Assets Pipeline - ruby-on-rails

Question

I've got an issue with assets pipeline in production mode. I ranbundle exec rake assets:precompilein development and it works fine. However when I ran it in production server(after deployment), the css and js files can not be loaded properly. When I access css or js files through url /assets/[file_name], I get 500 error. I thought it's a permission issue but all files under /public/assets can be accessible. Production.rb and development.rb files are all intact(from scaffolding). I can see all the files listing in the html though. Any hint would be much appreciated. Thanks
production.rb:
# Code is not reloaded between requests
config.cache_classes = true
# Full error reports are disabled and caching is turned on
config.consider_all_requests_local = false
config.action_controller.perform_caching = true
# Disable Rails's static asset server (Apache or nginx will already do this)
config.serve_static_assets = false
# Compress JavaScripts and CSS
config.assets.compress = true
# Don't fallback to assets pipeline if a precompiled asset is missed
config.assets.compile = true
# Enable locale fallbacks for I18n (makes lookups for any locale fall back to
# the I18n.default_locale when a translation can not be found)
config.i18n.fallbacks = true
# Send deprecation notices to registered listeners
config.active_support.deprecation = :notify
Gemfile(snapshot):
gem 'rails', '3.2.11'
gem 'pg'
gem 'json'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer'
gem 'uglifier', '>= 1.0.3'
end
gem 'compass-rails'
# Deployment related
gem 'capistrano'
gem 'capistrano-ext'
gem 'jquery-rails', '~> 2.0.0'
gem 'jquery-datatables-rails'
group :development do
gem 'guard'
end
Application.css:
/*
* This is a manifest file that'll be compiled into application.css, which will include all the files
* listed below.
*
* Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
* or vendor/assets/stylesheets of plugins, if any, can be referenced here using a relative path.
*
* You're free to add application-wide styles to this file and they'll appear at the top of the
* compiled file, but it's generally better to create a new file per style scope.
*
*= require_self
*= require dataTables/jquery.dataTables
*= require bootstrap.scss
*= require bootstrap-responsive.scss
*= require_tree .
*/
I have another application.css.scss for sass related:
#import "compass";
#import "compass/utilities/tables";
.ftr-ticker {
background: #333;
height: 25px;
width: 100%;
}
....

Answer 1

You have modified a manifest file application.css and I think that gives a problems . My advice is to rename your scss file to other name , not application (might be custom.css.scss) and include it in the manifest application.css file like this:
*= require custom
As you can see , the names of stylesheet files are not prefixed . Your *= require bootstrap.scss should be *= require bootstrap . I suggest also to move require_tree after all others requires. This Railsguide is going to help you with asset-pipeline in Rails 3.2.