sass fails to load

[dazza-codes]

Does swagger_engine/app/assets/stylesheets/swagger_engine/application.scss really need the sass extension? Everything it includes seems to be a CSS file.

The stack trace on failing to load is:

LoadError (cannot load such file -- sass):
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:274:in `require'
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:274:in `block in require'
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in `load_dependency'
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:274:in `require'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/autoload/sass.rb:1:in `<top (required)>'
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:274:in `require'
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:274:in `block in require'
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in `load_dependency'
  .bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:274:in `require'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:47:in `initialize'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:26:in `new'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:26:in `instance'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:30:in `call'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:75:in `call_processor'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `reverse_each'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `call_processors'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:134:in `load_from_unloaded'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:60:in `block in load'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:44:in `load'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:20:in `block in initialize'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:47:in `load'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/bundle.rb:23:in `block in call'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/utils.rb:196:in `dfs'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/bundle.rb:24:in `call'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:75:in `call_processor'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `reverse_each'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `call_processors'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:134:in `load_from_unloaded'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:60:in `block in load'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/loader.rb:44:in `load'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:20:in `block in initialize'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:47:in `load'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/base.rb:66:in `find_asset'
  .bundle/ruby/2.3.0/gems/sprockets-3.7.0/lib/sprockets/base.rb:92:in `[]'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:338:in `find_asset'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:330:in `find_debug_asset'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:212:in `block in lookup_debug_asset'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:225:in `block in resolve_asset'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:224:in `each'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:224:in `detect'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:224:in `resolve_asset'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:211:in `lookup_debug_asset'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:153:in `block in stylesheet_link_tag'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:152:in `map'
  .bundle/ruby/2.3.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/helper.rb:152:in `stylesheet_link_tag'
  .bundle/ruby/2.3.0/gems/swagger_engine-0.0.3/app/views/swagger_engine/swaggers/show.html.erb:9:in `__bundle_ruby_______gems_swagger_engine_______app_views_swagger_engine_swaggers_show_html_erb___3304769952346300383_47108061396880'

[dazza-codes]

To get things working, I had to:

1. Add gem 'sass-rails' to Gemfile and bundle install
2. Add the following to config/initializers/assets.rb

Rails.application.config.assets.precompile += %w( swagger_engine/reset.css )
Rails.application.config.assets.precompile += %w( swagger_engine/print.css )

Not clear about why these additions are required. (The base rails app is for an API and it doesn't seem to include sass by default.)

[scarroll32]

I had the same issue. Does it need to be documented in the README?