Class: Sass::Plugin::Rack

Inherits:
Object
  • Object
show all
Defined in:
lib/sass/plugin/rack.rb

Overview

Rack middleware for compiling Sass code.

Activate

require 'sass/plugin/rack'
use Sass::Plugin::Rack

Customize

Sass::Plugin.options.merge!(
  :cache_location => './tmp/sass-cache',
  :never_update => environment != :production,
  :full_exception => environment != :production)

See the Reference for more options.

Use

Put your Sass files in public/stylesheets/sass. Your CSS will be generated in public/stylesheets, and regenerated every request if necessary. The locations and frequency can be customized. That's all there is to it!

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, dwell = 1.0) ⇒ Rack

Initialize the middleware.

Parameters:

  • app (#call) —

    The Rack application

  • dwell (Float) (defaults to: 1.0) —

    See #dwell



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# File 'lib/sass/plugin/rack.rb', line 38

def initialize(app, dwell = 1.0)
  @app = app
  @dwell = dwell
  @check_after = Time.now.to_f
end

Instance Attribute Details

#dwell ⇒ Float

The delay, in seconds, between update checks. Useful when many resources are requested for a single page. nil means no delay at all.

Returns:

  • (Float) 


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# File 'lib/sass/plugin/rack.rb', line 32

def dwell
  @dwell
end

Instance Method Details

#call(env) ⇒ (#to_i, {String => String}, Object)

Process a request, checking the Sass stylesheets for changes and updating them if necessary.

Parameters:

  • env —

    The Rack request environment

Returns:

  • ((#to_i, {String => String}, Object)) —

    The Rack response



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# File 'lib/sass/plugin/rack.rb', line 49

def call(env)
  if @dwell.nil? || Time.now.to_f > @check_after
    Sass::Plugin.check_for_updates
    @check_after = Time.now.to_f + @dwell if @dwell
  end
  @app.call(env)
end