As I have started using Linux (Ubuntu) to broaden my knowledge, but the flow for ruby (rails) development does not feel so smooth as on Mac OSX.
Do you use rvm to manage ruby gems in Linux?
One particular issue I face is that I could install rails with only sudo command. But this forces me to use sudo for all the time under my rails project.
P.S.
Might be I am missing some point with the way you do things in Linux so it is not related to ruby (or rails) at all.
It is preferred to use rvm. we can install ruby and rails without rvm as well, but we can have only one version at a time. You can find the instructions to install rvm from following link - rvm installation.
If you are the only person working on ruby rails, install in single user mode(doesn't need to go with sudo)
Installing ruby and rails only using superuser privileges means you're installing it from distribution packages. That's not recommended, and you get unneeded overload writting sudo before any rails command.
Install rvm or rbenv in your home directory and things should be smooth.
Related
I am having a lot of issues on ruby & gem installation due to which my running projects are stopped working.
Current issues
Can anyone please guide me on "how to completely uninstall ruby + gems + rails out of my Ubuntu 14.04 and then start installing them as fresh".
I am also unable to remove this. Maybe once I completely throughout of my system. It may allow me to fresh install ruby n rails. Looking into this in order to make things work again.
Can anyone help?
If you can see my question up there, I have rbenv, ruby and rails installed and a lot more. I am not able to run it though. And due to which I am thinking of removing it out of my system and install them as fresh. Today, I somehow was able to fix a few issues and created a new rails application and started the server using MySQL. But, its too showing errors on other ruby lib command: rails script/generate model Book Rails is throwing me errors.
/home/<user>/.rvm/gems/ruby-2.5.3/gems/railties-5.2.1/lib/rails/app_loader.rb:53: warning: Insecure world writable dir /home/<user>/.rvm/gems/ruby-2.5.3/bin in PATH, mode 040777
rails aborted!
Don't know how to build task 'script/generate' (see --tasks)
Can anyone help?
I highly highly recommend not touching the built-in ruby/rails/gems installation.
It's pretty standard these days to use a very lightweight manager, like rbenv which allows you to work with multiple versions of ruby, each with it's own installations of gems. There is also rvm, which is a heavier manager and a bit more invasive.
install the newer versions with rbenv
brew install rbenv
rbenv init
Close your Terminal window and open a new one so your changes take effect.
Verify that rbenv is properly set up using this rbenv-doctor script.
rbenv install.
brew upgrade rbenv ruby-build
and then install rails
ruby on rails setup
for database i preferred sqlite browser
I've installed Ruby on a Windows computer
After Setting Up Ruby Installer What Command line tools do you use?
http://railsinstaller.org/en
I've tried the command
rvm use 1.9.3
using the command prompt ruby and rails
I get the error message
rvm is not a recognised command
From RVM’s FAQ:
Does RVM work on windows? Will it in the future?
NO. If you would like to manage multiple versions of ruby on windows please use pik which is an excellent tool by Gordon Thiesfeld. You can find it on GitHub. There are plans to include windows support in RVM 2.0.
https://rvm.io/support/faq#does-rvm-work-on-windows-will-it-in-the-future
Doing Rails development on Windows is a little bit more of a challenge and you may run into some annoyances, but it's definitely possible.
Uru worked well for me as a nice alternative to RVM, which doesn't run on Windows. However, if you just want to have one version of Ruby installed on your computer and work with it, you don't even need to bother with Uru.
Windows is not the best environment to develop with Ruby ...
RVM doesn't work and PIK hasn't updated for more than 2 years..
Github of Pik
This installer doesn't install RVM. It installs Ruby interpreter and Rails.
Since you've installed it, I assume you have your Ruby and libraries for it (called gems) rails and bundler. Execute gem list in your shell to verify (it should output a looong list).
Then you should create a new Rails project:
rails new project_name
...and then go into the folder that got created
cd project_name
bundle what you have:
bundle install
...and launch the server to see if it works:
rails server
or
rails s
You will likely run into issues with tzinfo gem if you're on 64-bit Windows, but that can be easily fixed by searching around StackOverflow, it's been discussed.
Gool luck to you. Developing Rails applications in Windows proved to be hard to me. Consider launching a virtual machine (using, for example, VirtualBox) with Linux aboard. That's what you could do in Linux:
install RVM as the site suggests:
curl -sSL https://get.rvm.io | bash -s stable
install the latest MRI available - feel free to replace ruby with the version you need, like rvm install 2.0.0
rvm install ruby
select and set as default the Ruby you need, you've tried a similar line apparently with Ruby 1.9.3
rvm --default use ruby
another long process
gem install rails
rails new project_name
(same as described above)
cd project_name
bundle install
rails s
That should work, and that's what you've probably seen. Again, I highly recommend using Linux in VirtualBox (or anything similar) for Rails development. A native Linux installation could only be a better environment, but most people are not ready for this just yet.
This is a beginner-level question.
I'm using Ubuntu 12.04
I copied a project (created on Rails 4 using the rails new command) from Dropbox to my local environment, where I have previously install Rails 4 and up-to-date Ruby and RVM, went to project's directory, typed rails server and got
The program 'rails' is currently not installed. You can install it by typing:
sudo apt-get install rails
I ran gem install rails instead.
Will I have to run gem install rails on every project's directory? I thought the Rails install was a general and accessible on my whole environment.
The project was created using the same Ruby version, but on a MacOS X system.
The project is a static web brochure and has no database configuration.
Thank you in advance.
Make sure you're using the correct version of Ruby - the same version that you'd installed Rails into - with rvm list.
You likely have two of them (since you have such an issue) - the system Ruby and the RVM-installed Ruby. And likely RVM didn't engage and hook up the correct path to the rails executable, thus the error.
This should fix the issue:
rvm use whatever-ruby-you-had-installed-rails-into
Where whatever-ruby-you-had-installed-rails-into is a string like ruby-2.1.0-p0 taken from the rvm list output.
To make RVM retain Ruby version for the project.
echo whatever-ruby-you-had-installed-into >.ruby-version
in your project's path.
So after a few hours of testing, reproducing the problem, and reading (the other answers inclusive) I got the solution as follows:
Short answer: No. Rails needs to be installed only once.
Long answer: This problem occurred because of a default setting on Terminal that prevents the system from using RVM installations of ruby and rails. The solution is to integrate RVM with gnome-terminal as described in the RVM website.
With terminal window active, go to the menu at the top bar
Edit > Profile Preferences > Title and Command tab
Check the Run command as a login shell box
Restart Terminal and make sure your gemset and ruby version are set
rails server should now work as expected (you might be prompted to run bundle install before Rails can actually run fine, follow the promtp).
I am still learning to work with Ruby on Rails, so any inputs, clarifications, or additional information on the issue is more than welcome.
You don't have to install Rails on every project, but the gems that you need for that project.
With bundle install you install all the gems that you specify in Gemfile.
If you want to avoid reinstall the gems every time you change project, I suggest you to have a better look to RVM: it has got an opt called gemset (https://rvm.io/gemsets), if you use it you just need to switch your gemset:
rvm gemset use yourgemset
I hope it can help you.
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?
I set up RVM and used it to install Ruby and a few other libraries. As I was going through various tutorials and set-ups of other technologies like Rails, I began getting confused about what I should do via RVM and what I should just do as the tutorials suggest.
One example is the RubyGems tutorial here:
http://rubygems.org/pages/download
Should I download that tar file they are talking about? Seems unnecessary since that is what I thought RVM was for. Do I even need RubyGems? What is that for really?
Also, how do I actually get Rails? Is there a precise RVM command to actually download and install Rails?
It helps me to think of RVM as a layer of abstraction between you and the ruby ecosystem.
Without RVM: ruby, gems, and ruby related binaries (like rake, spec, gem, etc) are all installed directly into your operating system directories.
With RVM: ruby related stuff is intercepted by rvm so that ruby, gems, and ruby related binares are "installed" into ~/.rvm dir in a nice, clean, organized way. RVM sits between ruby, gems, and related binaries and the operating system. It provides a way to have multiple ruby environments (with different gems and binaries) on the same machine.
So, no matter whether you have rvm installed or not, you should be able to run the commands almost exactly(*) as they appear in any tutorials out there on the web. In other words, you can sort of "forget" that RVM is installed; the ruby ecosystem should work just as if it wasn't installed.
So, yep, you're gonna have to run gem install rails, etc.
Hope that helps clear the confusion.
(*) There are some small differences. For example: you shouldn't run commands as sudo when RVM is installed.
Should I download that tar file they are talking about?
No. Ruby 1.9+ includes gems. RVM retrofits it for 1.8+.
In general, be careful with any directions you find on the internet explaining how to install anything, unless you have enough experience to understand completely what they want you to do. In particular, any time they want you to install something using sudo or as root.
Specifically, when working with RVM, you do NOT want to use sudo to install Ruby, or any gem. RVM works by setting up a sandbox for your development, and relies on your account's environment, modifying your path so any Ruby requests go to the currently selected RVM-managed Ruby or gems or any commands they install. sudo pushes your normal environment to the side, substituting root's temporarily, installs whatever you asked it to do with root's permissions, then reverts to your environment.
When you go to run the command, or find the gem, as you, it can't be found by RVM's Ruby, because the file was installed outside RVM's sandbox, or, it can't be read or modified, because it's owned by root. Whatever the actual cause, the end result will be weeping and gnashing of teeth.
RVM doesn't subvert the gem functionality. gem is used to install and manage Ruby gems, and RVM tweaks it to use the sandbox for all its machinations. You get added functionality because of RVM's support of gemsets, but gem works as it always has, only it has "big brother", RVM, controlling its world.
No need to install rubygems. RVM should have already installed rubygems. RVM is (in my opinion) useful for managing different installations of ruby (say 1.8.7 and 1.9.2) or different gemsets. If you just have one version of ruby and don't care about different gemsets, RVM isn't really that much of a change. If you want to just install rails, just use gem install rails. If you have an existing rails 3 app, install bundler first gem install bundler and then bundle install to get rails and other gem dependencies.