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我覺得我搞砸了大時間的東西。我很長一段時間使用這個命令rails new app --database=postgresql，我是一個快樂的男孩。但是今天我忘了生成一個應用程序來使用postgresql。現在每個我跑rails new app --database=postgresql，去http://localhost:3000/時間，不然我和localhost：3000 500內部服務器錯誤
500內部服務器錯誤迎接如果您是這個 網站的管理員，那麼請閱讀此Web應用程序的日誌文件和/或 Web服務器日誌文件來找出哪裏出了問題。
我檢查了日誌，我有這樣的事情：
Started GET "/" for ::1 at 2015-06-18 23:11:56 +0200
ActiveRecord::NoDatabaseError (FATAL: database "toy_development" does not exist
):
activerecord (4.2.1) lib/active_record/connection_adapters/postgresql_adapter.rb:661:in `rescue in connect'
activerecord (4.2.1) lib/active_record/connection_adapters/postgresql_adapter.rb:651:in `connect'
activerecord (4.2.1) lib/active_record/connection_adapters/postgresql_adapter.rb:242:in `initialize'
activerecord (4.2.1) lib/active_record/connection_adapters/postgresql_adapter.rb:44:in `new'
activerecord (4.2.1) lib/active_record/connection_adapters/postgresql_adapter.rb:44:in `postgresql_connection'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:438:in `new_connection'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:448:in `checkout_new_connection'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:422:in `acquire_connection'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:349:in `block in checkout'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:348:in `checkout'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:263:in `block in connection'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:262:in `connection'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:567:in `retrieve_connection'
activerecord (4.2.1) lib/active_record/connection_handling.rb:113:in `retrieve_connection'
activerecord (4.2.1) lib/active_record/connection_handling.rb:87:in `connection'
activerecord (4.2.1) lib/active_record/migration.rb:384:in `connection'
activerecord (4.2.1) lib/active_record/migration.rb:371:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `call'
activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `_run_callbacks'
activesupport (4.2.1) lib/active_support/callbacks.rb:776:in `_run_call_callbacks'
activesupport (4.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
web-console (2.1.3) lib/web_console/middleware.rb:37:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.1) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.1) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.1) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.1) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.3) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.3) lib/rack/runtime.rb:18:in `call'
activesupport (4.2.1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.3) lib/rack/lock.rb:17:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/static.rb:113:in `call'
rack (1.6.3) lib/rack/sendfile.rb:113:in `call'
railties (4.2.1) lib/rails/engine.rb:518:in `call'
railties (4.2.1) lib/rails/application.rb:164:in `call'
rack (1.6.3) lib/rack/lock.rb:17:in `call'
rack (1.6.3) lib/rack/content_length.rb:15:in `call'
rack (1.6.3) lib/rack/handler/webrick.rb:88:in `service'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:138:in `service'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:94:in `run'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/server.rb:294:in `block in start_thread'
Rendered /Users/siaw/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (15.2ms)
所以後來我火了psql創建一個名爲toy_development數據庫。 toy是我的應用程序btw的名稱。創建該數據庫後。我再次嘗試在瀏覽器中加載localhost。然後現在我得到這個：
Started GET "/" for ::1 at 2015-06-18 23:18:17 +0200
ArgumentError (wrong number of arguments (2 for 1)):
actionpack (4.2.1) lib/action_dispatch/http/request.rb:338:in `parse_query'
rack (1.6.3) lib/rack/request.rb:191:in `GET'
actionpack (4.2.1) lib/action_dispatch/http/request.rb:300:in `GET'
actionpack (4.2.1) lib/action_dispatch/http/parameters.rb:14:in `parameters'
actionpack (4.2.1) lib/action_dispatch/http/filter_parameters.rb:37:in `filtered_parameters'
actionpack (4.2.1) lib/action_controller/metal/instrumentation.rb:22:in `process_action'
actionpack (4.2.1) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
activerecord (4.2.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.2.1) lib/abstract_controller/base.rb:137:in `process'
actionview (4.2.1) lib/action_view/rendering.rb:30:in `process'
actionpack (4.2.1) lib/action_controller/metal.rb:196:in `dispatch'
actionpack (4.2.1) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.2.1) lib/action_controller/metal.rb:237:in `block in action'
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:74:in `call'
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:43:in `serve'
actionpack (4.2.1) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.1) lib/action_dispatch/journey/router.rb:30:in `each'
actionpack (4.2.1) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:819:in `call'
rack (1.6.3) lib/rack/etag.rb:24:in `call'
rack (1.6.3) lib/rack/conditionalget.rb:25:in `call'
rack (1.6.3) lib/rack/head.rb:13:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/flash.rb:260:in `call'
rack (1.6.3) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.6.3) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/cookies.rb:560:in `call'
activerecord (4.2.1) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:649:in `call'
activerecord (4.2.1) lib/active_record/migration.rb:378:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `call'
activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `_run_callbacks'
activesupport (4.2.1) lib/active_support/callbacks.rb:776:in `_run_call_callbacks'
activesupport (4.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
web-console (2.1.3) lib/web_console/middleware.rb:37:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.1) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.1) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.1) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.1) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.3) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.3) lib/rack/runtime.rb:18:in `call'
activesupport (4.2.1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.3) lib/rack/lock.rb:17:in `call'
actionpack (4.2.1) lib/action_dispatch/middleware/static.rb:113:in `call'
rack (1.6.3) lib/rack/sendfile.rb:113:in `call'
railties (4.2.1) lib/rails/engine.rb:518:in `call'
railties (4.2.1) lib/rails/application.rb:164:in `call'
rack (1.6.3) lib/rack/lock.rb:17:in `call'
rack (1.6.3) lib/rack/content_length.rb:15:in `call'
rack (1.6.3) lib/rack/handler/webrick.rb:88:in `service'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:138:in `service'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:94:in `run'
/Users/siaw/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/server.rb:294:in `block in start_thread'
Rendered /Users/siaw/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (13.8ms)
我需要一些幫助在這裏。 :)
對於未來，'捆綁高管耙分貝：create' - HTTP：//指南。 rubyonrails.org/command_line.html#db –
可能重複[Rails'parse \ _query'服務器在全新應用程序中的錯誤]（http://stackoverflow.com/questions/30925008/rails-parse-query-error-on -server-in-brand-new-app） – max