Rails中的ArgumentError :: WelcomeController＃index

我是Ruby on Rails中的新手。在創建新的應用程序，並開始http://localhost:3000/我收到以下錯誤：Rails中的ArgumentError :: WelcomeController＃index

wrong number of arguments(1 for 0) 

Full trace is as follows: 

actionpack (4.0.0) lib/abstract_controller/base.rb:89:in `initialize' 
actionpack (4.0.0) lib/abstract_controller/base.rb:89:in `new' 
actionpack (4.0.0) lib/abstract_controller/base.rb:89:in `action_methods' 
actionpack (4.0.0) lib/action_controller/metal/hide_actions.rb:36:in `action_methods' 
actionpack (4.0.0) lib/abstract_controller/url_for.rb:25:in `action_methods' 
actionpack (4.0.0) lib/abstract_controller/base.rb:179:in `action_method?' 
actionpack (4.0.0) lib/abstract_controller/base.rb:230:in `method_for_action' 
actionpack (4.0.0) lib/action_controller/metal/hide_actions.rb:17:in `method_for_action' 
actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:14:in `method_for_action' 
actionpack (4.0.0) lib/abstract_controller/base.rb:130:in `process' 
actionpack (4.0.0) lib/abstract_controller/rendering.rb:44:in `process' 
actionpack (4.0.0) lib/action_controller/metal.rb:195:in `dispatch' 
actionpack (4.0.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch' 
actionpack (4.0.0) lib/action_controller/metal.rb:231:in `block in action' 
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:in `call' 
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:in `dispatch' 
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:48:in `call' 
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:71:in `block in call' 
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in `each' 
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in `call' 
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in `call' 
rack (1.5.2) lib/rack/etag.rb:23:in `call' 
rack (1.5.2) lib/rack/conditionalget.rb:25:in `call' 
rack (1.5.2) lib/rack/head.rb:11:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/flash.rb:241:in `call' 
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context' 
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:in `call' 
activerecord (4.0.0) lib/active_record/query_cache.rb:36:in `call' 
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call' 
activerecord (4.0.0) lib/active_record/migration.rb:369:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' 
activesupport (4.0.0) lib/active_support/callbacks.rb:373:in `_run__170541183__call__callbacks' 
activesupport (4.0.0) lib/active_support/callbacks.rb:80:in `run_callbacks' 
actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/reloader.rb:64:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/remote_ip.rb:76:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' 
railties (4.0.0) lib/rails/rack/logger.rb:38:in `call_app' 
railties (4.0.0) lib/rails/rack/logger.rb:21:in `block in call' 
activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `block in tagged' 
activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:in `tagged' 
activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `tagged' 
railties (4.0.0) lib/rails/rack/logger.rb:21:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in `call' 
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call' 
rack (1.5.2) lib/rack/runtime.rb:17:in `call' 
activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in `call' 
rack (1.5.2) lib/rack/lock.rb:17:in `call' 
actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in `call' 
railties (4.0.0) lib/rails/engine.rb:511:in `call' 
railties (4.0.0) lib/rails/application.rb:97:in `call' 
rack (1.5.2) lib/rack/lock.rb:17:in `call' 
rack (1.5.2) lib/rack/content_length.rb:14:in `call' 
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service' 
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service' 
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run' 
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'

誰能幫我解決？

編輯：

我welcome_controller.rb包含：

class WelcomeController < ApplicationController 
    def index 
    end 
end

我的routes.rb包含：

Railsgirls::Application.routes.draw do 
    get "welcome/index" 
end

來源

2013-10-27 Shardul

運作的，你可以發佈您的歡迎控制器'指數行動，也是錯誤意味着你在某處提供了一個參數，並且它沒有任何參數，因此（ 1爲0）參數錯誤 – David

這是你的紅寶石和rails版本..你可以只發布你的寶石文件 –

試試這個裏面路線，而不是get：

root to: 'welcome#index'

來源

2013-10-27 21:38:24

我試過這個。似乎沒有工作。在編輯routes.rb之後，我需要執行任何其他步驟嗎？ – Shardul

你會得到同樣的錯誤嗎？如果錯誤是一樣的，你得到它自創建你的應用程序或它開始發生後，你添加了一些代碼？嘗試創建一個新的Rails應用程序，並嘗試啓動它，而不添加任何自定義代碼 - 它仍然會拋出一個錯誤？此外，爲什麼你使用這個舊版本的新項目？ –

在你的路由使用

get "welcome#index"

否則你聲明命名空間。

使用

rake routes

，看看你的路由是如何宣稱

來源

2013-10-27 21:38:48 jewilmeer

考慮到他打開localhost：3000，他可能需要root方法而不是get方法。 –

是真的，但當時只有一步 – jewilmeer

我也試過這個。似乎沒有工作。和'rake routes'返回：前綴動詞URI模式控制器＃動作 root GET/welcome＃index – Shardul

看來你使用ruby 1.9.1與rails 4.0.0但rails 4只有ruby 1.9.3+ http://rubyonrails.org/download

來源

2013-10-27 21:38:51 freemanoid

Rails中的ArgumentError :: WelcomeController＃index

回答

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