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Rails 3.1
Asset Pipeline
   Jeremy Olliver
Rails 3.1 Release
         Schedule

• August 8th: Rails 3.1.0.rc6
• August 22nd: Rails 3.1.0
Native Support for

• Sass
• Coffeescript
• asset packaging/minification/compression
• cache friendly static filenames (hash in
  filename not mtime querystring)
Assets Directory
             Structure
app
 assets
   javascripts
   stylesheets
   images

optional:
lib/assets (non-application specific assets)
vendor/assets (third party assets, css/js plugins etc)
How Does it Work?

• manifest files specify js/css files to load
• app/assets/javascripts/application.js
• app/assets/stylesheets/application.css
• Only needs changing for specifying load order
• Picks up coffeescript, javascript, css, and sass files
Coffeescript / JS
       compilation

• provided through sprockets and execjs
• Need to include a javascript runtime such
  as node.js or a native ruby implementation
  such as gems ‘therubyracer’ or ‘mustang’
Sass / Compass /
    Referencing assets

• use compass ‘rails31’ branch
• use sass (scss) it’s awesome
• referencing assets/images requires erb and
  asset_path helper
Deployment
• updated capistrano version coming up
• in the meantime:
 • rake assets:precompile
    RAILS_ENV=production
• compiles to public/assets

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Rails 3.1 Asset pipeline

  • 1. Rails 3.1 Asset Pipeline Jeremy Olliver
  • 2. Rails 3.1 Release Schedule • August 8th: Rails 3.1.0.rc6 • August 22nd: Rails 3.1.0
  • 3. Native Support for • Sass • Coffeescript • asset packaging/minification/compression • cache friendly static filenames (hash in filename not mtime querystring)
  • 4. Assets Directory Structure app assets javascripts stylesheets images optional: lib/assets (non-application specific assets) vendor/assets (third party assets, css/js plugins etc)
  • 5. How Does it Work? • manifest files specify js/css files to load • app/assets/javascripts/application.js • app/assets/stylesheets/application.css • Only needs changing for specifying load order • Picks up coffeescript, javascript, css, and sass files
  • 6. Coffeescript / JS compilation • provided through sprockets and execjs • Need to include a javascript runtime such as node.js or a native ruby implementation such as gems ‘therubyracer’ or ‘mustang’
  • 7. Sass / Compass / Referencing assets • use compass ‘rails31’ branch • use sass (scss) it’s awesome • referencing assets/images requires erb and asset_path helper
  • 8. Deployment • updated capistrano version coming up • in the meantime: • rake assets:precompile RAILS_ENV=production • compiles to public/assets