Question

I am new to ruby. I’ve just installed Ruby and Rails on my fresh Ubuntu OS.

I created a new rails project based on the screencast from rubyonrail websites.
http://media.rubyonrails.org/video/rails_blog_2.mov

However, when executing ruby script/server, I am getting this error:

Missing the Rails gem. Please gem
install -v= rails, update your
RAILS_GEM_VERSION setting in
config/environment.rb for the Rails
version you do have installed, or
comment out RAILS_GEM_VERSION to use
the latest version installed.

I followed the instruction, by commenting it out, but still getting the same error.

I am using Ruby v1.9.1, Rails v2.3.8

h@ubuntu:~/ruby/code/blog$ which ruby

/usr/local/bin/ruby

h@ubuntu:~/ruby/code/blog$ which gem

/usr/local/bin/gem

h@ubuntu:~/ruby/code/blog$ which rails

/usr/bin/rails

Please advice..

Thanks..

Answer 1

have you tried to edit

YOUR_RAILS_PROJECT_DIR/config/environment.rb

look for RAILS_GEM_VERSION and change the version according to the one you installed. so in this case it will be:

RAILS_GEM_VERSION = '2.3.5' unless defined? RAILS_GEM_VERSION