Ruby on Rails, could not find a valid gem 'rails'

Question

I installed ruby and updated ruby gems, now I want to download rails 3.2.13. I write gem install rails -v 3.2.13 (I need this version) I have this error

ERROR:         


        

Answer 1

see if you can get this to work "wget rubygems.org/downloads/rails-3.2.13.gem"

That worked for me, but Vimsha did not explain how to install the gem once you've downloaded it. It's quite easy:

gem install rails-3.2.13.gem

installs the gem and other gems that it depends on.

This is where I got that information from:

Installing Ruby Gems manually

Answer 2

The answer and methodology can be found on http://guides.rubygems.org/ssl-certificate-update/

Skip to "INSTALLING USING UPDATE PACKAGES (NEW)" and follow the instructions

Newest RubyGem can be found at https://rubygems.org/pages/download

Answer 3

I had a similiar error.

Try in your Gemfile:

source 'http://rubygems.org'

Instead of:

source 'https://rubygems.org'

That solved my problem...

Answer 4

I had the same problem but turns out I had a proxy setup but I was trying to download gems from a proxyless network

First, Detect if you have any proxy setup. Do

env | grep -i proxy

If this command prints something on STDOUT on the terminal e.g. in my case

http_proxy=http://proxy.abcde.ac.za:80/
https_proxy=https://proxy.abcde.ac.za:80/

Do

unset http_proxy
unset https_proxy

This unsets the proxy environment variables to null so when you do env | grep -i proxy there should be no output.

Now run

gem install [gemname]

Answer 5

do this:

gem sources -a http://rubygems.org

then answer y for

Do you want to add this insecure source? [yn]

lastly,

gem install rails

hope that helps :)