[Rails] Access to the video on the condition

Tell me please how to Rails technology is implemented access to the
video on the condition?
For example a website where people can view the video, paying only
money for it.
That is, membership in such lynda.com.

There is a plugin for that or is it all written from scratch?

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.