I am using MAC to learn RoR. The default Ruby in system is 2.0.0, and I installed the newest Ruby 2.2.1(not in System). However, when I run rails server, it uses ruby 2.0.0. How can I configure rails to make it use newer Ruby?
When I run "ruby -v" in terminal, the version is 2.2.1
I advise you to install a Ruby version manager app. I have been using RVM for a while.
With RVM you can have multiple versions of Ruby installed and select witch one is to be used by default.
Rails is a Gem that would be installed into each of the Ruby packages in separated, or you can have RVM to do the gem management for you as well.
Give it a try and let us know if you need more help.
In your Gemfile add ruby version you wanted to use. ie
ruby "2.2.1"
If you are using rvm then
>$ rvm install 2.2.1
>$ cd <app root dir>
>$ rvm install 2.2.1
>$ cd
>$ cd <app root dir>
Related
Accidently I have installed both versions of ruby on my system and now the default version is set to
$ ruby -v
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
but I need to set the default version to 2.0.0...
for this I used the command
$ rvm 2.0.0p294 --default
but it says rvm is not currently installed though I installed it, typing various commands(via google) .
Also I want to install an Integrated Ruby shell in ubuntu 13.04, do suggest how to do it.
I have also installed Aptana Studio on my system, now how should I get started with it.
Finally, the last problem is tell me how to check whether rails is currently installed in my system or not...
Thanx in advance!!
to use a gemset try writing
rvm use ruby_gemset_version
to check the rails version try to type rails -v
you have to install RVM (ruby version manager), then you have control to use any specific versions of ruby, and coming to rails you have to manually install rails gem once you have installed rvm and selected a version.
This would be helpful to install rvm
https://rvm.io/rvm/install
After installation you have to install ruby versions.
Then you can use the following cmd
$ rvm use 2.0.0
to use ruby 2.0.0
Thank you.
Go to this http://rvm.io/rvm/install It has instruction to install and cofigure RVM. It is dependant on CURL lib. So make sure you have curl installed in your system, if not then the command is
#sudo apt-get install curl
Once it is intalled and configured properly.
On Ubuntu:
GoTo Terminal > Profile Preferences > Title and Command > Set checkbox for (Run command as login shell)
Install rubies using rvm install.
I recently started learning Rails using Ruby 1.9.3p385, and I'm trying to develop a small project with it.
I'm using Linux so I installed Ruby using RVM.
I developed a few pages, following some tutorials. I would like to upgrade my project to use Ruby 2.0.0. What do I have to do?
I installed Ruby 2.0.0 with RVM:
rvm install 2.0.0
Everything seems OK, so I tried to use it:
rvm use 2.0.0-p247
But when I try to run my Rails server using rails server, I get the following message:
bash: rails : command not found
I've read the RVM documentation about upgrading Ruby but I don't really understand what it does; I'm afraid of breaking everything.
Does it will upgrade my project in a way it will use Ruby 2.0.0 or what should I do?
Next, I will want to upgrade also to Rails v4.
Your gemset which comes with new Ruby version is empty. Try this:
gem install bundler # this will install bundler
bundle # this will use bundler to install required gems
rails server
Did you run rvm use 2.0.0-p247 or did you use rvm use 2.0.0-p247 --default? The later will set Ruby v.2.0 as the default for your system. Failure to do that will revert your Ruby to whatever RVM's default is the next time you log into your system or open a new terminal window.
When RVM installs a new version of Ruby, it installs only the default gems. It CAN upgrade a Ruby to another version, and optionally install the existing gems as it does so, but that's not what you asked it to do: rvm install 2.0.0 only installs Ruby. At that point you have to install the other gems you need, which would include Rails.
My general practice when installing various versions of Ruby and the gems I like is to use two command-line pipes to dump my existing gems, then (re)install them. First I switch to an existing Ruby whose gems I want to duplicate, then run:
gem list | cut -f1 -d' ' > ~/gem_list
Then I switch to the newly installed one, and run this:
xargs gem install < ~/gem_list
This does a completely clean install of the gems, outside of RVM's commands.
Why? Habit. Paranoia based on some "experiences" I had in the past with RVM.
Once that's all done and I have brand-spanking-new Ruby and gems, I'll proceed with running bundler or other housekeeping chores.
when you install a new ruby version, you have to reinstall all the gems for that version. start of by installing bundler first. Then run bundle in your rails root directory. When you encounter no errors, you're good to start the rails server. Good luck!
run bundle install on the application root, you need to reinstall all your dependencies for the new version of Ruby.
I recently reinstalled Ubuntu 12.04 after the upgrade package broke my last install. I've been following this walkthrough to restore Rails and continue working on my existing projects. I've already installed rvm, all the packages listed by rvm requirements, and all my development tools (e.g., vim, git, etc.).
However, I get stuck on the rails command, whether I'm trying rails (n,s,g), and returns the error message
$ rails
The program 'rails' is currently not installed. You can install it by typing:
sudo apt-get install rails
I've already done the following:
$ gem install rails
Successfully installed rails-3.2.3
1 gem installed
But based on the following checks, it still hasn't installed.
$ which gem
/home/eyoung/.rvm/bin/gem
$ which ruby
/home/eyoung/.rvm/bin/ruby
$ which rails
(no output)
I'm at my wit's end; any ideas on what's going on?
Extra details:
OS: Ubuntu 12.04 x86_64
Packages: RVM installed Ruby 1.9.3p194 w/ openssl & Rubygems
ruby and gem are on the system $PATH
EDIT: By request,
$ gem list rails
*** LOCAL GEMS ***
rails (3.2.3)
As rails gem was installed and all the other paths look correct, you need to set rvm to use that ruby as your default version. It will set all the paths correctly so you can use your gems and rails command.
rvm use 1.9.3 --default
I updated to 12.04 as well, and ran into the issue as well. After quite a bit of head scratching, I decided to reinstall rvm.
Referencing a previous question.
I am actually reading a rails book that is written for rails 2.3.5. I want to test Rails 3 beta as well. Is it possible to have such a setup in my Mac OS leopard?
I have tried with gem list -d rails. There are many versions stored in my mac but I don't know how to use different versions of rails while creating applications using rails command
While RVM is great there's no need for it in this use-case.
Install the Rails 3 gem: gem install rails—pre
Create new project: rails project_name (this will use the latest version installed)
To create projects with a specific version: rails _2.3.5_ project_name
Yes! Try rvm. It is awesome, you can have many different versions of Ruby, and for each one you can have different versions of gems. And you can run the same tests on all those versions. Isn't that cool?!
Quick How-To:
$ rvm install ruby-1.8.7 --default
$ gem install rails -v 1.0.0
$ rvm gemset create rails238
$ rvm 1.8.7#rails238
$ gem install rails -v 2.3.8
Now,
$ rvm 1.8.7
will give you ruby 1.8.7 and rails 1.0
And,
$ rvm 1.8.7#rails238
will give you ruby 1.8.7 and rails 2.3.8
You can make 2.3.8 as default one with
$ rvm use 1.8.7#rails238 --default
BTW rvm is documented really good.
The way to do this anymore is to use RVM, the Ruby Version Manager, which isolates different Ruby environments from each other.
A coworker of mine did a blog entry on setting up Rails 3 and RVM (and Ruby 1.9), which you might find interesting.
I'm using Ubuntu 8.10 and I installed Ruby and Ruby on Rails following the directions on this site. The exact directions I followed are no longer there as it appears the rubyonrails.org wiki has changed recently. But I installed it the long way. Installed Ruby, then Gems, then installed Rails using "gem install rails".
I haven't really messed with Rails for a while, and I tried to use the Gem command today and...
The program 'gem' can be found in the following packages:
* rubygems1.8
* rubygems1.9
Try: sudo apt-get install <selected package>
bash: gem: command not found
That's just weird to me because I installed rails using the gem command. I have been seaching my computer for the gems binary so I could create a link to it in the bin directory but I can't find it. I know it's installed becaues when I run 'script/server' and go to localhost:3000 in a browser I get the following version information:
Ruby version 1.8.7 (i486-linux)
RubyGems version 1.3.1
Rails version 2.2.2
Active Record version 2.2.2
Action Pack version 2.2.2
Active Resource version 2.2.2
Action Mailer version 2.2.2
Active Support version 2.2.2
Anyone know how I can get my gem command working again? Thanks for any help.
Note: I am new to Rails and fairly new to Ubuntu and Linux in general.
Did you install rubygems from apt-get? If yes, maybe you should try to remove it and install it from source.
Here is another article on installing Rails on Ubuntu:
http://www.rubyinside.com/how-to-install-a-ruby-18-stack-on-ubuntu-810-from-scratch-1566.html
Essentially, you can install Ruby from apt-get or source, but it's recommended to install rubygems from source.
You could look to see if it's in:
/usr/bin/gem1.8
if it is, then symlink /usr/bin/gem to it:
sudo ln -s /usr/bin/gem1.8 /usr/bin/gem
BTW, here's another tutorial on how to install rails on Ubuntu 8.10:
http://articles.slicehost.com/2009/1/6/ubuntu-intrepid-ruby-on-rails