Warum wird mein Entwicklungsserver nicht geladen? default_controller_and_action ': missing: action (ArgumentError)

Question

Ich bin ein Ruby Nuby (und neu zu Stack Overflow) arbeitet an der Rails Tutorial by Michael Hartl und plötzlich mein Entwicklungsserver won't load and keeps exiting. Die Konsole wird auch nicht geladen und Rspec spec/erzeugt Fehler/Ausnahmen. Ich schließe einige Ausgaben vom Terminal ein, Ihre Hilfe wird sehr geschätzt.

Exiting 
/Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/mapper.rb:164:in `default_controller_and_action': missing :action (ArgumentError) 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/mapper.rb:68:in `normalize_options!' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/mapper.rb:51:in `initialize' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/mapper.rb:261:in `new' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/mapper.rb:261:in `match' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/mapper.rb:1112:in `match' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/mapper.rb:1297:in `match' 
    from /Users/ameedachowdhury/rails_projects/railstutorial/config/routes.rb:11:in `block in <top (required)>' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:233:in `instance_exec' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:233:in `draw' 
    from /Users/ameedachowdhury/rails_projects/railstutorial/config/routes.rb:1:in `<top (required)>' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:235:in `load' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:235:in `block in load' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:225:in `block in load_dependency' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:596:in `new_constants_in' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:225:in `load_dependency' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:235:in `load' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application.rb:127:in `block in reload_routes!' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application.rb:127:in `each' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application.rb:127:in `reload_routes!' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application.rb:120:in `block in routes_reloader' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/file_update_checker.rb:32:in `call' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/activesupport-3.0.3/lib/active_support/file_update_checker.rb:32:in `execute_if_updated' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application/finisher.rb:51:in `block (2 levels) in <module:Finisher>' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application/finisher.rb:52:in `call' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application/finisher.rb:52:in `block in <module:Finisher>' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `instance_exec' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `run' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/initializable.rb:50:in `block in run_initializers' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `each' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `run_initializers' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application.rb:134:in `initialize!' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/application.rb:77:in `method_missing' 
    from /Users/ameedachowdhury/rails_projects/railstutorial/config/environment.rb:5:in `<top (required)>' 
    from /Users/ameedachowdhury/rails_projects/railstutorial/config.ru:3:in `require' 
    from /Users/ameedachowdhury/rails_projects/railstutorial/config.ru:3:in `block in <main>' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize' 
    from /Users/ameedachowdhury/rails_projects/railstutorial/config.ru:1:in `new' 
    from /Users/ameedachowdhury/rails_projects/railstutorial/config.ru:1:in `<main>' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/rack-1.2.1/lib/rack/builder.rb:35:in `eval' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/rack-1.2.1/lib/rack/builder.rb:35:in `parse_file' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/rack-1.2.1/lib/rack/server.rb:162:in `app' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/rack-1.2.1/lib/rack/server.rb:248:in `wrapped_app' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/rack-1.2.1/lib/rack/server.rb:213:in `start' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/commands/server.rb:65:in `start' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/commands.rb:30:in `block in <top (required)>' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/commands.rb:27:in `tap' 
    from /Users/ameedachowdhury/.rvm/gems/ruby-1.9.2-p0@rails3tutorial/gems/railties-3.0.3/lib/rails/commands.rb:27:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>' 
ameeda-chowdhurys-macbook:railstutorial ameedachowdhury$ 

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Answer 1

Als ich in dieses Problem lief, es war, weil eine der Routen in routes.rb einen Slash hatte (/) anstelle des Hash (#), wenn die controller#action Syntax (I verwendet „Controller/Aktion ", die falsch war).

Zum Beispiel hatte ich versehentlich root :to => 'home/index'. Es sollte root :to => 'home#index' sein.

Ich fand diese Lösung in here.

Answer 2

In meinem Fall wurde es durch das Suffix Schrägstrich '/' in einigen meiner Routen verursacht. Z.B.

post 'load_query/' 

Nachdem dieses Suffix

Entfernen

post 'load_query' 

es funktionierte.

Answer 3

Dies wird durch falsche Routen verursacht -
Bitte überprüfen Sie Ihre config/routes.rb, auch wenn eine Route erwähnt falsch ist dann wird dieser Fehler ausgelöst !!
Stellen Sie außerdem sicher, dass die Route

'/url/for/something' => 'controller#action' 

oder

root :to => 'controller#action 

Answer 4

Ich bin auch ein Ruby-Nuby und hatte den gleichen Fehler ist, während auf den Rails-Tutorial von Michael Hartl arbeiten. Wenn Sie wie ich sind, geben Sie vielleicht den gesamten Code ein, der im Buch erscheint, und lesen oder verstehen den Text wirklich. Nicht alles ist Schritt für Schritt. In zeigt Kamel Fall vs. Schlange Fall Hartl zeigt eine Box mit dem folgenden Code

$ rails generate controller static_pages ... 

Hier Hartl einfach ein StaticPages Controller Schlange Fall zu erzeugen versucht, Anweisungen, um den Kontrast, anstatt Kamel Fall, der in Geographie Listing 3.4. Die Punkte "..." dienen lediglich dazu, die restlichen Anweisungen für die cmd-Zeile zu bearbeiten oder zu kürzen. Ich tippte genau an das, was gezeigt und Liquidation mit den folgenden in meiner Routen-Datei:

SampleApp::Application.routes.draw do 
get "static_pages/..." 

get "static_pages/home" 

get "static_pages/help" 

öffnen Sie Ihre Routen-Datei löschen

get "static_pages/..." 

die Routen-Datei speichern, und versuchen Sie es erneut starten Schienen Server .

Ich habe auch zerstört "Schienen erzeugen Controller static_pages ..." Nicht sicher, ob das irgendeine Wirkung hatte, aber jetzt funktioniert alles.

Answer 5

standardmäßig Sie diese:

Rails.application.routes.draw do 
    get 'static_pages/...' 

    get 'static_pages/home' 

    get 'static_pages/help' 

gerade diese ERASE:

get 'static_pages/...' 

UND SIE WERDEN DIESE IN DER routes.rb FILE

Rails.application.routes.draw do 

    get 'static_pages/home' 

    get 'static_pages/help' 

Answer 6

Änderung Ihrer Standard-Root-HAVE in der Datei routes.rb.

get "static_pages#home" TO root to: 'static_pages#home' 

Ich habe das gleiche Problem durchlaufen, und die obige Änderung funktionierte für mich.