Server is not starting

Rails
1

I am running the command rails server on ubuntu 12.04 having rails 3 but
getting following error.

amir@ubuntu:~/app$ rails server
/home/amir/.rvm/gems/ruby-1.9.2-p320/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/amir/.rvm/gems/ruby-1.9.2-p320/gems/execjs-1.4.0/lib/execjs.rb:5:inmodule:ExecJS’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/execjs-1.4.0/lib/execjs.rb:4:in
<top (required)>' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:inrequire’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in
<top (required)>' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:inrequire’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in
<top (required)>' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:inrequire’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in
<top (required)>' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/bundler-1.1.4/lib/bundler/runtime.rb:68:inrequire’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/bundler-1.1.4/lib/bundler/runtime.rb:68:in
block (2 levels) in require' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/bundler-1.1.4/lib/bundler/runtime.rb:66:ineach’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/bundler-1.1.4/lib/bundler/runtime.rb:66:in
block in require' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/bundler-1.1.4/lib/bundler/runtime.rb:55:ineach’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/bundler-1.1.4/lib/bundler/runtime.rb:55:in
require' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/bundler-1.1.4/lib/bundler.rb:119:inrequire’
from /home/amir/app/config/application.rb:7:in <top (required)>' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.2.6/lib/rails/commands.rb:53:inrequire’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.2.6/lib/rails/commands.rb:53:in
block in <top (required)>' from /home/amir/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.2.6/lib/rails/commands.rb:50:intap’
from
/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.2.6/lib/rails/commands.rb:50:in
<top (required)>' from script/rails:6:inrequire’
from script/rails:6:in `’

Any help is appreciable.

Thanks
Amir

2

No offense but did you even read the error message before posting here?

3

Check what the error message is telling you. You need to install a
JavaScript runtime.

Could not find a JavaScript runtime. See
GitHub - sstephenson/execjs: Run JavaScript code from Ruby for a list of available runtimes

4

In your gem file add:

gem ‘ejxecjs’
gem ‘therubyracer’

save and run “bundle install”

Or you can install node.js on ubuntu:
http://qugstart.com/blog/node-js/how-to-install-node-js-on-ubuntu-and-create-an-app-in-5-minutes/

Matt’s

5

On Tue, Jun 19, 2012 at 5:09 PM, Amir Z. [email protected] wrote:

I am running the command rails server on ubuntu 12.04 having rails 3 but
getting following error.

amir@ubuntu:~/app$ rails server

/home/amir/.rvm/gems/ruby-1.9.2-p320/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in

`autodetect’: Could not find a JavaScript runtime. See
GitHub - sstephenson/execjs: Run JavaScript code from Ruby for a list of available runtimes.
(ExecJS::RuntimeUnavailable)

You may install nodejs using
sudo apt-get install nodejs

This may solve the problem.

–
Mandeep K.

6

Sorry,

gem ‘execjs’

Matt’s

7

Hard to believe that there are people that share their pure thoughts on
a
mailing list, without having any problem or value for discussion.

8

hard to believe rails sets up an app without this working…yikes.