Class: Asset::Router

Inherits:
Object
  • Object
show all
Defined in:
lib/assets/router.rb

Overview

The Router class is a small Rack middleware that matches the asset URLs and serves the content, compressed if you are in production mode.

Constant Summary collapse

MIME =

Mime types for responses

{'js' => 'application/javascript;charset=utf-8', 'css' => 'text/css;charset=utf-8', 'txt' => 'text/plain;charset=utf-8'}

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Router

Init



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# File 'lib/assets/router.rb', line 10

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object

Call



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# File 'lib/assets/router.rb', line 15

def call(env)
  # Setting up request
  @request = Rack::Request.new(env)

  # The routes
  case @request.path_info

  # Match /assets?/:type/path
  when /^(\/assets)?\/(js|css)\/(.+)/
    # Extract type and path
    type, path = $2, $3

    # Extract digest key and remove from path
    path.gsub!("-#{@key = $1}", '') if path =~ /-([a-f0-9]{32})\.(css|js)$/

    # Find the item
    item = ::Asset.manifest.find{|i| i.path == path and i.type == type}

    # Return the content or not found
    item ? found(item) : not_found

  # Bounce favicon requests
  when (::Asset.favicon and /^\/favicon\.ico$/)
    not_found

  # Return a standard robots.txt
  when (::Asset.robots and /^\/robots\.txt$/)
    robots

  else
    # No routes found, pass down the middleware stack
    @app.call(env)
  end
end