無法在Heroku上創建管理員用戶

我是Rails新手，我已經通過Lynda.com上的Kevin Skoglund的Ruby on Rails 3基本培訓課程。通過這個課程，你建立了一個簡單的CMS，我做了。它不包括Git或部署，但我已將我的簡單cms推送到github（https://github.com/nick5a1/Simple_CMS）並部署到Heroku（http://nkarrasch.herokuapp.com/）。無法在Heroku上創建管理員用戶

爲了部署到Heroku，我按照Heroku設置指南（https://devcenter.heroku.com/articles/rails3）將數據庫從MySQL切換到PostgreSQL。按照指示，我在gemfile中將gen'mysql2'更改爲生成'sqlite3'，並在推送之前運行軟件包安裝。然後我跑heroku run rake db:migrate。

我遇到了2個問題。當我嘗試登錄（http://nkarrasch.herokuapp.com/access）時，出現錯誤「我們很抱歉，但出錯了」。相反，我應該使用無效的用戶名/密碼組合來獲取閃光消息。這就是我在我的本地機器上測試環境中得到的結果。

其次，當我登錄到Heroku的控制檯創建，並創建一個管理員用戶，當我試圖保存用戶我得到以下錯誤：

irb(main):004:0> user.save 
    (1.2ms) BEGIN 
    AdminUser Exists (1.9ms) SELECT 1 AS one FROM "admin_users" WHERE "admin_users"."username" = 'Nick5a1' LIMIT 1 
    (1.7ms) ROLLBACK 
=> false

如何解決將大大有什麼建議讚賞:)。

非常感謝，尼克

編輯：這是我的Heroku的日誌：

2012-06-27T20:36:44+00:00 heroku[slugc]: Slug compilation started 
2012-06-27T20:37:34+00:00 heroku[api]: Add shared-database:5mb add-on by * 
2012-06-27T20:37:34+00:00 heroku[api]: Release v2 created by * 
2012-06-27T20:37:34+00:00 heroku[api]: Add RAILS_ENV, LANG, PATH, RACK_ENV, GEM_PATH config by * 
2012-06-27T20:37:34+00:00 heroku[api]: Release v3 created by * 
2012-06-27T20:37:34+00:00 heroku[api]: Release v4 created by * 
2012-06-27T20:37:34+00:00 heroku[api]: Deploy 1d82839 by * 
2012-06-27T20:37:35+00:00 heroku[slugc]: Slug compilation finished 
2012-06-27T20:37:36+00:00 heroku[web.1]: Starting process with command `bundle exec rails server -p 45450` 
2012-06-27T20:37:40+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5) 
2012-06-27T20:37:40+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5) 
2012-06-27T20:37:40+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5) 
2012-06-27T20:37:44+00:00 app[web.1]: => Rails 3.2.6 application starting in production on http://0.0.0.0:45450 
2012-06-27T20:37:44+00:00 app[web.1]: => Call with -d to detach 
2012-06-27T20:37:44+00:00 app[web.1]: => Booting WEBrick 
2012-06-27T20:37:44+00:00 app[web.1]: Connecting to database specified by DATABASE_URL 
2012-06-27T20:37:44+00:00 app[web.1]: => Ctrl-C to shutdown server 
2012-06-27T20:37:44+00:00 app[web.1]: [2012-06-27 20:37:44] INFO WEBrick 1.3.1 
2012-06-27T20:37:44+00:00 app[web.1]: [2012-06-27 20:37:44] INFO ruby 1.9.2 (2011-07-09) [x86_64-linux] 
2012-06-27T20:37:44+00:00 app[web.1]: [2012-06-27 20:37:44] INFO WEBrick::HTTPServer#start: pid=2 port=45450 
2012-06-27T20:37:45+00:00 heroku[web.1]: State changed from starting to up 
2012-06-27T20:39:44+00:00 heroku[run.1]: Awaiting client 
2012-06-27T20:39:44+00:00 heroku[run.1]: Starting process with command `bundle exec rake db:migrate` 
2012-06-27T20:39:44+00:00 heroku[run.1]: State changed from starting to up 
2012-06-27T20:39:51+00:00 heroku[run.1]: Process exited with status 0 
2012-06-27T20:39:51+00:00 heroku[run.1]: State changed from up to complete 
2012-06-27T20:41:05+00:00 heroku[run.1]: Awaiting client 
2012-06-27T20:41:05+00:00 heroku[run.1]: Starting process with command `bundle exec rails console` 
2012-06-27T20:41:05+00:00 heroku[run.1]: State changed from starting to up 
2012-06-27T20:46:09+00:00 heroku[run.1]: Process exited with status 0 
2012-06-27T20:46:09+00:00 heroku[run.1]: State changed from up to complete

來源

2012-06-27 Nick5a1

確保在控制檯運行'Heroku的logs'看到錯誤報告，您訪問得到你的應用。通常會有足夠的細節來指出你的問題。 – John

@John是對的，請提供'heroku日誌'。還要確保你有'heroku運行耙db：migrate' ... – gabrielhilal

謝謝約翰，我已經添加了我的日誌。他們似乎沒有任何明顯的跡象？ – Nick5a1

您正在申報兩個不同的數據庫...嘗試從Gemfile刪除這兩條線：

gem 'pg' 
gem 'mysql2'

並加入以下內容：

group :production do 
    gem 'pg' 
    gem 'thin' 
end 

group :development, :test do 
    gem 'mysql2' 
end

通過這種方式，您可以定義一個用於開發的數據庫（mysql）和另一個用於生產的數據庫（pg）。

改變的Gemfile後：

git add . 
git commit -m "gemfile updated" 
git push 
git push heroku master 
heroku run rake db:migrate

編輯 - 看着你routes.rb我意識到你正在使用的match ':controller(/:action(/:id))(.:format)'，這將使可通過get要求自己的行爲。但是，我從來沒有使用過它，我認爲你的路線可能有問題。

JAST以確保它指向access/attempt_login，你可以請包括所產生的路線：

rake routes

來源

2012-06-27 21:11:56 gabrielhilal

謝謝 - 這對於不同的開發和生產數據庫是有意義的。不幸的是，我在完成上述操作後仍然遇到同樣的錯誤。我也在github上做了更新。 – Nick5a1

請給我們一個更新的'heroku日誌' – gabrielhilal

無法在Heroku上創建管理員用戶

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