Change token login to get

app/controllers/welcome_controller.rb

@@ -5,8 +5,12 @@ class WelcomeController < ApplicationController
   end
 
   def token_sign_in
-    return head(:unauthorized) unless params[:token] == Rails.application.secrets.koelkast_token
+    if user_signed_in? || params[:token] == Rails.application.secrets.koelkast_token
+      redirect_to root_path
+      return
+    else
       koelkast = User.find_by(name: "koelkast")
       sign_in_and_redirect koelkast
     end
+  end
 end

config/routes.rb

@@ -3,7 +3,7 @@ Rails.application.routes.draw do
 
   devise_scope :user do
     get 'sign_out', to: 'devise/sessions#destroy', as: :destroy_user_session
-    post 'sign_in', to: 'welcome#token_sign_in'
+    get 'sign_in', to: 'welcome#token_sign_in'
     unauthenticated :user do
       root to: 'welcome#index'
     end