gistfile1.txt

authkey.rb

  authenticate!(key)
    if success
      response = [:status=>"success", :remaining_requests=>499]
    else
      response = [:status=>"failure", :remaining_requests=>499, :errors => [something]]
    end
  end
  
application_controller.rb

  before_filter :authenticate_key!
  
  def current_key
    unless @auth_key
      if session[:token].present?
        @auth_key = AuthKey.find_by_token(session[:token])
      end
    end
    return @auth_key
  end
  
  def authenticate_key!
    
    if current_key
      number_of_requests_remaining = current_key.requests_remaining
      header.write(number_of_requests_remaining)
      
      unless current_key.is_active?
        render_error(:message => "key is not active", :status => 300)
      end
      unless current_key.can?(params[:action])
        render_error(:message => "not allowed to perform that action", :status => 300)
      end
      unless current_key.check_rate_limit
        render_error(:message => "Rate limit exceeded", :status => 300)
      end
    else
      render_error(:message => "key not found", :status => 300)
    end
  end
  
  def render_error(error, status)
    render some_json_builder(:message => error, :status => status)
  end
  
end


request_count = current_key.auth_requests.where(:created_at.gte => Authkey::THROTTLE_AGE.hours.ago).count