Creating ruby hash object from Rails routes?

Question

Using rails 4.2.1

I want to store my rails declared routes from config/routes.rb into a ruby hash that I can access or render somewhere.

The hash should be of the format

{
  name: 'path',
  # e.g.
  login: '/login',
  home: '/'
}

How do I do this in rails?

Note: I think you get the routes through Rails.application.routes and maybe the names from Rails.application.routes.routes.named_routes.keys, but what's next?

Why do you want to do this? Why to you want to achieve? There might be a better solution than a hash if you tell us more about your use case. — spickermann
– spickermann, Commented May 13, 2015 at 4:53
@spickermann I want to create a json object to use on the front end to look up url strings based on route names. — Derek
– Derek, Commented May 13, 2015 at 4:56
This is what I expected. There is a Gem for supports that. Please see my answer below. — spickermann
– spickermann, Commented May 13, 2015 at 5:50

infused · Accepted Answer · 2015-05-13 05:18:01Z

1

This will give you a Hash where the keys are the route names and the values are the paths:

routes = Hash[Rails.application.routes.routes.map { |r| [r.name, r.path.spec.to_s] }]

routes will now look like:

{
  "entities" => "/entities(.:format)",
  "new_entity" => "/entities/new(.:format)",
  "edit_entity" => "/entities/:id/edit(.:format)",
  "entity" => "/entities/:id(.:format)"
}

answered May 13, 2015 at 5:18

infused

24.5k13 gold badges71 silver badges80 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Jimmy Baker · Accepted Answer · 2015-05-13 04:59:06Z

1

If you really have to do this, you can:

ri = ActionDispatch::Routing::RoutesInspector.new([])
result = ri.send :collect_routes, Rails.application.routes.routes

The result will be an array of hashes which look like:

{:name=>"product", :verb=>"GET", :path=>"/products/:id(.:format)", :reqs=>"products#show", :regexp=>"^\\/products\\/([^\\/.?]+)(?:\\.([^\\/.?]+))?$"}

answered May 13, 2015 at 4:59

Jimmy Baker

3,2551 gold badge27 silver badges27 bronze badges

Comments

spickermann · Accepted Answer · 2015-05-13 05:48:55Z

1

You may want to use the JS-Routes gem that generates a javascript file that defines all Rails named routes as javascript helpers.

Setup (just add it to the asset pipeline):

# add to your application.js
/*
= require js-routes
*/

Usage your javascript code like this:

Routes.users_path()                   // => "/users"
Routes.user_path(1)                   // => "/users/1"
Routes.user_path(1, {format: 'json'}) // => "/users/1.json"

Find the documentation here: https://github.com/railsware/js-routes#usage

answered May 13, 2015 at 5:48

spickermann

108k9 gold badges115 silver badges147 bronze badges

1 Comment

Derek Over a year ago

+1 Going to have to pick another answer that answered the question more precisely, but this definitely helped me deal with my problem.

Collectives™ on Stack Overflow

Creating ruby hash object from Rails routes?

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related