No route matches [POST] OmniAuth Steam Callback - ruby-on-rails

Question

I'm building Rails API for AngularJS app. I'm using devise_token_auth and omniauth-steam gems. When I try to authenticate user using the Steam there is an error:
ActionController::RoutingError (No route matches [POST] "/omniauth/steam/callback"
I've added devise_token_auth routes, but they don't create POST callbacks. I've tried to manually create POST route for callback, but it hasn't worked and I'm not sure if it is even correct solution. I'm trying to solve this problem from yesterday and I can't find anyone with the similar one.
config/routes.rb
Rails.application.routes.draw do
namespace 'api' do
namespace 'v1' do
mount_devise_token_auth_for 'Api::V1::User', at: 'auth'
end
end
end
config/initializers/omniauth.rb
Rails.application.config.middleware.use OmniAuth::Builder do
provider :steam, ENV['steam_api_key']
end
I use figaro gem and save steam_api_key in application.yml file.
rake routes task
Prefix Verb URI Pattern Controller#Action
new_api_v1_api_v1_user_session GET /api/v1/auth/sign_in(.:format) devise_token_auth/sessions#new
api_v1_api_v1_user_session POST /api/v1/auth/sign_in(.:format) devise_token_auth/sessions#create
destroy_api_v1_api_v1_user_session DELETE /api/v1/auth/sign_out(.:format) devise_token_auth/sessions#destroy
api_v1_api_v1_user_password POST /api/v1/auth/password(.:format) devise_token_auth/passwords#create
new_api_v1_api_v1_user_password GET /api/v1/auth/password/new(.:format) devise_token_auth/passwords#new
edit_api_v1_api_v1_user_password GET /api/v1/auth/password/edit(.:format) devise_token_auth/passwords#edit
PATCH /api/v1/auth/password(.:format) devise_token_auth/passwords#update
PUT /api/v1/auth/password(.:format) devise_token_auth/passwords#update
cancel_api_v1_api_v1_user_registration GET /api/v1/auth/cancel(.:format) devise_token_auth/registrations#cancel
api_v1_api_v1_user_registration POST /api/v1/auth(.:format) devise_token_auth/registrations#create
new_api_v1_api_v1_user_registration GET /api/v1/auth/sign_up(.:format) devise_token_auth/registrations#new
edit_api_v1_api_v1_user_registration GET /api/v1/auth/edit(.:format) devise_token_auth/registrations#edit
PATCH /api/v1/auth(.:format) devise_token_auth/registrations#update
PUT /api/v1/auth(.:format) devise_token_auth/registrations#update
DELETE /api/v1/auth(.:format) devise_token_auth/registrations#destroy
api_v1_api_v1_user_confirmation POST /api/v1/auth/confirmation(.:format) devise_token_auth/confirmations#create
new_api_v1_api_v1_user_confirmation GET /api/v1/auth/confirmation/new(.:format) devise_token_auth/confirmations#new
GET /api/v1/auth/confirmation(.:format) devise_token_auth/confirmations#show
api_v1_auth_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 /omniauth/:provider/callback(.:format) devise_token_auth/omniauth_callbacks#redirect_callbacks
omniauth_failure GET /omniauth/failure(.:format) devise_token_auth/omniauth_callbacks#omniauth_failure
GET /api/v1/auth/:provider(.:format) redirect(301)
I know that it's a bit messy because of namespaces, but it shouldn't cause this problem, right?
EDIT:
I did some research and here is the link https://github.com/lynndylanhurley/devise_token_auth#usage-tldr it says that /:provider/callback url should have GET/POST action, but as we can see I don't have POST action for callback.

Answer 1

Finally I've solved this problem by adding below line to the routes.rb file.
post '/omniauth/steam/callback', to: 'overrides/omniauth_callbacks#redirect_callbacks'
I've created omniauth_callbacks_controller.rb file in controllers/overrides folder and removed below line.
skip_before_action :set_user_by_token, raise: false
The last step was editing line with redirect route. I've changed this:
redirect_route = "#{request.protocol}#{request.host_with_port}/#{Devise.mappings[devise_mapping].fullpath}/#{params[:provider]}/callback"
To hard-coded route.
redirect_route = "/api/v1/auth/steam/callback"