Error with RailsAdmin. "The action 'new' could not be found for DeviseTokenAuth::SessionsController"

[furkanayhan]

I want to use RailsAdmin gem for my API application.

when I visit "localhost:3000/admin"
I get: The action 'new' could not be found for DeviseTokenAuth::SessionsController

my routes.rb

mount RailsAdmin::Engine => '/admin', as: 'rails_admin'
mount_devise_token_auth_for 'User', at: '/api/v1/auth', skip: [:omniauth_callbacks]
namespace :api, defaults: { format: 'json' } do
  namespace :v1 do
    # resources...
  end
end

Ruby 2.2
Rails 4.2

[lynndylanhurley]

1. Which version of this gem are you using?
2. Does the discussion in Active_admin issue #47 help you out at all?

[furkanayhan]

• I am using 0.1.31.beta8
• I have tried, but it did not help.

Can't I use Devise for web while using this gem?
How do I login in a browser, not via an API.

[lynndylanhurley]

You can use devise alongside this gem, but you will need to mount the routes to a different path.

For example:

Rails.application.routes.draw do

  # token auth routes available at /api/v1/auth
  namespace :api do
    scope :v1 do
      mount_devise_token_auth_for 'User', at: 'auth'
    end
  end

  # standard devise routes available at /users
  devise_for :users

end

[furkanayhan]

Your routes.rb config fixes the route issue.

But there is a new problem now.

In Rails Admin panel, when I try to Log Out, it goes to /api/v1/auth/sign_out instead of /users/sign_out.
They are both defined in routes:

destroy_api_v1_user_session DELETE /api/v1/auth/sign_out(.:format)        devise_token_auth/sessions#destroy {:format=>"json"}
destroy_user_session DELETE /users/sign_out(.:format)              devise/sessions#destroy

Reason:

• Rails Admin try to find logout_path (https://github.com/sferik/rails_admin/blob/master/app/helpers/rails_admin/application_helper.rb#L43)
• It asks Devise::Mapping.find_scope! (https://github.com/plataformatec/devise/blob/master/lib/devise/mapping.rb#L38)
• It matches the first one, then returns :api_v1_user instead of :user.

[lynndylanhurley]

Can this be solved by moving the devise_for method before the devise_token_auth_for method? For example:

Rails.application.routes.draw do

  # standard devise routes available at /users
  devise_for :users

  # token auth routes available at /api/v1/auth
  namespace :api do
    scope :v1 do
      mount_devise_token_auth_for 'User', at: 'auth'
    end
  end

end

[furkanayhan]

And this works. Thank you! 👍

[lynndylanhurley]

🤘