CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3ubuntu
sgerbhctim
sgerbhctim

Reputation: 3640

rails 3 generate controller not working

i'm learning RoR, and I'm getting an error when generating a controller

mitchell@ubuntu:~/Ruby/Website/blog$ rails generate controller posts

/home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/execjs-1.4.0/lib/execjs.rb:4:in `<top (required)>'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.1/lib/bundler/runtime.rb:68:in `require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.1/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.1/lib/bundler/runtime.rb:66:in `each'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.1/lib/bundler/runtime.rb:66:in `block in require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.1/lib/bundler/runtime.rb:55:in `each'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.1/lib/bundler/runtime.rb:55:in `require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.1/lib/bundler.rb:128:in `require'
from /home/mitchell/Ruby/Website/blog/config/application.rb:7:in `<top (required)>'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/railties-3.2.9/lib/rails/commands.rb:24:in `require'
from /home/mitchell/.rvm/gems/ruby-1.9.3-p327/gems/railties-3.2.9/lib/rails/commands.rb:24:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

I'm running Rails 3.2.9 and Ruby 1.9.3 on Ubuntu.

Upvotes: 0

Views: 1033

Answers (1)

Alex Wayne
Alex Wayne

Reputation: 187252

You are missing a command line Javascript interpreter on your development machine.

Install node.js and you should be good.

And for the record, this message seems pretty clear:

Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)

Did you go to that URL and see what it says?

In general, error messages are very helpful things. When something doesn't work that message is supposed to tell you why, and sometimes even how to fix it.

Upvotes: 2

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