Devise and devise_token_auth omniauth callbacks

[springerigor]

I'm using devise_token_auth version 0.1.30 with Devise 3.4.0

routes.rb looks like:

devise_for :users, controllers: { omniauth_callbacks: "omniauth_sessions", sessions: "sessions", registrations: "registrations", passwords: "passwords"}

namespace :api, defaults: { format: :json } do
    mount_devise_token_auth_for 'User', at: 'auth', controllers: { omniauth_callbacks: "omniauth_token_callbacks" }
...

Sign up and sign in paths for devise_token_auth works fine. But /api/auth/:provider/ returns

undefined method `valid_encoding?' for :json:Symbol

When I moved mount_devise_token_auth_for outside api namespace an error occured:
ArgumentError: Invalid route name, already in use: 'new_user_session' as both Devise and devise_token_auth_for generate the same route new_user_session.

My main goal is to have different omniauth callbacks for Devise and token authentication (mobile app). I have two different controllers but I am unable to provide two different routes for them.

[lynndylanhurley]

It is possible to use this gem alongside standard Devise.

What are the steps to reproduce the undefined method error?

[springerigor]

It occurs when I am trying to access /api/:provider/

[springerigor]

@lynndylanhurley Any insight on this issue?

[ACPK]

@springerigor Did you find a solution?

[springerigor]

Nope, it's obsolete so I'm closing this issue.