Problemas al intentar lanzar Rails Server

Question

Perdón Si esta es una mala pregunta, estoy tratando de establecer inicialmente rieles, así que realmente no sé qué estoy haciendo.En el tutorial, estoy siguiendo, llega a un punto en el que se dice que ejecuta "Rails Server", sin embargo, esto está devolviendo algunos resultados inesperados. (Ver más abajo)

Macbookpro:First Cameron$ sudo rails server
Password:
=> Booting WEBrick
=> Rails 4.1.0 application starting in development on http:// 0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
=> Ctrl-C to shutdown server
Exiting
/Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/railtie/configuration.rb:95:in `method_missing': undefined method `action_mailer' for #<Rails::Application::Configuration:0x007fea90b47760> (NoMethodError)
    from /Users/admin/Rails/First/config/environments/development.rb:17:in `block in <top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/railtie.rb:210:in `instance_eval'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/railtie.rb:210:in `configure'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/railtie.rb:182:in `configure'
    from /Users/admin/Rails/First/config/environments/development.rb:1:in `<top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:in `block in require'
    from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:232:in `load_dependency'
    from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/engine.rb:594:in `block (2 levels) in <class:Engine>'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/engine.rb:593:in `each'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/engine.rb:593:in `block in <class:Engine>'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/initializable.rb:30:in `instance_exec'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/initializable.rb:30:in `run'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:210:in `block (2 levels) in each_strongly_connected_component_from'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:209:in `block in each_strongly_connected_component_from'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/initializable.rb:44:in `each'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/initializable.rb:44:in `tsort_each_child'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:203:in `each_strongly_connected_component_from'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:180:in `each'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/initializable.rb:54:in `run_initializers'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/application.rb:288:in `initialize!'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/railtie.rb:194:in `public_send'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/railtie.rb:194:in `method_missing'
    from /Users/admin/Rails/First/config/environment.rb:5:in `<top (required)>'
    from /Users/admin/Rails/First/config.ru:3:in `require'
    from /Users/admin/Rails/First/config.ru:3:in `block in <main>'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
    from /Users/admin/Rails/First/config.ru:in `new'
    from /Users/admin/Rails/First/config.ru:in `<main>'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:199:in `app'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands/server.rb:50:in `app'
    from /Library/Ruby/Gems/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands/server.rb:130:in `log_to_stdout'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands/server.rb:67:in `start'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands/commands_tasks.rb:81:in `block in server'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands/commands_tasks.rb:76:in `tap'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands/commands_tasks.rb:76:in `server'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.1.0/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

Lo siento si esto no es necesario, pero realmente no estoy seguro de qué hacer con él.

Answer 1

No creo que estés solo en este error. Asegúrese de coordinar sus versiones de GEM, e incluso mejor si especifique las versiones de sus rieles y gemas de rubí para evitar posibles conflictos en la versión.

Publicar su gemfile sería útil, pero sin verlo, diría que especifique su versión de rubí en la parte superior de su gemfile como:

source 'https://rubygems.org'
ruby '2.0.0'

luego especifique su versión de rieles.Si bien no he tenido problemas con solo proporcionar:

gem 'rails'

Podría ser más seguro y especificar una versión como:

gem 'rails', '4.0.2'

Luego ejecute: bundle install para su aplicación.

Answer 2

Eche un vistazo al siguiente tutorial.Me doy cuenta de que es para Windows, sin embargo, resolvió todos los problemas iniciales que estaba teniendo con mi primera instalación.

http://www.sohehokamoto.com/setting-up-ruby-on-rays-on-windows

El punto principal que me ayudó a instalar perfectamente fue;

Ejecutar gem update en una instalación nueva para asegurarse de que todo esté actualizado