in `login'

/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1056:in redirect_to' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1063:in redirect_to'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1166:in send' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1166:in perform_action_without_filters'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/filters.rb:579:in call_filters' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/filters.rb:572:in perform_action_without_benchmark'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/benchmarking.rb:68:in perform_action_without_rescue' /usr/lib/ruby/1.8/benchmark.rb:293:in measure'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/benchmarking.rb:68:in perform_action_without_rescue' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/rescue.rb:201:in perform_action_without_caching'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/caching/sql_cache.rb:13:in passenger_orig_perform_action' /usr/lib/ruby/gems/1.8/gems/activerecord-2.1.2/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in cache'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.1.2/lib/active_record/query_cache.rb:8:in cache' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/caching/sql_cache.rb:12:in passenger_orig_perform_action'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:53:in perform_action' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:529:in send'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:529:in process_without_filters' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/filters.rb:568:in process_without_session_management_support'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/session_management.rb:130:in process' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:389:in process'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:149:in handle_request' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:107:in dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:104:in synchronize' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:104:in dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:120:in dispatch_cgi' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:35:in dispatch'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:38:in process_request' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_request_handler.rb:163:in main_loop'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:307:in start_request_handler' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:276:in handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in safe_fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in safe_fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:274:in handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in safe_fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in safe_fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:273:in handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in __send__' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in main_loop'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in start_synchronously' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:135:in start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:177:in start' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:270:in handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:263:in synchronize' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:263:in handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in __send__' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in main_loop'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in start_synchronously' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:135:in start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:87:in start' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:218:in spawn_rails_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in synchronize' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in spawn_rails_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:122:in spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:247:in handle_spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in __send__' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in main_loop'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in `start_synchronously'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/bin/passenger-spawn-server:46

/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1056:in redirect_to' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1063:in redirect_to'
/home/edgemaster/apis/api06/app/controllers/user_controller.rb:136:in login' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1166:in send'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:1166:in perform_action_without_filters' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/filters.rb:579:in call_filters'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/filters.rb:572:in perform_action_without_benchmark' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/benchmarking.rb:68:in perform_action_without_rescue'
/usr/lib/ruby/1.8/benchmark.rb:293:in measure' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/benchmarking.rb:68:in perform_action_without_rescue'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/rescue.rb:201:in perform_action_without_caching' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/caching/sql_cache.rb:13:in passenger_orig_perform_action'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.1.2/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in cache' /usr/lib/ruby/gems/1.8/gems/activerecord-2.1.2/lib/active_record/query_cache.rb:8:in cache'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/caching/sql_cache.rb:12:in passenger_orig_perform_action' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:53:in perform_action'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:529:in send' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:529:in process_without_filters'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/filters.rb:568:in process_without_session_management_support' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/session_management.rb:130:in process'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/base.rb:389:in process' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:149:in handle_request'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:107:in dispatch' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:104:in synchronize'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:104:in dispatch' /usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:120:in dispatch_cgi'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.1.2/lib/action_controller/dispatcher.rb:35:in dispatch' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/request_handler.rb:38:in process_request'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_request_handler.rb:163:in main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:307:in start_request_handler'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:276:in handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:274:in handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:165:in safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb:163:in safe_fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:273:in handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in send'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in start_synchronously'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:135:in start' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in start' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb:177:in start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:270:in handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:263:in synchronize'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:263:in handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in send'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in start_synchronously'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:135:in start' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in fork'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:112:in start' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/framework_spawner.rb:87:in start'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:218:in spawn_rails_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in synchronize'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:213:in spawn_rails_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:122:in spawn_application'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb:247:in handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in send'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:317:in main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb:168:in start_synchronously'
/usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/bin/passenger-spawn-server:46

Request

Parameters:

{"user"=>{"password"=>"alamaasa",
"email"=>"api06_deejay1"},
"commit"=>"Login",
"referer"=>""}

Show session dump

:location:
:user: 18
flash: !map:ActionController::Flash::FlashHash {}

Response

Headers:

{"Status"=>"200 OK",
"X-Powered-By"=>"Phusion Passenger (mod_rails/mod_rack) 2.0.3",
"cookie"=>[],
"Cache-Control"=>"no-cache"}