CODEWITHSUNDEEP
ruby-on-railsroutes
Philipp Meissner
Philipp Meissner

Reputation: 5482

Add link to namespace'd route in Rails

Let's start off with some code:

Rails.application.routes.draw do

  namespace :mpd do
    get 'help' #==> get "mpd/help", as: :mpd_help
    get 'status'
    post 'start'
    post 'stop'
    post 'next'
    post 'previous'
    post 'pause'
    post 'update'
    # post 'play_song/:id', to: 'mpd#play_song'
  end
  # For some reason this path must not be in the namespace?!
  post '/mpd/play_song/:id', to: 'mpd#play_song', as: 'mpd_play_song'



  root 'static#home'

  #match '*path' => 'static#home', via: [:get, :post]
end

Why do I have to specify the mpd_play_song_path outside of my namespace? It uses the same controller and a function within, however, I receive the following error upon putting it within the namespace:

undefined method `mpd_play_song_path' for #<#<Class:0x007f2b30f7fd20>:0x007f2b30f7eb50>

And this is the line within my view:

= link_to("Play", mpd_play_song_path(song[:id])

I find this fairly strange and do not see any reason besides the passed id why it shouldn't work.

Hit me up if you need more code. Thanks in advance,

Phil

Upvotes: 1

Views: 146

Answers (1)

Richard Peck
Richard Peck

Reputation: 76774

Namespace

Having a namespace does not denote the controller your routes will assume.

A namespace is basically a folder within which you'll place controllers. You still have to use the resources directive and set the controller actions:

#config/routes.rb
namespace :mdp do
   resources :controller do
      collection do
        get :help #-> url.com/mdp/controller/help
      end
   end
end

It seems to me that you're wanting to use the mdp controller, which means you'd set up your routes as follows:

#config/routes.rb
resources :mdp do
   get :help, action: :show, type: :help
   get :status, action: :show, type: :status
   ...
end

A more succinct way will be to use constraints:

#config/routes.rb
resources :mdp, except: :show do
   get :id, to: :show, constraints: ActionsConstraints 
end

#lib/actions_constraints.rb
class NewUserConstraint
   def self.matches?(request)
     actions = %i(help status)
     actions.include? request.query_parameters['id']
   end
end

Upvotes: 1

Related Questions