Have 2 ruby installations 1.8 and 1.9.1, have 2 gems. From "gem1.9.1 install rails" installed rails3 to my system, but don't have "rails" in my "path".
How can i get rails to launch from entering rails in terminal?
EDIT
removed all ruby and ruby-gems from my system (Ubuntu 10.10) and installed ruby1.9.1 - it came with gems1.9.1 and then installed
gem1.9.1 install rails
How do i make "rails" run the installed gem rails?
EDIT 2
Found it!
The rails was installed in /var/lib/gems/1.9.1/bin/rails
just had to add a alias "rails" to it in system $PATH
How did you install your rubies? I'd strongly suggest to use a version manager like rvm, otherwise you're asking for trouble.
You should be specific about your system environment. In windows when you install ruby, you just have RUBY_HOME/bin in your path. Whenever you install rails by gem install rails , it automatically deploy executable files in RUBY_HOME/bin folder. So that you can directly execute that command.
Related
This may sound very basic to many of you. I have just started a Ruby on Rails tutorial in Linux. I'm very new to the Linux OS. I have installed a rvm. But I am unable to install Rails. It's saying "cant load such file --zlib". And I can see two source files for Ruby. Not sure if I have two Ruby installed.
Just take a note that you have selected the correct build system:
"Tools -> Build System -> Ruby"
Then press CTRL+B.
This should work.
You can execute .rb file in sublime using ctrl + b.
It seems you are a bit confused about how Ruby on Rails work.
Sumblime can run your ruby code but not on Rails stack.
My suggestion it's to work always with an open terminal on the directory of your rails application.
Let's assume you created a new rails project as
rails new helloWorld
The rails generetor will create a subfolder helloWorld.This will be your working directory in the terminal.
So you have to do:
cd helloWorld
and then
rails s
It will run your rails application on an embedded server on localhost:3000 by default.
What method did you use to install ruby?
If you compiled from source you may need to do
sudo apt-get install libssl-dev
And then recompile ruby
Otherwise, you may not have the most recent version of Rubygems
Try:
go to https://github.com/rubygems/rubygems/releases/tag/v2.2.3
download rubygems-update-2.2.3.gem
call the directory where the file was dl'ed, then
gem install rubygems-update-2.2.3.gem
update_rubygems --no-ri --no-rdoc
rubygems --version #Should show 2.2.3
gem install rails
Running OSX Mavericks, ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-darwin13.0], rvm 1.25.23 (master), and rails-4.1.0 (allegedly)
I'm working through the railsapps.org book on learning rails and made it about 1/2 way through yesterday. When I stopped for the day, I closed out iTerm2 and shut off the Macbook Pro. Today, I powered up, opened iTerm, navigated to my working directory (~/rubyonrails/learn-ruby) and entered rails -v.
I see this:
`Rails is not currently installed on this system. To get the latest version, simply type:
$ sudo gem install rails
You can then rerun your "rails" command.`
So I run sudo gem install rails and it shows that it has installed rails-4.1.0. Now rails -v still gives me the same error message above.
I tried also running rvm use ruby-2.1.1#learn-rails first and I still get the error message.
So I'm a little stuck and I can't figure out what to do to get rails working. Also, how do I go about setting up the bash environment such that I don't have to go through this each time? It would be nice to nav to my working directory and just start work without having to do a bunch of re-installation and reconfiguration each time.
Regards,
Jeff
please type in your shell:
$ bash --login
and then repeat your commands.
rails -v
Also try to call it with the full path:
like:
/your/path/to/rails -v
I think that the shell just doesn't know where rvm/rails etc is located.
You can solve this by entering:
$ source ~/.rvm/scripts/rvm
When you switch to the ruby-2.1.1#learn-rails ruby/gemset combo, and do gem list, what do you see?
The way people usually use rvm is to have every project folder specify the ruby & gemset it uses (they don't all have to be different). This is done with files called .ruby-version and .ruby-gemset. These should contain, in your case, ruby-2.1.1 and learn-rails respectively.
Set these if you haven't already, then leave the folder and enter it again. Then do bundle install to install the gems for the project into the rvm/gemset combo.
Your problem is that you ran
sudo gem install rails
The error message telling you to do this comes from your system Ruby, which doesn't know that you want to use RVM.
RVM installs gems into your user-space directory. By using sudo, you're bypassing this and installing it into (effectively) the superuser space, i.e. globally.
If you instead just run
gem install rails
then you'll be using RVM's copy of the gem utility rather than the globally installed version.
I'm working on Bluehost. I installed the 3.2.8 gem of rails, and now I get this:
> gem list --local | grep rails
rails (3.2.8)
But:
rails --version
Rails 2.3.11
How can I make the "rails" command use the latest gem? I guess it has something to do with my $PATH variable but I'm pretty much clueless about it.
Also, the gem and rails command give rise to some errors that look like this:
Invalid gemspec in [XXX]: invalid date format in specification: "YYY"
I'm not sure if that's connected (and I'm wondering what causes such errors anyway).
Try running this command:
curl -L https://get.rvm.io | bash -s stable --ruby --rails
What it does is install RVM, which maintains separate gems for each version of Ruby installed. The --ruby and --rails arguments tell it to install ruby and rails while installing RVM. RVM installation automatically updates $PATH and any other necessary environment variables.
At the end of installation, it should prompt you to run:
source ~/.rvm/scripts/rvm
which will make those environment variable changes effective immediately. Alternatively, you can log out and then log right back in.
Run rails -v and ruby -v at that point, and you should see them pointing to the new version. Run bundle install from your RoR app's directory and all the gems you need should install in ~/.rvm/gems/ruby-/gems.
At that point, you can delete/uninstall any gems/rails/ruby from before installing RVM.
EDIT on 10/17/2012:
Nevermind my answer. Even though it might be possible to get Rails 3.x running with the currently installed Ruby 1.8 (see this Stackoverflow question), you won't be able to run Ruby 1.9.x using Bluehost Shared Hosting. Your only choice (for now) is VPS Hosting.
The reason is that Passenger Phusion is tied to the version of Ruby installed in /usr/lib, which you can't change without root access. Even though you can install any version of Ruby with RVM, you won't get Passenger to talk to it and therefore your rails project won't use its gems.
Hi there thanks for looking into this.
after a clean install of Linux ubuntu 10.10 i tried to re-install rails.
after doing sudo gem install rails, I can see I am returned version 3.2.3 of rails
But after generating a new project i couldn't find my gemfile so i tried ruby -v which returns 2.3.4 wich is odd since I know I got the latest.
Also when trying sudo gem update --system I get an error because I might override system files. any solution here?
I'd recommend using rvm to manage your ruby sets -- as well as defining gemsets for each project that will allow you to make sure each project has just the gems it needs.
Here's a link to the rvm installation instructions (they should work with ubuntu):
https://rvm.io/rvm/install/
Here's some info on basic use of gemsets with rvm:
https://rvm.io/gemsets/basics/
Also, when using rails 3+, you should make a practice of typing bundle exec rails -v -- that way you'll use the gems defined for the project you're in.
Can you try typing bundle exec rails -v and letting us know what you see?
Is it possible to use multiple versions of rails using rbenv (e.g. 2.3 and 3.1)? This was easy with gemsets in rvm, but I'm wondering what the best way is to do it now that I've switched to rbenv (also, I'm looking for a way to do it without rbenv-gemset).
not sure if you got an answer to this, but I thought I'd offer what I did and it seemed to work.
So once you get rbenv installed, and you use it to install a specific ruby version, you can install multiple versions of rails to for that ruby.
STEP 1. Install whatever version(s) of rails you want per ruby version
% RBENV_VERSION=1.9.2-p290 rbenv exec gem install rails --version 3.0.11
By using the "RBENV_VERSION=1.9.2-p290" prefix in your command line, you're specifying which ruby rbenv should be concerned with.
Then following that with the "rbenv exec" command, you can install rails. Just use the version flag as in the example to specify which version you want. Not sure if you can install multiple versions in one shot, but I just run this command as many times as needed to install each version I want.
Note: This will all be managed within your rbenv directory, so it's perfectly safe and contained.
STEP 2. Build a new rails project by specifying the rails version you want.
% RBENV_VERSION=1.9.2-p290 rbenv exec rails _3.0.11_ new my_project
STEP 3. Don't forget to go into that project and set the local rbenv ruby version.
% cd my_project
% rbenv local 1.9.2-p290
Now if you want to delete this project, just delete it as normal.
If you want to delete / manage a rails version from rbenv gems, you can use regular gem commands, just prefix your command line with:
% RBENV_VERSION=1.9.2-p290 rbenv exec gem {some command}
And of course, you can delete a complete ruby version and all its shims, etc that are managed within rbenv pretty easily. I like how self contained everything is.
Hope this helps.
For reference, this is a pretty good walk through of at least some of this stuff:
http://ascarter.net/2011/09/25/modern-ruby-development.html
There is a rbenv plugin called rbenv-gemset which should behave similar to the rvm gemset-command but since rbenv was never intended to work this way, I haven't tried it.
I usually manage Rails versions with Bundler as Nathan suggested in the comments of one of the other answers. I create a Gemfile with my desired Rails version, run bundle install, create the Rails application, let it replace the Gemfile and let Bundler take over:
mkdir my-rails-app
cd my-rails-app
echo "source 'https://rubygems.org'" > Gemfile
echo "gem 'rails', '3.2.17'" >> Gemfile
bundle install
bundle exec rails new . --force --skip-bundle
bundle update
If you want more detail, I wrote an article on my blog about it.
Hope it helps!
If you have setup ruby using rbenv the following will work.
Installing rails, the latest version (7.x as of Oct 2022)
gem install rails -v 7.0.2.4
# Find exe
rbenv rehash
To create a rails project with the latest rails version,
rails new project_1
This will create a rails application with the latest version, to verify we can see the rails version in the Gemspec file (or) see the logs during the installation,
Installing rails, 6.x.x.x version
Assuming we are going to install rails 6.0.4.8, then issue the following commands
gem install rails -v 6.0.4.8
rbenv rehash
Now, to create a rails project with 6.0.4.8 version (which is installed previously), specify the rails version along with the rails command.
rails _6.0.4.8_ new project_2
This will create a rails application with the 6.x version, to verify we can see the rails version in the Gemspec file (or) see the logs during the installation,
Other notes
Similarly, we can manage any no of rails versions in any number of
projects.
rbenv rehash Installs shims for all Ruby executables known to
rbenv
In this approach, you don't need to set or modify any ruby
environment variables.
You don't need to modify Gemspec file by yourself.
The instructions work as of Oct 2022.