nicht initialisierte Konstante ActiveModel :: Observing (NameError)

Question

Ich habe eine Webanwendung mit Ruby on Rails entwickelt. Ich habe meine Schienenversion von 3.2 zu 4.0 aufgerüstet, und ich bekomme den folgenden Fehler beim Starten meines Servers.

Fehler:

/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 ' von /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 ' von /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' aus /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 Block (2 Ebenen) in require ' von /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 ' von /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 require ' from /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' von /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/1.9.1/rubyg ems/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 ' von /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 require' von/home/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 Block in ' von /home/lakhwani/FCLaunchRequirement/env/FCLaunchRequirementWebsite-1.0/runtime/ruby1.9/ gems/1.9.1/edelsteine ​​/ 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 initialisieren ' von /home/lakhwani/FCLaunchRequirement/src/FCLaunchRequirementWebsite/rails-root/config.ru:in new' from /home/lakhwani/FCLaunchRequirement/src/FCLaunchRequirementWebsite/rails-root/config.ru:in ' von /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 ' von /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 build_app_and_options_from_config ' from /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 ' von /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' von /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 laden ' von/home/lakhwani/FCLaunchRequirement/env/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 ': Befehl beendet mit Status 1 !! (Runtime) von /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 jeweils‘ von /home/lakhwani/FCLaunchRequirement/env/BrazilRake-1.1/runtime/bin/brazilrake : 48: in `

Kann mir jemand helfen, dieses Problem zu lösen?

Answer 1

Wie haben Sie das Schienenprojekt aktualisiert, um Schienen 4 zu verwenden? Für Schienen 4.2 und niedriger, wenn Sie es aktualisieren möchten, fügen Sie einfach die Schienenversion, die Sie wollen, in die Gemdatei der App ein und führen Sie rails app:update aus. Folgen Sie here.