Rails 3 Coffee Handler Missing

Question

Im using Ruby 1.9.3p0, Rails 3.1.2 with Apache and Passenger in Production. When I try to make a remote function, it throws me this error:

ActionView::MissingTemplate (Missing template video/loadVideo, application/loadVideo with
{:handlers=>[:erb, :builder], :formats=>[:js, "application/ecmascript", "application/x-
ecmascript", :html, :text, :js, :css, :ics, :csv, :xml, :rss, :atom, :yaml, 
:multipart_form, :url_encoded_form, :json], :locale=>[:en, :en]}. Searched in

As you can see, there is no handler for :coffee, that's the reason why is not processing the file video/loadVideo.js.coffee; I run the command rake assets:precompile but nothing changes.

The Gemfile source 'http://rubygems.org'

gem 'rails', '3.1.2'

# Bundle edge Rails instead:
# gem 'rails',     :git => 'git://github.com/rails/rails.git'

gem 'will_paginate', '~> 3.0'
gem "bcrypt-ruby", :require => "bcrypt"
gem 'mysql'

#Problems in Debian, the error was:
#Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs #for a list of available runtimes. (ExecJS::RuntimeUnavailable)
#Solution: http://stackoverflow.com/questions/6282307/rails-3-1-execjs-and-could-not-find-a-javascript-runtime
gem 'execjs'
gem 'therubyracer'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.1.5.rc.2'
  gem 'coffee-rails', '~> 3.1.1'
  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'

# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# Use unicorn as the web server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'

group :test do
  # Pretty printed test output
  gem 'turn', '0.8.2', :require => false
end

Having the coffee-rails gem inside there doesn't mean that it provides a coffee handler. — Ryan Bigg, Jan 09 '12 at 01:24
Please, do not use camel case for templates. Rails convention is to use underscores. `loadVideo` template should be `load_video`. — Simone Carletti, Jan 09 '12 at 14:50

score 13 · Answer 1 · answered Jan 13 '12 at 06:30

Change your Gemfile (move coffee-rails gem outside the assets group) or change your application.rb settings - for instance

if defined?(Bundler)
  # If you precompile assets before deploying to production, use this line
  # Bundler.require(*Rails.groups(:assets => %w(development test)))
  # If you want your assets lazily compiled in production, use this line
  Bundler.require(:default, :assets, Rails.env)
end

In development environment application by default loads all of gems from :default, :development, :test, :assets groups. Coffee handler comes from coffee-rails gem, so you have to load it.

I hit the same thing and it worked once I moved the coffee gem out of the assets namespace. I guess most people only use coffeescript in assets and not in views... The weird thing is, it worked in development mode when the Gem was only specified in the assets block. — hoyhoy, May 04 '12 at 23:08

Rails 3 Coffee Handler Missing

1 Answers1