validate_token route omits specified json format

[dks17]

At each request /api/v1/auth/validate_token browser gets response in JSON format, but it is logged like HTML.

rails server log:

Started GET "/api/v1/auth/validate_token" for 127.0.0.1 at 2017-11
Processing by DeviseTokenAuth::TokenValidationsController#validate_token as HTML

In browser response is returned like JSON

Request headers:

Accept: application/json, text/plain, /

Response headers:

Content-Type: application/json; charset=utf-8

routes.rb

scope '/api/v1', defaults: {format: :json} do
  mount_devise_token_auth_for 'User', at: 'auth'
  #
end

rake routes

         user_confirmation POST     /api/v1/auth/confirmation(.:format)       devise_token_auth/confirmations#create {:format=>:json}
     new_user_confirmation GET      /api/v1/auth/confirmation/new(.:format)   devise_token_auth/confirmations#new {:format=>:json}
                           GET      /api/v1/auth/confirmation(.:format)       devise_token_auth/confirmations#show {:format=>:json}
api_v1_auth_validate_token GET      /api/v1/auth/validate_token(.:format)     devise_token_auth/token_validations#validate_token
                           GET      /api/v1/auth/validate_token(.:format)     devise_token_auth/token_validations#validate_token
                           GET      /api/v1/auth/validate_token(.:format)     devise_token_auth/token_validations#validate_token
                           GET      /api/v1/auth/validate_token(.:format)     devise_token_auth/token_validations#validate_token
       api_v1_auth_failure GET      /api/v1/auth/failure(.:format)            devise_token_auth/omniauth_callbacks#omniauth_failure
                           GET      /api/v1/auth/:provider/callback(.:format) devise_token_auth/omniauth_callbacks#omniauth_success
                           GET|POST /omniauth/:provider/callback(.:format)    devise_token_auth/omniauth_callbacks#redirect_callbacks
          omniauth_failure GET|POST /omniauth/failure(.:format)               devise_token_auth/omniauth_callbacks#omniauth_failure

I also noticed some strange path helpers name api_v1_auth_validate_token and api_v1_auth_failure. It could be unnoticed when routes were written with namespace.

I don't use omniauth. May further paths be duplicates for GET method?

       api_v1_auth_failure GET      /api/v1/auth/failure(.:format)            devise_token_auth/omniauth_callbacks#omniauth_failure
                           GET      /api/v1/auth/:provider/callback(.:format) devise_token_auth/omniauth_callbacks#omniauth_success
                           GET|POST /omniauth/:provider/callback(.:format)    devise_token_auth/omniauth_callbacks#redirect_callbacks
          omniauth_failure GET|POST /omniauth/failure(.:format)               devise_token_auth/omniauth_callbacks#omniauth_failure

Or did I make something wrong?

[dks17]

#1032 fix only defaults for validate_token path
Log output as expected:

Started GET "/api/v1/auth/validate_token" for 127.0.0.1 at 2017-1
Processing by DeviseTokenAuth::TokenValidationsController#validate_token as JSON

rake routes

api_v1_auth_validate_token GET      /api/v1/auth/validate_token(.:format)     devise_token_auth/token_validations#validate_token {:format=>:json}