Rails - Could not find a JavaScript runtime

Question

I created a new Rails project using rails 3 1 0 rc4 on my local machine but when I try to start the server I get  Could not find a JavaScript runtime  See here for a list of available runtimes   ExecJS  RuntimeUnavailable   Note  This is not about Heroku

User · Answer

On CentOS 6 5  the following worked for me   sudo yum install -y nodejs

User · Answer

Installing a javascript runtime library such as nodejs solves this To install nodejs on ubuntu  you can type the following command in the terminal  sudo apt-get install nodejs  To install nodejs on systems using yum  type the following in the terminal  yum -y install nodejs

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On the windows platform  I met that problem too The solution for me is just add   C  Windows System32   to the PATH   and restart the computer

User · Answer

Add following gems in your gem file  gem  therubyracer  gem  execjs    and run  bundle install   OR  Install Node js to fix it permanently for all projects

User · Answer

Install a Javascript runtime  The error is caused by the absence of a Javascript runtime on your local machine  To resolve this  you ll need to install NodeJS   You can install NodeJS through the Node Version Manager or nvm   First  install nvm       curl -o- https   raw githubusercontent com creationix nvm v0 31 0 install sh   bash   Install Node through nvm   nvm install 5 9 1   This will install version 5 9 1 of Node

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I ran into this issue using Phusion Passenger  running as an nginx module  on a Redhat server  We already had a Javascript runtime installed  Other Rails apps in the same parent directory worked fine     It turned out that we had a permissions issue  Run  ls -l  and see if the folder has the same owner and group as other working apps on the system  I had to run chown and chgrp on the folder  with the recursive switch  to fix it

User · Answer

I hope you have pre-installed nodejs    nmv   My solution does not require gem setup or installing  node with sudo apt  when you already have nvm   All you need is to edit DesctopEntry of RubyMine  for that we will have those small steps    Go to usr share applications Open in any editor  i use vim   Rubymine DesktopEntry vim RubyMine Edit line 6  starts with Exec   You shoud add to beginning  bin bash -i -c  So your line should look like  this Exec  bin bash -i -c   home USERNAME rubymine RubyMine-2019 1 2 bin rubymine sh   f Done  You are glorious    As a benefit all your environment variables are now available for RubyMine  So you feel no pain with additing them

User · Answer

If all fails you can try    aptitude install nodejs  as root  You can test your install with the following command     node -v  If you want to install NPM  please refer following link  Hope it helps

User · Answer

sudo apt-get install nodejs does not work for me  In order to get it to work  I have to do the following   sudo apt-get install python-software-properties sudo add-apt-repository ppa chris-lea node js sudo apt-get update sudo apt-get install nodejs   Hope this will help someone having the same problem as me

User · Answer

I had this issue on a Windows machine and installing node js was the solution that finally worked for me  This came after trying multiple other routes including trying to get  therubyracer  working  Though the github for node js suggests that installation on windows is still unstable  the website at http   nodejs org  had a Windows installer which worked perfectly

User · Answer

Note from Michael 12 28 2011 - I have changed my accept from this  rubytheracer  to above  nodejs  as therubyracer has code size issues   Heroku now strongly discourage it    It will  work  but may have size performance issues     If you add a runtime  such as therubyracer to your Gemfile and run bundle then try and start the server it should work   gem  therubyracer    A javascript runtime is required for compiling coffeescript and also for uglifier   Update  12 12 2011  Some folks found issues with rubytheracer  I think it was mostly code size    They found execjs  or nodejs  worked just as well  if not better  and were much smaller      n b  Coffeescript became a standard for 3 1

User · Answer

if you already install nodejs from source for example  and execjs isn t recognizing it you might want to try this tip  https   coderwall com p hyjdlw

[javascript] Rails - Could not find a JavaScript runtime?

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