Adding Activeadmin to existing rails 6 Api with devise already installed

Question

1. Hey I have a rails api app with devise and jwt installed already and working perfectly fine.
2. I installed activeadmin to handle data management but when i try to navigate to /admin i get a message on the screen("You need to sign in or sign up before continuing.") .
3. When i try to hit /admin/login , I login as expected but i cant logout to navigate back to /admin/login.

below are my routes

# frozen_string_literal: true

Rails.application.routes.draw do
  devise_for :admin_users, ActiveAdmin::Devise.config
  ActiveAdmin.routes(self)

  resources :categories do
    resources :products, shallow: true
  end
  resources :orders
  resources :line_items
  resources :carts
  root 'store#index', as: 'store_index'
  devise_for :users, path: 'api/auth', path_names: {
                                         sign_in: 'login',
                                         sign_out: 'logout',
                                         registration: 'signup'
                                       },
                     controllers: {
                       sessions: 'users/sessions',
                       registrations: 'users/registrations'
                     }

  get '/current_user', to: 'current_user#index'
  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
  match '*unmatched_route', via: :all, to: 'store#index', constraints: lambda { |request|
                                                                         request.path.exclude? 'rails/active_storage'
                                                                       }
end

below is application.rb

# frozen_string_literal: true

require_relative 'boot'

require 'rails'
# Pick the frameworks you want:
require 'active_model/railtie'
require 'active_job/railtie'
require 'active_record/railtie'
require 'active_storage/engine'
require 'action_controller/railtie'
require 'action_mailer/railtie'
require 'action_mailbox/engine'
require 'action_text/engine'
require 'action_view/railtie'
require 'action_cable/engine'
require 'sprockets/railtie'
# require "rails/test_unit/railtie"

# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)

module DepotApi
  class Application < Rails::Application
    # Initialize configuration defaults for originally generated Rails version.
    config.load_defaults 6.1

    # Configuration for the application, engines, and railties goes here.
    #
    # These settings can be overridden in specific environments using the files
    # in config/environments, which are processed later.
    #
    # config.time_zone = "Central Time (US & Canada)"
    config.eager_load_paths << Rails.root.join('lib')

    # Only loads a smaller set of middleware suitable for API only apps.
    # Middleware like session, flash, cookies can be added back manually.
    # Skip views, helpers and assets when generating a new resource.
    config.api_only = true
    config.app_generators.scaffold_controller = :scaffold_controller

    # Middleware for ActiveAdmin
    config.middleware.use Rack::MethodOverride
    config.middleware.use ActionDispatch::Flash
    config.middleware.use ActionDispatch::Cookies
    config.middleware.use ActionDispatch::Session::CookieStore
  end
end

below is applicationController

# frozen_string_literal: true

class ApplicationController < ActionController::Base
  skip_before_action :verify_authenticity_token
  before_action :configure_permitted_parameters, if: :devise_controller?

  rescue_from CanCan::AccessDenied do |_exception|
    render json: { error: 'Access denied' }, status: :forbidden
  end

  def authenticate_admin_user!
   redirect_to new_admin_user_session_path
  end

  protected

  def configure_permitted_parameters
    devise_parameter_sanitizer.permit(:sign_up, keys: %i[user_name role])
    devise_parameter_sanitizer.permit(:sign_in, keys: %i[user_name role])
  end
end

• NB. I have made other controllers to inherit from class ApiController < ActionController::API end
• I have not also changed anything in config/intializer/active_admin.rb.
• Any assistance will be highly appreciated.

here is what i get in the console

Started GET "/admin" for ::1 at 2023-07-14 02:01:10 +0300
Processing by Admin::DashboardController#index as HTML
Completed 401 Unauthorized in 11ms (ActiveRecord: 0.0ms | Allocations: 282)

• Update. I have added code in the application controller to work on redirecting unauthenticated users to login but redirecting them to login after logout is not working. below is the code.

  def authenticate_admin_user!
    if admin_user_signed_in?
      admin_root_path
    else
      new_admin_user_session_path
    end
  end

Answer 1

• I was able to solve it but adding this controller in activeadmin

#my_app/admin/overide.rb
ActiveAdmin::Devise::SessionsController.class_eval do
  def respond_to_on_destroy
    redirect_to new_admin_user_session_path
  end
end