我正尝试在CentOS 6.2上安装RedMine，但是当我尝试访问这个网站时，我遇到了困难。 使用本指南 ，我在environment.rbconfiguration了以下内容：
# Load the rails application require File.expand_path('../application', __FILE__) # Make sure there's no plugin in vendor/plugin before starting vendor_plugins_dir = File.join(Rails.root, "vendor", "plugins") if Dir.glob(File.join(vendor_plugins_dir, "*")).any? $stderr.puts "Plugins in vendor/plugins (#{vendor_plugins_dir}) are no longer allowed. " + "Please, put your Redmine plugins in the `plugins` directory at the root of your " + "Redmine directory (#{File.join(Rails.root, "plugins")})" exit 1 end ENV['RAILS_ENV'] ||= 'production' #RAILS_ENV=production bundle exec rake generate_session_store RAILS_ENV=production bundle exec rake db:migrate # Initialize the rails application RedmineApp::Application.initialize!
不幸的是，我不断遇到以下错误：
undefined method 'db' for main:Object
当我尝试手动运行命令时遇到同样的问题：
[root@nag0 config]# rake db:migrate --trace (in /var/www/html/redmine-2.2.2) ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment rake aborted! undefined method `db' for main:Object /var/www/html/redmine-2.2.2/config/environment.rb:16 /usr/lib64/ruby/gems/1.8/gems/railties-3.2.11/lib/rails/application.rb:103:in `require' /usr/lib64/ruby/gems/1.8/gems/railties-3.2.11/lib/rails/application.rb:103:in `require_environment!' /usr/lib64/ruby/gems/1.8/gems/railties-3.2.11/lib/rails/application.rb:297:in `initialize_tasks' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:228:in `call' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:228:in `execute' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:223:in `each' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:223:in `execute' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:166:in `invoke_with_call_chain' /usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:187:in `invoke_prerequisites' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:185:in `each' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:185:in `invoke_prerequisites' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:165:in `invoke_with_call_chain' /usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:152:in `invoke' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:143:in `invoke_task' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:101:in `top_level' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:101:in `each' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:101:in `top_level' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:110:in `run_with_threads' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:95:in `top_level' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:73:in `run' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:70:in `run' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.3/bin/rake:33 /usr/bin/rake:19:in `load' /usr/bin/rake:19 Tasks: TOP => db:migrate => environment
我用我的MySQL数据库login名/密码configuration了database.yml文件。
鉴于我是一般的Ruby新手，我确信我做错了什么，但不幸的是，我不太了解Ruby如何进一步排除故障。
任何build议总是赞赏。
你能确认你已经configuration了config/database.yml而不是config/db.yml吗？ 如果没有，你已经错误地命名了你的数据库configuration文件。
你也误读了指南。 在“ 生成会话存储 ”部分的下面列出了要执行的命令 – 不包含environment.rb 。
删除线
#RAILS_ENV=production bundle exec rake generate_session_store RAILS_ENV=production bundle exec rake db:migrate
从你的environment.rb ，通过在命令行中生成会话存储库中的命令来执行指南。