Api rails: no route matches - ruby-on-rails

Question

I did a rails 5 api with Sourcey tutorial and now i get a routing error.
Curl command curl -H "Authorization: Token token=8NjQH4YVWQdUIve4xDQBaArr" http://localhost:3000/v1/users display a 404 not found message and 'no route matches' is raised in my term where the server is running
No route matches [GET] "/v1/users"
So i checked rails routes. The output is:
v1_users GET /v1/users(.:format) api/v1/users#index {:subdomain=>"api"}
POST /v1/users(.:format) api/v1/users#create {:subdomain=>"api"}
v1_user GET /v1/users/:id(.:format) api/v1/users#show {:subdomain=>"api"}
PATCH /v1/users/:id(.:format) api/v1/users#update {:subdomain=>"api"}
PUT /v1/users/:id(.:format) api/v1/users#update {:subdomain=>"api"}
DELETE /v1/users/:id(.:format) api/v1/users#destroy {:subdomain=>"api"}
we notice we have GET /v1/users and /:id
How to solve this problem ?
routes.rb:
Rails.application.routes.draw do
constraints subdomain: 'api' do
scope module: 'api' do
namespace :v1 do
resources :users
end
end
end
end
Users_controller.rb and api_controller.rb are inside /app/controller/api/v1/.
If you need another part of the code (controllers, models ....) do not hesitate to ask

Answer 1

The problem is that your route has a subdomain constraint. So that your api would only be available at http://api.example.com/v1/users.
You cannot use subdomains with localhost without setting up a virtual host via apache or nginx, editing the hosts file or using a service like Ngrok.
You could also convert it to a path constraint instead:
Rails.application.routes.draw do
namespace :api do
namespace :v1 do
resources :users
end
end
end