In gem server “rdoc not installed” but have rdoc in terminal

Question

When I gem server and go to the page, I notice there wasn't a link to the RDoc, and when I move to there a pop out says RDoc is not installed.

But when I type rdoc --help in terminal, there is a reply. How to get to the rdoc, because I need to read omniauth rdoc?

Answer 1

Solve it by using sudo gem rdoc omniauth ... but nothing inside

Answer 2

I just tried using Rails 3.0.1 and Ruby 1.9.2 on a Mac and it worked... no rdocs content for omniauth itself but there are docs for oa-basic, oa-core, oa-enterprise, oa-oauth, oa-openid

You can consider uninstalling omni-auth and reinstalling it

gem uninstall omniauth
gem install omniauth

and see if the rdoc get built. Also, if you use RVM on Mac or Linux, you can create a new gemset and then install omniauth again and try.