Question

Same app, different problem. I’m working on an app using the Dan Benjamin “Meet Sinatra” screencast as a reference. I’m trying to include a custom authentication module, which is housed in a lib folder (lib/authentication.rb). I am requiring that line at the top of my code, but when I try to load the page, it claims there is no such file to load.

Any thoughts?

Here’s the top of my main Sinatra file:

require 'sinatra'
require 'rubygems'
require 'datamapper'
require 'dm-core'
require 'lib/authorization'

DataMapper::setup(:default, "sqlite3://#{Dir.pwd}/entries.db")

class Entry
include DataMapper::Resource

property :id,           Serial
property :first_name,   String
property :last_name,    String
property :email,        String
property :created_at,   DateTime    

end

# create, upgrade, or migrate tables automatically
DataMapper.auto_upgrade!

helpers do
include Sinatra::Authorization
end

And the actual Module:

module Sinatra
  module Authorization

  def auth
    @auth ||= Rack::Auth::Basic::Request.new(request.env)
  end

  def unauthorized!(realm="Short URL Generator")
    headers 'WWW-Authenticate' => %(Basic realm="#{realm}")
    throw :halt, [ 401, 'Authorization Required' ]
  end

  def bad_request!
    throw :halt, [ 400, 'Bad Request' ]
  end

  def authorized?
    request.env['REMOTE_USER']
  end

  def authorize(username, password)
    if (username=='topfunky' && password=='peepcode') then
      true
  else
    false
  end
end

def require_admin
  return if authorized?
  unauthorized! unless auth.provided?
  bad_request! unless auth.basic?
  unauthorized! unless authorize(*auth.credentials)
  request.env['REMOTE_USER'] = auth.username
end

  def admin?
    authorized?
  end

  end
end

Then, on any of the handlers I want to protect, I put “require_admin.”

Answer 1

Assuming you’re using Ruby 1.9, the default $LOAD_PATH no longer includes the current directory. So while statements like require 'sinatra' work just fine (because those gems are in $LOAD_PATH), Ruby doesn’t know that your lib/authorization file is located relative to your main Sinatra file.

You can add the Sinatra file’s directory to the load path, and then your require statements should work fine:

$LOAD_PATH.unshift(File.dirname(__FILE__))
require 'sinatra'
require 'rubygems' # Not actually needed on Ruby 1.9
require 'datamapper'
require 'dm-core'
require 'lib/authorization'