ExecJS::RuntimeError in Say#hello

Question

Confused at what to do. Default rails install by the RailsInstaller.

started a new demo app. Using rails 3.2.14.

created a controller

rails generate controller Say hello goodbye

However whenever I navigate to the localhost it returns an execjs error.

So for

http://localhost:3000/say/hello

I received

 ExecJS::RuntimeError in Say#hello

Showing c:/work/demo/app/views/layouts/application.html.erb where line #6 raised:


  (in c:/work/demo/app/assets/javascripts/say.js.coffee)

Extracted source (around line #6):

3: <head>
4:   <title>Demo</title>
5:   <%= stylesheet_link_tag    "application", :media => "all" %>
6:   <%= javascript_include_tag "application" %>
7:   <%= csrf_meta_tags %>
8: </head>
9: <body>

Rails.root: c:/work/demo

I have tried searching for solutions but the only one I thought seemed applicable hasn't helped.

I added to my gemfile the below and did bundle update. No Success.

gem 'execjs'
gem 'therubyracer', :platforms => :ruby

What should I do?

EDIT

gemfile.lock http://pastebin.com/hGPJpxLp

@rmagnum2002 added to pastebin

sayth
– sayth

2013-08-15 04:50:52 +00:00
Commented Aug 15, 2013 at 4:50 — sayth
– sayth, Commented Aug 15, 2013 at 4:50
chat.stackoverflow.com/rooms/35488/…

rmagnum2002
– rmagnum2002

2013-08-15 04:53:09 +00:00
Commented Aug 15, 2013 at 4:53 — rmagnum2002
– rmagnum2002, Commented Aug 15, 2013 at 4:53

rmagnum2002 · Accepted Answer · 2013-08-15 05:37:54Z

1

Find ExecJS's runtimes.rb file.

bundle show execjs

Make a backup. Open the runtimes.rb and edit. Find the part that starts with the line JScript = ExternalRuntime.new(. On the line containing :command => "cscript //E:jscript //Nologo //U", - remove the //U only. Now in the line containing :encoding => 'UTF-16LE' # CScript with //U returns UTF-16LE - change UTF-16LE to UTF-8 . Save changes. Result should be like:

JScript = ExternalRuntime.new(
    :name        => "JScript",
    :command     => "cscript //E:jscript //Nologo",
    :runner_path => ExecJS.root + "/support/jscript_runner.js",
    :encoding    => 'UTF-8' # CScript with //U returns UTF-16LE
)

restart rails s, problem should be solved.

answered Aug 15, 2013 at 5:37

rmagnum2002

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Comments

Pinkoo · Accepted Answer · 2015-07-26 05:59:28Z

1

Use gem install node . I don't know why this works but it works .

answered Jul 26, 2015 at 5:59

Pinkoo

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Comments

Mostafa Hussein · Accepted Answer · 2013-08-15 05:42:43Z

0

Make sure you have gem 'therubyracer' and gem 'execjs' under assets group then run bundle install , also you can try Node.js instead of execjs

answered Aug 15, 2013 at 5:42

Mostafa Hussein

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3 Comments

rmagnum2002 Over a year ago

please read this in his question: I added to my gemfile the below and did bundle update.

Mostafa Hussein Over a year ago

i did , but maybe they not inside the assets block !, that happens with me before

rmagnum2002 Over a year ago

yea, you are right, it's hard to say where these gems are placed in.

Dennis · Accepted Answer · 2013-11-11 12:30:46Z

0

I also had a problem, After the R&D I installed node.js (http://nodejs.org/download/) the problem become solved.

answered Nov 11, 2013 at 12:30

Dennis

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Comments

sparta · Accepted Answer · 2013-11-19 12:52:05Z

0

adding the gem gem 'execjs' did it for me.

answered Nov 19, 2013 at 12:52

sparta

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