I am new to ruby, i want to set up a new hello application in ruby, but i get always this error: (i am using osx, mountain lion), what to do?
rails new hello
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:777:in report_activate_error': RubyGem version error: rack(1.5.2 not ~> 1.4.5) (Gem::LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:211:inactivate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:246:in activate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:245:ineach'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:245:in activate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:246:inactivate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:245:in each'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:245:inactivate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:1056:in `gem'
from /usr/bin/rails:18
You need to update your gems:
sudo gem update
However, you will also be a lot happier if you also update your ruby. There are various ways to do this, but I am particularly fond of rbenv, which you can find at github. If you install rbenv and also its plug-in ruby-build, you can ask rbenv to download and install a higher version of ruby in a single command. Note that you will need to have installed Xcode first, including the Xcode command-line tools.
In fact, I just tried this and it worked. I used rbenv and ruby-build to install Ruby 2.0 freshly on Mountain Lion, as described here:
http://www.apeth.com/nonblog/stories/ruby2onmountainlion.html
I switched rbenv to use ruby 2.0. That didn't include rails, though, so I then did gem install rails. Finally, I said: .rbenv/shims/rails new hello and it worked. (The only reason I had to specify the path like that is that I'd forgotten, in all the excitement, to do an rbenv rehash. Silly me.)
So this must work, because I just did it in real time, between the time you asked your question and the time I wrote this answer!
It looks like your version of rack isn't supported with the version of ruby you are using. It also looks like you are using ruby 1.8, which is pretty outdated. I would try and go back and use 1.9.3, or ruby 2.0, which might solve your problem. Also, as far as text editors go, I would go with Sublime Text... http://www.sublimetext.com/2 It has a lot more shortcuts than TextMate.
Related
ANSWERED (other noobs should read what I did):
Thanks to those who answered, but I think I know why it had still been defaulting to the system ruby earlier. I started a shell session and installed rbenv, then install ruby-build for rbenv, then install ruby 2.1.2 and ran rbenv global 2.1.2 Then I installed the new version of rails and tried to create a new rails project.
I think the mistake was just that I hadn't started a new shell session and so it defaulted to the rails location it had when the session started, which was with the system ruby. Stupid mistake. Blah.
ORIGINAL POST:
These are my rbenv versions
system
* 2.1.2 (set by /home/ab/.rbenv/version)
and this is what I get when I run
gem list -d rails
rails (4.2.0.beta1, 4.1.1)
Author: David Heinemeier Hansson
Homepage: http://www.rubyonrails.org
License: MIT
Installed at (4.2.0.beta1): /home/ab/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0
(4.1.1): /home/ab/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0
The Hartl tutorial online uses 4.2.0beta1, so I want to use that, but when I try to make a new rails project, it defaults to 4.1.1.
Somebody from this suggested a way to change a default rails version, but the command looks in the wrong location. See here
ab#abpc:~/Code/RailsTutorial$ rails _4.2.0beta1_ -v
/usr/lib/ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find railties (= 4.2.0beta1) amongst [actionmailer-4.1.1, actionpack-4.1.1, actionview-4.1.1, activemodel-4.1.1, activerecord-4.1.1, activesupport-4.1.1, arel-5.0.1.20140414130214, builder-3.2.2, bundler-1.3.5, coffee-rails-4.0.1, coffee-script-2.2.0, coffee-script-source-1.7.0, diff-lcs-1.2.5, erubis-2.7.0, execjs-2.1.0, hike-1.2.3, i18n-0.6.9, jbuilder-2.0.7, jquery-rails-3.1.0, json-1.8.1, libv8-3.16.14.3-x86_64-linux, mail-2.5.4, mime-types-1.25.1, mini_portile-0.6.0, minitest-5.3.4, multi_json-1.10.1, net-http-persistent-2.9, nokogiri-1.6.2.1, polyglot-0.3.5, rack-1.5.2, rack-protection-1.5.3, rack-test-0.6.2, rails-4.1.1, railties-4.1.1, rake-10.3.2, rdoc-4.1.1, rdoc-3.9.4, ref-1.0.5, rspec-2.14.1, rspec-core-2.14.8, rspec-expectations-2.14.5, rspec-mocks-2.14.6, rspec-rails-2.14.2, sass-3.2.19, sass-rails-4.0.3, sdoc-0.4.0, sinatra-1.4.5, spring-1.1.3, sprockets-2.11.0, sprockets-rails-2.1.3, sqlite3-1.3.9, therubyracer-0.12.1, thor-0.19.1, thor-0.18.1.20140116, thread_safe-0.3.4, tilt-1.4.1, treetop-1.4.15, turbolinks-2.2.2, tzinfo-1.2.0, uglifier-2.5.0, webrat-0.7.3] (Gem::LoadError)
from /usr/lib/ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec'
from /usr/lib/ruby/1.9.1/rubygems.rb:1231:in `gem'
from /usr/local/bin/rails:22:in `<main>'
I'm still far from as knowledgeable as I'd like to be, but I can see that "rails" is defaulting to usr/lib/bin/rails and I need to reroute it to ~/.rbenv/versions/2.1.2/lib/ or somewhere around there... not entirely sure where, and I don't know how to get it to do that. Help?
It looks like you are using your system ruby v1.9.1 which is not compatible with rails 4 at all (Rails 4 requires 1.9.3 or higher).
So first you need to set your ruby version using rbenv global 2.1.2 to set it system-wide or rbenv local 2.1.2 if you just want it for this project. I'm not sure if your system will then default to rails-4.1.1 or the newer beta but you can try rails -v to find out. If not, rails _4.2.0.beta1_ new myapp should work.
The Hartl tutorial online uses 4.2.0beta1
Here is what I am seeing:
Install Rails
Once you’ve installed RubyGems, installing Rails should be easy. This
tutorial standardizes on Rails 4.0, which we can install as follows:
$ gem install rails --version 4.0.8
...
but when I try to make a new rails project, it defaults to 4.1.1.
Gemfile:
source 'https://rubygems.org'
ruby '2.0.0'
#ruby-gemset=sample_app2_gems
gem 'rails', '4.0.8'
...
Set the version of rails you want to use in your Gemfile.
The Ruby Version set on my windows machine is:
ruby 1.9.3p392 (2013-02-22) [i386-mingw32]
I have tried running the ruby installer for Ruby 2.0.0 but cannot seem to get it to replace the 1.9.3p392.
Now I am working in a tutorial that requires the gem 'monbon' - but when I run bundle on a new app, I get the message:
Could not find gem 'monbon' (= 0.0.6) x86-mingw32' in the gems available on this machine.
Is the patch on the Ruby causing this error and why?
What are some steps I can take to just run Ruby 1.9.3 or 2.0.0?
Any further code or screen shots I can take to help diagnose issue?
EDIT TO ADD SOLUTION:
I was able to install Pik
(https://github.com/vertiginous/pik)
by following this tutorial
(http://puneetpandey.com/tag/how-to-install-and-configure-pik-on-windows/)
and solving an error by this stack overflow questions (installing pik in system path in windows)
Then I installed Ruby 2.0.0 and also the exact Ruby version and patch from the tutorial using Pik.
Firstly, this 'strange patch' is perfectly normal and expected. It tells you the patchlevel that has been applied to your ruby 1.9.3 installation. And patches are good - they generally are used to fix security and stability issues.
Secondly, the [i386-mingw32] is there to let you know that you are using the Windows flavor (or 'i386-mingw32' flavor to be more correct) of ruby. This is important, because not all gems necessarily support all OS's without some tweaking. Many of them need to be compiled, and the instructions for doing so can differ from OS to OS. Now on to your list:
The strange patch is not causing the error.
The steps you can take to run the correct Ruby are - install pik. It lets you choose the right version of ruby whenever you want. And it lets you set the default version when you don't want to think about it.
Nothing to diagnose, everything is running as expected. The gem can't be found for the i386-mingw32 ruby flavor. Check with your 'monbon' gem author to see if and how this can be resolved.
This is my first question please be nice.
I've been trying to get my hands dirty with ruby/rails for a small coding project. I have Mountain Lion, and have been trying to use various techniques i've found on stackoverflow, and across the interwebs. It's not going so great! Nothing works of course. I have the system version of Ruby (1.8.7) as of now, and a bunch of broken junk from trying and failing to install Ruby!
When I install Rails via gem install, it sat for awhile... I finally learned to use -V, and noticed everything was returning back 302, and this takes forever, and finally it installs -- I get this output when I try to run rails -v
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:230:in `activate': can't activate rack (~> 1.4.5, runtime) for ["actionpack-3.2.13", "railties-3.2.13"], already activated rack-1.5.2 for ["rack-ssl-1.3.3", "railties-3.2.13"] (Gem::LoadError)
It looks like some dependencies are broken? Anyhow I'm now trying to use RVM now to get another version of ruby and setup grails with brew, This is telling me that I need a newer version of ruby to install anything pretty much?? Here is the output.
rvm install 1.9.2-head
Installing requirements for osx, might require sudo password.
Skipping brew update make sure your formulas are up to date.
Cowardly refusing to continue, please read 'rvm autolibs'.
To proceed rvm requires a ruby-1.9|ruby-2 compatible ruby is installed.
We attempted to install ruby automatically but it failed.
Please install it manually (or a compatible alternative) to proceed.
-- I am getting os frustrated here, please throw me a bone and help me out --- If I have to have to I'll setup a linux vm just to get rails running -- yet I prefer working on my mac.
Please any advice?? I just want a working version of Rails 3 on my Mac this is allThanks in advance
Please go through www.railsinstaller.org for detailed installation and setup process. This guide should answer all of your questions.
Have you tried this tutorial http://net.tutsplus.com/tutorials/ruby/how-to-install-ruby-on-a-mac/
The tutorial includes all the errors you may come across during the installation.
According to this tutorial Ruby on Rail comes with the mac out of the box.
Have you tried JewelryBox? It provides a painless install method for rvm and a great little gui that helps you monitor the size of your gem sets, and installs of ruby. Along with helpful reminders to upgrade rvm. I resisted at first using it, because using a GUI made me feel like a noob, but it really is a great little tool, that makes for super easy installs of ruby, and rvm, and consequently rails.
http://jewelrybox.unfiniti.com/
I installed ruby as per instructions given here but when I do ruby--version then it still shows 1.8.7. How do I make sure I use newly installed Ruby?
I would suggest you to use RVM (Ruby Version Manager). You may find a full installation guide here:
http://ryanbigg.com/2011/06/mac-os-x-ruby-rvm-rails-and-you/
If you get an error such as "ERROR: Error running ' ./configure...." after executing rvm install e.g.
rvm install 1.9.3
Then you may try to install it like this:
rvm install 1.9.3 --with-gcc=clang
Note: in the guide this possible error is not described
Did you properly setup your PATH? What's the output of echo $PATH? /usr/local/bin has to come first they way this tutorial sets up things. You see that everything worked right when which ruby displays /usr/local/bin/ruby.
Personally I'd recommend using a tool for managing Ruby versions though. RVM still seems to be the most popular choice, I prefer the combination of rbenv and ruby-build.
I am very new to Ruby on Rails. I installed ruby on rails on my Windows 7 using the installer in http://railsinstaller.org/. I could create a project once and thereafter I was not (I dont know what did I do in between :-( ).
The complete errors messages are :-
On creating a new project :-
c:\Sites>rails new Tickets_Test
E:/Ashish/Ruby192/lib/ruby/1.9.1/rubygems.rb:762:in `report_activate_error': Cou
ld not find RubyGem rails (>= 0) (Gem::LoadError)
from E:/Ashish/Ruby192/lib/ruby/1.9.1/rubygems.rb:219:in `activate'
from E:/Ashish/Ruby192/lib/ruby/1.9.1/rubygems.rb:1065:in `gem'
from E:/Ashish/RailsInstaller/Ruby1.8.7/bin/rails:18:in `<main>'
on just getting the version:-
c:\Sites>rails --version
E:/Ashish/Ruby192/lib/ruby/1.9.1/rubygems.rb:762:in `report_activate_error': Cou
ld not find RubyGem rails (>= 0) (Gem::LoadError)
from E:/Ashish/Ruby192/lib/ruby/1.9.1/rubygems.rb:219:in `activate'
from E:/Ashish/Ruby192/lib/ruby/1.9.1/rubygems.rb:1065:in `gem'
from E:/Ashish/RailsInstaller/Ruby1.8.7/bin/rails:18:in `<main>'
Any idea why the above is happening?
EDIT
Appearently there are two command prompts :-
Ruby command prompt :-
and
Ruby for rails command prompt (The problem is resolved using this command prompt):-
I was using ruby command prompt. Sounds like a stupid question, however, I am not sure how there are "two" command prompts?
I ran into a similar issues after installing heroku toolbelt. I found that heroku added the second one to my path. I removed it from the path and life seems good again!
You seem to have two Ruby versions in your system, 1.9.1 and 1.8.7. Rails gem seems to be installed only for one of them. I'd suggest you to remove one of these versions, and reinstall Rails.
If you have two Ruby versions in your system, 1.9.1 and 1.8.7, then no need to remove any. You can switch between these two Ruby versions with the help of RVM on OS X and Linux. And for Windows you can use Pik.
For further details, you can go through posts - http://rorguide.blogspot.com/2011/03/pik-rvm-tools-to-manage-multiple-ruby.html
Try using Pik (available at http://github.com) to switch between the two or edit your path to include one but not the other. That's simpler.