pakyow-assets

Asset handling for Pakyow. It's intended to be lightweight and fast in development while providing powerful fingerprinting and caching features for production environments.

In development, assets are compiled on demand. They're recompiled again only if the source changes.

When starting up in production, Pakyow will compile, minify, and fingerprint every asset file. Fingerprinted filenames are automatically handled.

Bundled preprocessors include: js, css, png, gif, jpg, favicon, and sass.

Installation

Place inside your Gemfile

gem 'pakyow-assets'

Run bundle install and restart your app server.

Usage

Place all assets in a app/assets directory. When compiled, assets will mimic the directory structure. During development, all assets will be compiled to a .assets directory. Pakyow will serve requests to all assets when running in a development environment. All assets should be in their original, non-minified state; this makes debugging easier in development.

It's recommended that .assets be excluded from version control.

In production, assets will automatically be minified and fingerprinted when the app boots up. As a developer you don't have to worry about fingerprinting assets or setting cache headers; Pakyow does that for you.

Here are the cache headers that Pakyow sets for fingerprinted assets (mtime is the last modified timestamp of the asset):

headers['Age'] = (Time.now - mtime).to_i
headers['Cache-Control'] = 'public, max-age=31536000'
headers['Vary'] = 'Accept-Encoding'
headers['Last-Modified'] = mtime.httpdate

Non-fingerprinted assets will be served, but without cache headers.

Configuration

Take a look at lib/config.rb for all available options.

Custom Preprocessors

Pakyow Assets can easily be extended to support new asset types. Take a look at the existing preprocessors in lib/preprocessors for examples on how to write your own. Eventually all bundled preprocessors will be moved into their own gem, following the pakyow-{preprocessor-name} convention (e.g. pakyow-sass).

External Asset Stores

Any number of asset stores can be registered:

Pakyow::Config.assets.stores[:store_name] = 'absolute_path_to_store'

Assets from all stores will be compiled together into the app. This is intended to be used when including assets in external libraries.

License

pakyow-assets is released under the MIT License.