rails 3.1 raise error in production env

[timoschilling]

Rails 3.1 raise the following error in production env:
ActionView::Template::Error (TypeError: a.reduce is not a function)

[asanghi]

@timoschilling , can you please provide a gist with a complete backtrace? Also explain your scenario a bit more please.

[josevalim]

We are also getting this on CI. It is probably an error related to the uglifier gem and/or assets pipeline. @timoschilling, please provide the full backtrace and the result of "bundle show".

[timoschilling]

Setup:

• Apache
• Passenger 3.0.7
• REE 1.8.7
• Gems
• Environment: production
  • actionmailer (3.1.0.beta1)
  • actionpack (3.1.0.beta1)
  • activemodel (3.1.0.beta1)
  • activerecord (3.1.0.beta1)
  • activeresource (3.1.0.beta1)
  • activesupport (3.1.0.beta1)
  • arel (2.1.0)
  • bcrypt-ruby (2.1.4)
  • bson (1.3.0)
  • builder (3.0.0)
  • bundler (1.0.13)
  • cancan (1.6.4)
  • capistrano (2.5.18)
  • carrierwave (0.5.3)
  • coffee-script (2.2.0)
  • coffee-script-source (1.1.0)
  • devise (1.3.4)
  • erubis (2.7.0)
  • execjs (0.3.3)
  • geocoder (1.0.0)
  • haml (3.1.1)
  • highline (1.6.1)
  • hike (1.0.0)
  • i18n (0.6.0beta1)
  • jquery-rails (1.0)
  • json (1.5.1)
  • mail (2.3.0)
  • mime-types (1.16)
  • mini_magick (1.2.5)
  • mongo (1.3.0)
  • mongoid (2.0.1 b2eaa45)
  • mongoid_acts_as_tree (0.1.7 4b0fc2d)
  • multi_json (1.0.1)
  • net-scp (1.0.4)
  • net-sftp (2.0.5)
  • net-ssh (2.1.4)
  • net-ssh-gateway (1.1.0)
  • orm_adapter (0.0.5)
  • polyglot (0.3.1)
  • rack (1.3.0.beta)
  • rack-cache (1.0.1)
  • rack-mount (0.7.2)
  • rack-ssl (1.3.2)
  • rack-test (0.6.0)
  • rails (3.1.0.beta1)
  • railties (3.1.0.beta1)
  • rake (0.8.7)
  • rdiscount (1.6.8)
  • sass (3.1.1)
  • sprockets (2.0.0.beta.2)
  • thor (0.14.6)
  • tilt (1.3)
  • treetop (1.4.9)
  • tzinfo (0.3.27)
  • uglifier (0.5.1)
  • vrame (0.6.0 77a5be8)
  • warden (1.0.4)

Log:
Started GET "/xxxx/login" for 127.0.0.1 at Wed May 11 11:11:55 +0200 2011
Processing by XXXX::SessionsController#new as
Rendered vendor/bundle/ruby/1.8/bundler/gems/xxxx-77a5be8b259d/app/views/vrame/sessions/new.html.haml within layouts/vrame (63.6ms)
[Sprockets] xxxx/xxxx.css building
[Sprockets] xxxx/xxxx.js building
Completed 500 Internal Server Error in 4174ms

ActionView::Template::Error (TypeError: a.reduce is not a function):
11:
12: %title= @page_title ? " - #{strip_tags(@page_title)}" : "XXXX"
13: = stylesheet_link_tag "xxxxx/vrame"
14: = javascript_include_tag "xxxxx/vrame"
15: %body
16: = render :partial => 'xxxx/shared/header'
17: = yield :sub_navigation

Rendered vendor/bundle/ruby/1.8/gems/actionpack-3.1.0.beta1/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.8ms)
Rendered vendor/bundle/ruby/1.8/gems/actionpack-3.1.0.beta1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.7ms)
Rendered vendor/bundle/ruby/1.8/gems/actionpack-3.1.0.beta1/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (3.4ms)

The Error is not in the application template, the Error is with a empty template the same.

If i set the Envirement to development, every thinks works!

[spastorino]

@timoschilling can you try changing uglifier in the Gemfile to gem 'uglifier', :git => 'https://github.com/lautis/uglifier.git' ?
I think this should work.

[spastorino]

@timoschilling any news here?

[timoschilling]

@spastorino i can test this only on the weekend

[timoschilling]

now i use gem 'uglifier', :git => 'https://github.com/lautis/uglifier.git'

currently i become the error ActionView::Template::Error (TypeError: statements.reduce is not a function) in production env on the production server, running in development env works, local both env works

[josevalim]

Could you please output the result of "ExecJS.runtime" in development and production? You need latest ExecJS and you can get that in console.

[lautis]

Uglifier had issues when used with therubyrhino runtime as its JS environment doesn't include some ES5 functions used in UglifyJS (Array.prototype.forEach, Array.prototype.reduce). At least therubyrhino seems to be working after lautis/uglifier@564cc9c.

If you run into similar issues with other runtimes (JScript?), please let me know so that I can fix them.

[dhh]

Can't replicate with latest uglifier. Please reopen if you can replicate.

[timoschilling]

the problem is still there in ree-1.8.7, i solve the problem for me with switching to ruby 1.9.2

[lautis]

Do you still get the same exception? What ExecJS runtime are you using with ree-1.8.7?

[timoschilling]

the exception was the same or a little bit different. Sorry but i remove the ree environment and switch to 1.9.2