Hello,

Gemfile

gem "coffee-script"
gem "coffee-filter", :git => "git://github.com/paulnicholson/coffee-filter.git"
gem "haml", :git => "git://github.com/nex3/haml.git"

Trace

/Users/kain/.rvm/gems/ruby-1.9.2-p180/bundler/gems/coffee-filter-1f0ad0e93c06/lib/coffee-filter/coffeescript.rb:4:in `<module:Coffeescript>': uninitialized constant Coffee::Filter::Coffeescript::Haml (NameError)
    from /Users/kain/.rvm/gems/ruby-1.9.2-p180/bundler/gems/coffee-filter-1f0ad0e93c06/lib/coffee-filter/coffeescript.rb:3:in `<module:Filter>'
    from /Users/kain/.rvm/gems/ruby-1.9.2-p180/bundler/gems/coffee-filter-1f0ad0e93c06/lib/coffee-filter/coffeescript.rb:2:in `<module:Coffee>'
    from /Users/kain/.rvm/gems/ruby-1.9.2-p180/bundler/gems/coffee-filter-1f0ad0e93c06/lib/coffee-filter/coffeescript.rb:1:in `<top (required)>'
    from /Users/kain/.rvm/gems/ruby-1.9.2-p180/bundler/gems/coffee-filter-1f0ad0e93c06/lib/coffee-filter.rb:1:in `<top (required)>'

I got this error when I upgraded to haml 4.0 release candidate:

gems/coffee-filter-0.1.2/lib/coffee-filter/coffeescript.rb:8:in `<module:Coffeescript>': undefined method `lazy_require' for Coffee::Filter::Coffeescript:Module (NoMethodError)

Looks like haml 4.0 is going to be officially released in 2 days: haml/haml-rails#38

Fortunately, it looks like it includes official support for :coffee / :coffeescript filters so this gem will no longer be needed. (Thanks for providing it in the meantime though!)

I'm glad to see this gem—the various coffee-haml-filter forks were pretty undermaintained—but I'm curious: Is there any way to get around the requirement that I use a require 'coffee-filter' from Ruby code before using the filter? If I simply do

gem install coffee-filter
haml example.haml

(where example.haml contains your example code), I get

Haml error on line 3: Filter "coffeescript" is not defined.
  Use --trace for backtrace.

Some strange errors I'm getting today when I rebooted my rails app
Anytime I use :coffeescript I get an error.

For example

:coffeescript
alert("a")

The page results in:

ExecJS::RuntimeError in Users#index

Showing /index.html.haml where line # raised:

["ok","(function() {\n\n alert("a");\n\n}).call(this);\n"]

Which is weird because it looks like the script actually converted into coffeescript, but now it's just erroring anytime. I'm using thin web server on windows, and I have execjs installed. i'm not 100% sure it's the coffee-filter, but I do know that all my other coffeescripts in external files are being loaded OK.

The code below will display a alert with whatever version of Ruby you are using. Haven't gone under the hood yet but I couldn't think of any obvious way to get Barista to parse these interpolated strings instead of Haml/Ruby.

- content_for :javascripts do
  :coffeescript
    alert "This is coming from Rubyland: #{RUBY_VERSION}"

when i'm adding new gem "cocaine" or "coffee-script" with "coffee-filter" gem.then i'm getting this error--

When I use only numbers in the expression there is no error.
console.log "#{1+3}"
But when I use a variable in the expression, there is an error
a=3; console.log "#{a}"
The error message

ERROR: compiling /Users/praphan/Development/lab/rails3.1/hello/app/assets/haml/hello.html.haml RAISED undefined local variable or method a' for #<HamlAssets::HamlSprocketsEngine::ViewContext:0x007fa9e64d6dd0> Backtrace: (haml):3:inblock in render'
/Users/praphan/.rvm/gems/[email protected]/bundler/gems/haml-46d64d1123a9/lib/haml/engine.rb:191:in eval' /Users/praphan/.rvm/gems/[email protected]/bundler/gems/haml-46d64d1123a9/lib/haml/engine.rb:191:inrender'
/Users/praphan/.rvm/gems/[email protected]/gems/haml_assets-0.0.3/lib/haml_assets/haml_sprockets_engine.rb:40:in render_haml' /Users/praphan/.rvm/gems/[email protected]/gems/haml_assets-0.0.3/lib/haml_assets/haml_sprockets_engine.rb:28:inevaluate'
/Users/praphan/.rvm/gems/[email protected]/gems/tilt-1.3.3/lib/tilt/template.rb:76:in render' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/context.rb:175:inblock in evaluate'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/context.rb:172:in each' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/context.rb:172:inevaluate'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/bundled_asset.rb:171:in build_dependency_context_and_body' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/bundled_asset.rb:135:independency_context'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/bundled_asset.rb:194:in build_dependencies_paths_and_assets' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/bundled_asset.rb:141:independency_paths'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/bundled_asset.rb:61:in mtime' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/asset.rb:58:inblock in encode_with'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/asset.rb:57:in each' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/asset.rb:57:inencode_with'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/bundled_asset.rb:43:in encode_with' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/caching.rb:52:incache_asset'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/environment.rb:82:in build_asset' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/trail.rb:102:infind_asset_in_path'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/base.rb:101:in find_asset' /Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/environment.rb:72:infind_asset'
/Users/praphan/.rvm/gems/[email protected]/gems/sprockets-2.0.3/lib/sprockets/server.rb:42:in call' /Users/praphan/.rvm/gems/[email protected]/gems/rack-mount-0.8.3/lib/rack/mount/prefix.rb:26:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-mount-0.8.3/lib/rack/mount/route_set.rb:152:in block in call' /Users/praphan/.rvm/gems/[email protected]/gems/rack-mount-0.8.3/lib/rack/mount/code_generation.rb:96:inblock in recognize'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-mount-0.8.3/lib/rack/mount/code_generation.rb:68:in optimized_each' /Users/praphan/.rvm/gems/[email protected]/gems/rack-mount-0.8.3/lib/rack/mount/code_generation.rb:95:inrecognize'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-mount-0.8.3/lib/rack/mount/route_set.rb:141:in call' /Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/routing/route_set.rb:532:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/best_standards_support.rb:17:in call' /Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/etag.rb:23:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/conditionalget.rb:25:in call' /Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/head.rb:14:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/params_parser.rb:21:in call' /Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/flash.rb:243:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/session/abstract/id.rb:195:in context' /Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/session/abstract/id.rb:190:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/cookies.rb:331:in call' /Users/praphan/.rvm/gems/[email protected]/gems/activerecord-3.1.1/lib/active_record/query_cache.rb:62:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:477:in call' /Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/callbacks.rb:29:inblock in call'
/Users/praphan/.rvm/gems/[email protected]/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:392:in _run_call_callbacks' /Users/praphan/.rvm/gems/[email protected]/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:81:inrun_callbacks'
/Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/callbacks.rb:28:in call' /Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/reloader.rb:68:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/sendfile.rb:101:in call' /Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/remote_ip.rb:48:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/show_exceptions.rb:47:in call' /Users/praphan/.rvm/gems/[email protected]/gems/railties-3.1.1/lib/rails/rack/logger.rb:13:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/methodoverride.rb:24:in call' /Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/runtime.rb:17:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/activesupport-3.1.1/lib/active_support/cache/strategy/local_cache.rb:72:in call' /Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/lock.rb:15:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/actionpack-3.1.1/lib/action_dispatch/middleware/static.rb:53:in call' /Users/praphan/.rvm/gems/[email protected]/gems/railties-3.1.1/lib/rails/engine.rb:456:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/railties-3.1.1/lib/rails/rack/content_length.rb:16:in call' /Users/praphan/.rvm/gems/[email protected]/gems/railties-3.1.1/lib/rails/rack/log_tailer.rb:14:incall'
/Users/praphan/.rvm/gems/[email protected]/gems/rack-1.3.5/lib/rack/handler/mongrel.rb:77:in process' /Users/praphan/.rvm/gems/[email protected]/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:165:inblock in process_client'
/Users/praphan/.rvm/gems/[email protected]/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:164:in each' /Users/praphan/.rvm/gems/[email protected]/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:164:inprocess_client'
/Users/praphan/.rvm/gems/[email protected]/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:291:in `block (2 levels) in run'
Compiled hello.html (6ms) (pid 8920)
Served asset /hello.html - 200 OK (10ms)

I use Rails 3.1.1

My GemFile

gem 'mongrel'
gem 'haml_assets'
gem 'ejs'
gem "haml"
gem "coffee-filter"

gem 'guard-livereload'

Is there a way that it can be used in helpers?

like this:

coffee_filter_tag("alert 'tag created' if 1=1")

Hello

I have a following problem. I'm using HAML views in my rails app and i wanted to use some coffeescript in them. I added Barista to my gemfile:

gem 'haml'
gem 'coffee-filter'

and ran bundle install.
But when I try to use :coffeescript filter I get:

Haml::Error in carts#index

Showing /home/jesha/ror/prefab/app/views/carts/index.html.haml where line #7 raised:

Filter "coffeescript" is not defined.
Extracted source (around line #7):

4:
5: %br
6:
7: :coffeescript
8:   alert("test")
9:
10: %table

Do you know what am I doing wrong?