運行rake數據庫時未初始化的常量ActionController：migrate

Question

讓我先說這個，說我是一個總軌道noob。

我剛剛寫了一個遷移，但是當我嘗試運行rake db:migrate --trace時，出現此錯誤。

(in /home/dkerschner/hsp-agent) 
** Invoke db:migrate (first_time) 
** Invoke environment (first_time) 
** Execute environment 

rake aborted! 
uninitialized constant ActionController 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:443:in `load_missing_constant' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in `const_missing' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:92:in `const_missing' 
/var/lib/gems/1.8/gems/devise-0.9.1/lib/devise/rails/routes.rb:1 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/var/lib/gems/1.8/gems/devise-0.9.1/lib/devise/rails.rb:1 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/var/lib/gems/1.8/gems/devise-0.9.1/lib/devise.rb:229 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require' 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:36:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/home/dkerschner/hsp-agent/config/environment.rb:9 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' 
/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in' 
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require' 
/var/lib/gems/1.8/gems/rails-2.3.5/lib/tasks/misc.rake:4 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain' 
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequisites' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `each' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequisites' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_call_chain' 
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' 
/var/lib/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run' 
/var/lib/gems/1.8/gems/rake-0.8.7/bin/rake:31 
/var/lib/gems/1.8/bin/rake:19:in `load' 
/var/lib/gems/1.8/bin/rake:19 

我試圖用devise這也正是t.authenticatable來自 這裏是我的移民被命名爲20100129183653_change_agent_staff.rb

class ChangeAgentStaff < ActiveRecord::Migration 
    def self.up 
    change_table :agent_staff do |t| 
     t.authenticatable 
     t.timestamps 
    end 
    end 

    def self.down 

    end 
end 

這是推動我瘋了！我究竟做錯了什麼？

Answer 1

我試圖在早期重新創建，並且這不是您的遷移問題。問題在別處，你可能想看看你是否可以導致應用程序在其他地方出錯。啓動腳本/服務器並查看是否可以查看這些頁面，或者是否生成錯誤。

你的應用程序有多遠？如果它相當新（你知道你有一個有效的rails 2.3.5安裝），你可能想嘗試從頭開始。設置身份驗證，隨時記錄您的命令。然後發佈您輸入的所有命令和代碼，直到故障點，我們將能夠更好地診斷問題。

我在問這個問題，因爲當我試圖複製時，有太多不同的方法來設置它 - 使用設備生成器，或者手動設置，並且從開始使用設計，用戶模型已經創建。

編輯：目前在change_table中沒有可用於設計的t.authenticable。你必須手動添加它引用的列。