I've got a search form that was working on rails 1.2.6, but since upgrading to 2.0.2, I'm getting this error when I post my form. Here's the full error:
Processing SearchController#results (for 24.173.26.226 at 2008-01-24 14:51:23) [GET] Session ID: BAh7CDoTc2hvd1RodW1ibmFpbHMiBjE6CXVzZXJvOglVc2VyBzoWQGF0dHJp%0AYnV0ZXNfY2FjaGV7ADoQQGF0dHJpYnV0ZXN7DCIJbmFtZSITRG91ZyBKb2hu%0Ac3RvbmUiDWNhdGVnb3J5Ig5zdXBlcnVzZXIiB2lkIgYyIg1wYXNzd29yZCIN%0AcEBzc3dvcmQiCmVtYWlsIiNkam9obnN0b25lQHByb3ZpbmNldG93bi1tYS5n%0Ab3YiC2FjdGl2ZSIGMSIPY3JlYXRlZF9hdCIYMjAwOC0wMS0yMyAxMzozNToz%0AOCIKZmxhc2hJQzonQWN0aW9uQ29udHJvbGxlcjo6Rmxhc2g6OkZsYXNoSGFz%0AaHsABjoKQHVzZWR7AA%3D%3D--ec73422aae883d2a819f7c304ecc59ed347e3337 Parameters: {"format"=>{"6"=>"1"}, "collection"=>{"5"=>"1"}, "search"=>{"form"=>"advancedsearch", "keyword"=>"oil"}, "x"=>"17", "y"=>"13", "action"=>"results", "controller"=>"search"}
NoMethodError (undefined method `to_sym' for {"6"=>"1"}:HashWithIndifferentAccess): /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:420:in `template_format' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:396:in `pick_template_extension' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1259:in `template_exempt_from_layout?' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/layout.rb:278:in `apply_layout?' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/layout.rb:256:in `render_without_benchmark' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:51:in `render' /usr/lib/ruby/1.8/benchmark.rb:293:in `measure' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:51:in `render' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1153:in `default_render' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1159:in `perform_action_without_filters' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in `call_filters' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:689:in `perform_action_without_benchmark' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue' /usr/lib/ruby/1.8/benchmark.rb:293:in `measure' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/rescue.rb:199:in `perform_action_without_caching' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:678:in `perform_action' /usr/lib64/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache' /usr/lib64/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/query_cache.rb:8:in `cache' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:677:in `perform_action' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in `send' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in `process_without_filters' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:685:in `process_without_session_management_support' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/session_management.rb:123:in `process' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:388:in `process' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:171:in `handle_request' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in `dispatch' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in `dispatch_cgi' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in `dispatch' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel/rails.rb:76:in `process' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel/rails.rb:74:in `synchronize' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel/rails.rb:74:in `process' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:159:in `process_client' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:158:in `each' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:158:in `process_client' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:285:in `run' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:285:in `initialize' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:285:in `new' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:285:in `run' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:268:in `initialize' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:268:in `new' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel.rb:268:in `run' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel/configurator.rb:282:in `run' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel/configurator.rb:281:in `each' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel/configurator.rb:281:in `run' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/mongrel_rails:128:in `run' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/../lib/mongrel/command.rb:212:in `run' /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.3/bin/mongrel_rails:281 /usr/bin/mongrel_rails:19:in `load' /usr/bin/mongrel_rails:19