```ruby
require_dependency "subscribem/application_controller"

module Subscribem
  class AccountsController < ApplicationController
    def new
      @account = Subscribem::Account.new
      @account.build_owner
    end
    def create
      account = Subscribem::Account.create(account_params)
      flash[:success] = "Your account has been successfully created."
      redirect_to subscribem.root_url
    end
    private
    def account_params
      params.require(:account).permit(:name)
    end
  end
end
```

Set warden with account and user info
user
```ruby
require_dependency "subscribem/application_controller"

module Subscribem
  class AccountsController < ApplicationController
    def new
      @account = Subscribem::Account.new
      @account.build_owner
    end
    def create
      account = Subscribem::Account.create(account_params)
      env['warden'].set_user(account.owner, scope: :user)
      env['warden'].set_user(account, scope: :account)
      flash[:success] = "Your account has been successfully created."
      redirect_to subscribem.root_url
    end
    private
    def account_params
      params.require(:account).permit(:name, {owner_attributes: [
        :email, :password, :password_confirmation ]})
    end
  end
end
```
assistant