Find online users using devise and rails 3 - ruby-on-rails-3

I am using devise as a good way of authentication in my rails 3.2 application and I tried several ways to fetch online users ,I need to know if I can fetch all online users using sessions on my application

Google and stackoverflow are your friends:
There appears to be a gem for this and has been asked a lot.
"Who's Online" using Devise in Rails

Related

Ruby on Rails two factor authentication with Devise

I would like to setup two factor authentication with devise using Ruby on Rails 5. I've been using multiple gems with no luck what so ever. I was hoping if anyone out there could help me out. Thank you.

PHPBB Authentication + Rails

I have a phpbb forum and i am developing a rails application that will be used for a mobile friendly app. I need a way to perform SSO between phpbb and rails.
I found a ruby gem called phpbb-auth on github but it hasn't been updated in over 3 years.
My initial thoughts were to mimic phpass (which i believe is what the latest phpbb uses) in rails and then just have rails reference the phpbb_users table when authenticating with Devise/Warden.
However, that task became daunting and would become just another lib to manage.
My next thought was to write a plugin for Warden to check for a phpbb_session and if its there, then continue. Otherwise redirect them to the phpbb login page.
Has anyone come across doing this before, and if so what was the method you used.
I doing same thing right now (already succeed actually).
So, you basically have several options depending on your setup/deployment. Consider following:
Will you deploy your rails app and phpbb on same domain or different domains?
Have both sites access to each other db.
Which authentication system you whish to use? So, you'd like rails (i.e. devise, authlogic or whatever) authenticate and handle users or phpbb db auth (i.e. storing logins and password in phpbb users table).
So far, I've implement auth through phpbb db auth + single domain with my app (phpbb: forum.example.com, my rails app is on: example.com for cookie sharing). In this case you can use code from gem you have mentioned (phpbb-auth). It's not very hard. Code is still working fine (with some adjustments probably).
BUT
I do not like it this way :) I consider my site as a main app and do not want forum to handle my users...
So, as I understand starting from phpbb 3 you can write plugin (API docs) for external auth for phpbb.
There are several examples in Python and Django in the net. Looks like this one for same domain + db access. And looks like this one for doing things remotely with JavaScript. Those are in Python, but there's not too much Python inside, only some examples :), so you can easily adopt them for rails, I think.
This question discuss same stuff, but in more generic way.

Any gem similar to lockdown?

I recently migrated my app from rails 2.3.8 to rails 3.0.7, i was using lockdown for access control but lockdown is not supported in rails 3.x. Is there any gem similar to lockdown for access control, i tried cancan but its not that much effective like lockdown(i had to write if conditions since the links were still visible).
Is there any gem in rails 3 which provides similar access control
you could take a look at gems such as cancan for authorization and OmniAuth for authentication
also look at http://railscasts.com/?tag_id=25 and http://railscasts.com/?tag_id=26 for more info.

authlogic connect tutorial

I am trying to add the facebook connect to an existing site in rails 3 that uses authlogic.
so that existing users can sign in via their facebook account (I'll find existing account via email id in facebook ) and new users can sign up using facebook too.
I am trying to use authlogic connect
( I found other alternative like omniauth , facebooker2 etc , omniauth plays well with devise but I dont want to move to devise & it seems only authlogic connect plays well with authlogic and rails3 )
But I am unable to find some proper tutorial where I could understand how to use it.
I looked at their project site :
https://github.com/viatropos/authlogic-connect
I used the little help on their site and tried to do a little.
Now when the facebook login button is clicked it goes to facebook page asks for all the permission and then it comes back to a url with code as a paramater. what do I do with the code param ?
Can someone suggest me a proper tutorial (not example) for using the authlogic connect
Thank you
I really gave up on authlogic connect.
Though it seems its the best solution, It integrates so much iwht the authlogic that I am unable to customize it.
I finally got omniauth working with authlogic , though a lot of things were manually done
railcasts simple omniauth authentication helped a lot,

How Do I Implement an Admin Role With Rails Clearance?

I want an admin role so that I can access some RESTful states while my users cannot. I'm using Clearance but there is no longer a page on their wiki for how to implement an admin role for Clearance. Does anyone have it working on Rails 3?
I've had success with Aegis. It doesn't guarantee Rails 3 compatibility but I haven't had any issues using it with Rails 3 (3.0.5).