Class: RogerThemes::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/roger_themes/middleware.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/roger_themes/middleware.rb', line 5

def initialize(app, options = {})
  @app = app

  defaults = {
    default_theme: "default",
    shared_folders: ["images", "fonts"]
  }

  @options = defaults.update(options)
  @shared_folders = SharedFolders.new(@options[:shared_folders])
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/roger_themes/middleware.rb', line 17

def call(env)
  path = ::Rack::Utils.unescape(env["PATH_INFO"])
  r = /\A\/themes\/([^\/]+)\/theme\//
  if theme = path[r,1]
    orig_path = env["PATH_INFO"].dup
    env["SITE_THEME"] = theme
    env["PATH_INFO"].sub!(r,"")
  else
    # Set default theme
    env["SITE_THEME"] = @options[:default_theme]
  end

  ret = @app.call(env)

  # Fallback for shared images
  unless ret[0] == 200

    shared_path = @shared_folders.local_to_shared_path(path)

    if shared_path
      # Store so we can restore later
      orig_path = env["PATH_INFO"].dup
      env["PATH_INFO"] = shared_path
    end

    ret = @app.call(env)

    # Restore path so we are nice with everybody else
    env["PATH_INFO"] = orig_path
  end

  ret
end