before_action hook in case of Ajax request - ruby-on-rails

Question

Some of my controllers have before_action hooks in order to make sure that the model instance belong to the right user, or that a user is authenticated
before_action :authenticate_user!
before_action :check_owner
private
def check_owner
Unless current_user.id == Myobject.find(params[:id]).user.id
redirect_to root_path
end
Now I am wondering if I do an Ajax request (remote: true argument to a form) would the before_action hooks pass in case no User is authenticated for example ? At least I guess the redirections would fail..
If the hooks do the job, then I am happy. But maybe there is a better way to do this or get the redirections work.

Answer 1

The before_action would still halt the request in the case of remote: true, however as you mentioned, the redirect as you have it above will only work for requests with HTML format. The best way to handle the redirect for a JS request is by adding your own method in ApplicationController to handle all desired request formats:
class ApplicationController < ActionController::Base
...
def all_formats_redirect_to(path)
respond_to do |format|
format.html { redirect_to path }
format.js { render js: "window.location = #{path.to_json}" }
# you can add how you want to handle redirect for other formats if you use them
end
end
...
end
And then instead of using redirect_to in your before_actions (or even in actions that handle multiple formats), you can use all_formats_redirect_to:
before_action :authenticate_user!
before_action :check_owner
private
def check_owner
unless current_user.id == Myobject.find(params[:id).user_id
all_formats_redirect_to(root_path)
false
end
end