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我正在關注如何使用jruby和登錄系統創建在線應用程序的webtutorial。我對jruby很陌生，如果我遺漏了任何重要信息，我很抱歉。未定義的方法demodulize爲零：NilClass在AuthLogic應用程序
我有一個username模型和user_login模型，我認爲是正確的。我收到的錯誤是當我嘗試創建新的user_login會話。從本質上講，我可以註冊一個用戶，但一旦我user_login控制器調用@user_login = UserLogin.new，系統崩潰了以下消息：
undefined method `demodulize' for nil:NilClass Rails.root: /home/eoin/programming/year/website Application Trace | Framework Trace | Full Trace authlogic (3.3.0) lib/authlogic/session/klass.rb:52:in `initialize' authlogic (3.3.0) lib/authlogic/session/scopes.rb:79:in `initialize' app/controllers/user_logins_controller.rb:6:in `new' org/jruby/RubyBasicObject.java:1659:in `__send__' org/jruby/RubyKernel.java:2086:in `send' actionpack (3.2.13) lib/action_controller/metal/implicit_render.rb:4:in `send_action' actionpack (3.2.13) lib/abstract_controller/base.rb:167:in `process_action' ...
我的控制器類看起來是這樣的：
class UserLoginsController < ApplicationController
# GET /user_logins/new
# GET /user_logins/new.json
def new
@user_login = UserLogin.new
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @user_login }
end
end
# POST /user_logins
# POST /user_logins.json
def create
@user_login = UserLogin.new(params[:user_login])
respond_to do |format|
if @user_login.save
format.html { redirect_to(:usernames, :notice => 'Login Successful') }
format.xml { render :xml => @user_login, :status => :created, :location => @user_login }
else
format.html { render action: "new" }
format.json { render json: @user_login.errors, status: :unprocessable_entity }
end
end
end
# DELETE /user_logins/1
# DELETE /user_logins/1.json
def destroy
@user_login = UserLogin.find
@user_login.destroy
respond_to do |format|
format.html { redirect_to(:usernames, :notice => 'Goodbye!') }
format.json { head :ok }
end
end
end
我執行程序在Ubuntu上，不知道該怎麼做。這個問題在網上似乎沒有幫助。任何有關如何解決這個問題的建議都會非常困難。 感謝
哦，這裏是我的gemlock文件中看到我已經安裝了哪些寶石。
remote: http://rubygems.org/
specs:
actionmailer (3.2.13)
actionpack (= 3.2.13)
mail (~> 2.5.3)
actionpack (3.2.13)
activemodel (= 3.2.13)
activesupport (= 3.2.13)
builder (~> 3.0.0)
erubis (~> 2.7.0)
journey (~> 1.0.4)
rack (~> 1.4.5)
rack-cache (~> 1.2)
rack-test (~> 0.6.1)
sprockets (~> 2.2.1)
activemodel (3.2.13)
activesupport (= 3.2.13)
builder (~> 3.0.0)
activerecord (3.2.13)
activemodel (= 3.2.13)
activesupport (= 3.2.13)
arel (~> 3.0.2)
tzinfo (~> 0.3.29)
activerecord-jdbc-adapter (1.2.9)
activerecord-jdbcsqlite3-adapter (1.2.9)
activerecord-jdbc-adapter (~> 1.2.9)
jdbc-sqlite3 (~> 3.7.2)
activeresource (3.2.13)
activemodel (= 3.2.13)
activesupport (= 3.2.13)
activesupport (3.2.13)
i18n (= 0.6.1)
multi_json (~> 1.0)
arel (3.0.2)
authlogic (3.3.0)
activerecord (>= 3.2)
activesupport (>= 2.3)
bouncy-castle-java (1.5.0147)
builder (3.0.4)
coffee-rails (3.2.2)
coffee-script (>= 2.2.0)
railties (~> 3.2.0)
coffee-script (2.2.0)
coffee-script-source
execjs
coffee-script-source (1.6.2)
erubis (2.7.0)
execjs (1.4.0)
multi_json (~> 1.0)
hike (1.2.2)
i18n (0.6.1)
jdbc-sqlite3 (3.7.2.1)
journey (1.0.4)
jquery-rails (3.0.0)
railties (>= 3.0, < 5.0)
thor (>= 0.14, < 2.0)
jruby-openssl (0.8.8)
bouncy-castle-java (>= 1.5.0147)
json (1.8.0)
json (1.8.0-java)
mail (2.5.4)
mime-types (~> 1.16)
treetop (~> 1.4.8)
mime-types (1.23)
multi_json (1.7.4)
polyglot (0.3.3)
rack (1.4.5)
rack-cache (1.2)
rack (>= 0.4)
rack-ssl (1.3.3)
rack
rack-test (0.6.2)
rack (>= 1.0)
rails (3.2.13)
actionmailer (= 3.2.13)
actionpack (= 3.2.13)
activerecord (= 3.2.13)
activeresource (= 3.2.13)
activesupport (= 3.2.13)
bundler (~> 1.0)
railties (= 3.2.13)
railties (3.2.13)
actionpack (= 3.2.13)
activesupport (= 3.2.13)
rack-ssl (~> 1.3.2)
rake (>= 0.8.7)
rdoc (~> 3.4)
thor (>= 0.14.6, < 2.0)
rake (10.0.4)
rdoc (3.12.2)
json (~> 1.4)
sass (3.2.9)
sass-rails (3.2.6)
railties (~> 3.2.0)
sass (>= 3.1.10)
tilt (~> 1.3)
sprockets (2.2.2)
hike (~> 1.2)
multi_json (~> 1.0)
rack (~> 1.0)
tilt (~> 1.1, != 1.3.0)
sqlite3 (1.3.7)
thor (0.18.1)
tilt (1.4.1)
treetop (1.4.12)
polyglot
polyglot (>= 0.3.1)
tzinfo (0.3.37)
uglifier (2.1.1)
execjs (>= 0.3.0)
multi_json (~> 1.0, >= 1.0.2)
請問，我會提出任何額外的代碼。