Class: Utopia::Middleware::Redirector

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

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



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# File 'lib/utopia/middleware/redirector.rb', line 83

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

  @strings = options[:strings] || {}
  @patterns = options[:patterns] || []

  @patterns.collect! do |rule|
    if Symbol === rule[0]
      self.class.send(*rule)
    else
      rule
    end
  end

  @strings = normalize_strings(@strings)
  @patterns = normalize_patterns(@patterns)

  @errors = options[:errors]
end

Class Method Details

.moved(source_root, destination_root) ⇒ Object

Redirects a whole source tree to a destination tree, given by the roots.



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# File 'lib/utopia/middleware/redirector.rb', line 44

def self.moved(source_root, destination_root)
  return [
    /^#{Regexp.escape(source_root)}(.*)$/,
    lambda do |match|
      [301, {"Location" => (destination_root + match[1]).to_s}, []]
    end
  ]
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/utopia/middleware/redirector.rb', line 111

def call(env)
  base_path = env['PATH_INFO']

  if uri = @strings[base_path]
    return redirect(@strings[base_path], base_path)
  end

  @patterns.each do |pattern, uri|
    if match_data = pattern.match(base_path)
      result = redirect(uri, match_data)

      return result if result != nil
    end
  end

  response = @app.call(env)

  if @errors && response[0] >= 400 && uri = @errors[response[0]]
    error_request = env.merge("PATH_INFO" => uri, "REQUEST_METHOD" => "GET")
    error_response = @app.call(error_request)

    if error_response[0] >= 400
      raise FailedRequestError.new(env['PATH_INFO'], response[0], uri, error_response[0])
    else
      # Feed the error code back with the error document
      error_response[0] = response[0]
      return error_response
    end
  else
    return response
  end
end

#redirect(uri, match_data) ⇒ Object 



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# File 'lib/utopia/middleware/redirector.rb', line 103

def redirect(uri, match_data)
  if uri.respond_to? :call
    return uri.call(match_data)
  else
    return [301, {"Location" => uri.to_s}, []]
  end
end