A Rake task that helps you find dead routes and unused actions in your Rails 3 app.
This Rake task investigates your Rails application’s routes definition, then shows you the unused routes and unreachable action methods.
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Ruby 1.8.7, 1.9.2, 1.9.3, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 3.0, 3.1 (trunk)
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Rails 3.0.x, 3.1.x, 3.2.x, 4.0.x, 4.1.x, 5.0.x, 5.1.x, 5.2.x, 6.0, 6.1, 7.0 (master)
Put this line in your Gemfile:
gem 'traceroute'
Then bundle:
% bundle
Just run the following command in your Rails app directory.
% rake traceroute
If you want the rake task to fail when errors are found.
% FAIL_ON_ERROR=1 rake traceroute
Consider you have the following routes.rb and a controller:
# config/routes.rb YourRailsApp::Application.routes.draw do resources :users, :only => [:index, :show, :new, :create] match 'products/:id/purchase' => 'catalog#purchase', :as => :purchase end # app/controllers/users_controller.rb class UsersController < ApplicationController def index @users = User.page(params[:page]) end def index2 end def show @user = User.find(params[:id]) end end
Running the Rake task will print something like this for you:
Unused routes (3): users#create users#new catalog#purchase Unreachable action methods (1): users#index2
OMG super helpful, isn’t it?
Some gems out there that inject routes or actions into our app for testing. Jasmine-Rails does this. They can give you false negatives when running this in development mode. It can be useful to ignore said routes or actions.
Create a .traceroute.yaml (or .traceroute.yml or .traceroute) file in your root directory.
# .traceroute.yaml ignore_unreachable_actions: - ^jasmine_rails\/ ignore_unused_routes: - ^users#index
Both yaml headers accept a list of regexes.
Q: It makes a fuss over the default route at the very bottom. WTF? A: Please do not use that. Did you read the comment in your routes.rb? Actually this task will help you a lot to remove that evil route. Q: "command not found: traceroute" Did you mean: tracert A: I'm afraid you're using the wrong operating system.
Feel free to message me on Github (amatsuda) or Twitter (@a_matsuda) ☇3☇3☇3
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Fork, patch, then send me a pull request.
Copyright © 2011 Akira Matsuda. See MIT-LICENSE file for further details.