gistfile1.sh

NoMethodError (You have a nil object when you didn't expect it!
The error occurred while evaluating nil.vat_rate):
    /app/models/line_item.rb:49:in `set_vat'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:178:in `send'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:178:in `evaluate_method'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:166:in `call'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:93:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:92:in `each'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:92:in `send'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:92:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/callbacks.rb:277:in `run_callbacks'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/callbacks.rb:315:in `callback'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/callbacks.rb:221:in `create_or_update'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:2383:in `save_without_validation'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/validations.rb:1009:in `save_without_dirty'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/dirty.rb:79:in `save_without_transactions'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:179:in `send'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:179:in `with_transaction_returning_status'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/connection_adapters/abstract/database_statements.rb:66:in `transaction'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:129:in `transaction'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:138:in `transaction'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:178:in `with_transaction_returning_status'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:146:in `save'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:158:in `rollback_active_record_state!'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:146:in `save'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/associations/association_collection.rb:237:in `create'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/associations/association_collection.rb:405:in `create_record'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/associations/association_collection.rb:423:in `add_record_to_target_with_callbacks'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/associations/association_collection.rb:405:in `create_record'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/associations/association_collection.rb:235:in `create'
    /app/models/order.rb:87:in `add_line_item'
    /app/controllers/cart_controller.rb:23:in `add_to_cart'
    /app/controllers/cart_controller.rb:34:in `buy_now'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:1253:in `send'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:1253:in `perform_action_without_filters'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/filters.rb:617:in `call_filters'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/filters.rb:610:in `perform_action_without_benchmark'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
    /opt/local/lib/ruby/1.8/benchmark.rb:293:in `measure'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/rescue.rb:136:in `perform_action_without_caching'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/caching/sql_cache.rb:13:in `perform_action'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache'
    /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/query_cache.rb:8:in `cache'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/caching/sql_cache.rb:12:in `perform_action'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:524:in `send'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:524:in `process_without_filters'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/filters.rb:606:in `process_without_session_management_support'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/session_management.rb:134:in `sass_old_process'
    /opt/local/lib/ruby/gems/1.8/gems/haml-2.0.9/rails/../lib/sass/plugin/rails.rb:19:in `process'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:392:in `process'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:183:in `handle_request'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:110:in `dispatch_unlocked'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:123:in `dispatch'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:122:in `synchronize'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:122:in `dispatch'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:132:in `dispatch_cgi'
    /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:39:in `dispatch'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:76:in `process'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:74:in `synchronize'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:74:in `process'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:159:in `process_client'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `each'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `process_client'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `initialize'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `new'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `initialize'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `new'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:282:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:281:in `each'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:281:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/command.rb:212:in `run'
    /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:142:in `load_without_new_constant_marking'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:142:in `load'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:142:in `load'
    /opt/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/servers/mongrel.rb:64
    /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
    /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
    /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
    /opt/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/server.rb:49
    /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
    /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
    script/server:3

Rendered /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/templates/rescues/_trace (141.2ms)
Rendered /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/templates/rescues/_request_and_response (1.4ms)
Rendering /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/templates/rescues/layout.erb (internal_server_error)