неинициализированная константа ActiveModel :: Observing (NameError)

Question

Я разработал веб-приложение с использованием рубинов на рельсах. Я обновил версию rails с 3.2 до 4.0, и при запуске моего сервера появляется ошибка ниже.

Ошибка:

/home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/dynamoid-0.6.1.1/lib/dynamoid /config.rb:11:in <module:Config>': uninitialized constant ActiveModel::Observing (NameError) from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/dynamoid-0.6.1.1/lib/dynamoid/config.rb:8:in ' из /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/dynamoid-0.6.1.1/lib/dynamoid/config .rb: 5: in <top (required)>' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/1.9.1/rubygems/custom_require.rb:36:in require ' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/1.9.1/rubygems/custom_require.rb:36:in require' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/dynamoid-0.6.1.1/lib/dynamoid.rb:21:in' от /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/runtime.rb:76:in require' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/runtime.rb:76:in блок (2 уровня) in require ' из /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/runtime.rb:74:in each' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/runtime.rb:74:in block in require ' из /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/runtime.rb:63:in each' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/runtime.rb:63:in требуется ' /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/bundler-1.3.5/lib/bundler.rb:132:in require' from /home/lakhwani/FCLaunchRequirement/src/FCLaunchRequirementWebsite/rails-root/config/application.rb:88:in' из /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/1.9.1/rubyg Эмс/custom_require.rb: 36: в require' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/1.9.1/rubygems/custom_require.rb:36:in требуется ' из /home/lakhwani/FCLaunchRequirement/src/FCLaunchRequirementWebsite/rails-root/config/environment.rb:6:in <top (required)>' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/1.9.1/rubygems/custom_require.rb:36:in требуют' из/дома/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/1.9.1/rubygems/custom_require.rb: 36: in require' from /home/lakhwani/FCLaunchRequirement/src/FCLaunchRequirementWebsite/rails-root/config.ru:3:in блок в ' из /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/ gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb: 55: in instance_eval' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:55:in Инициализировать ' из /home/lakhwani/FCLaunchRequirement/src/FCLaunchRequirementWebsite/rails-root/config.ru:in new' from /home/lakhwani/FCLaunchRequirement/src/FCLaunchRequirementWebsite/rails-root/config.ru:in ' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:49:in eval' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:49:in new_from_string ' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:40:in parse_file' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/server.rb:277:in build_app_and_options_from_config ' из /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/server.rb:199:in app' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/server.rb:314:in wrapped_app ' из /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/server.rb:250:in start' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/lib/rack/server.rb:141:in start' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/gems/1.9.1/gems/rack-1.5.2/bin/rackup:4:in <top (required)>' from /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/bin/rackup:23:in загрузить ' из/home/lakhwani/FCLaunchRequirement/окр/FCLaunchRe quirementWebsite-1.0/runtime/bin/rackup: 23: in <main>' /home/lakhwani/FCLaunchRequirement/env/BrazilRake-1.1/runtime/ruby2.1.x/lib/ruby/site_ruby/2.1.0/amazon/brazil/ruby.rb:98:in exec_build_script ': команда вышла со статусом 1 !! (RuntimeError) от /home/lakhwani/FCLaunchRequirement/env/BrazilRake-1.1/runtime/bin/brazilrake:61:in block in <main>' from /home/lakhwani/FCLaunchRequirement/env/BrazilRake-1.1/runtime/bin/brazilrake:48:in каждый» из /home/lakhwani/FCLaunchRequirement/env/BrazilRake-1.1/runtime/bin/brazilrake : 48: in `'

Может ли кто-нибудь помочь мне решить эту проблему?

Answer 1

Как вы обновили проект рельсов, чтобы использовать рельсы 4? Для рельсов 4.2 и ниже, если вы хотите обновить его, просто добавьте версию рельсов, которую вы хотите в Gemfile приложения, и запустите rails app:update. Следуйте here.