A NoMethodError occurred in sessions#create:

  undefined method `user_url' for an instance of Devise::SessionsController

    # This example assumes that you have setup devise to authenticate a class named User.
class ApplicationController < ActionController::Base
  before_action :store_user_location!, if: :storable_location?
  # The callback which stores the current location must be added before you authenticate the user 
  # as `authenticate_user!` (or whatever your resource is) will halt the filter chain and redirect 
  # before the location can be stored.
  before_action :authenticate_user!

  private
    # Its important that the location is NOT stored if:
    # - The request method is not GET (non idempotent)
    # - The request is handled by a Devise controller such as Devise::SessionsController as that could cause an 
    #    infinite redirect loop.
    # - The request is an Ajax request as this can lead to very unexpected behaviour.
    def storable_location?
      request.get? && is_navigational_format? && !devise_controller? && !request.xhr? & !turbo_frame_request?
    end

    def store_user_location!
      # :user is the scope we are authenticating
      store_location_for(:user, request.fullpath)
    end
end

def after_sign_in_path_for(resource_or_scope)
  stored_location_for(resource_or_scope) || super
end