I have been using RVM (Rails 2.0.0) for a project in the terminal doing commands etc. and have noticed that when I opened a new terminal page the rails command didn't work it just shot back the error:
Rails is not currently installed on this system. To get the latest version, simply type:
$ sudo gem install rails
But I had it installed and have even built half an app using it so far... what happened all of a sudden and how do I fix it to keep going with my project.
I was having the same problem on with the Rails tutorial. It looks like rvm is using the gemset defined in the Gemfile to override the default gemset. You should see this if you execute:
rvm gemset list_all
What I saw was this:
(default)
global
=> railstutorial_rails_4_0
So rails is fully installed in rvm's default gemset, but not in the new one ("railstutorial_rails_4_0" in this case). I solved this with the following commands:
bundle install --without production
bundle update
bundle install
This solution appears to have persisted across terminal sessions.
Okay so I got it to work by simple removing the code in the Gemfile that states the version of Ruby the app is to use and then it worked fine. Must of been some conflict with RVM installed on my machine and the Gemfile.
Related
I have just set up ruby and rails on a freshly installed freeBSD. It works great. I can do rails new blabla mv into blabla and do rails s and it just works.
I had an up and running rails app on another computer. I copied the repertory that contained the app to the new computer running freeBSD. However, when I mv into that repertory of the rails app and to rails server I get -bash: rails: command not found
I have tried creating a new app with the same name and let rails create all the repertories and then copy the files of the existing rails app therein but no success.
I can run rails -v and rails s from within any repertory and get correct answer, but when I move into that specific repertory I get that command not found.
You're probably using a ruby version manager I suspect (rbenv/rvm)? Check the ruby version in your Gemfile (top of the file). It probably isn't the same as the ruby version you have installed. If you're using one of the above mentioned version managers than install the correct ruby for your rails project. After that you can do a gem install bundler in the project directory and after run bundle install which will install rails and all dependencies.
Which version you are using? It happens with earlier versions. Try updating your gems and bundler. And try again. Hope it helps.
Did you try running bin/rails s? I think tha you need run bundle install too.
I'm new to rails. After finally getting my environment to work properly with RVM 2.0.0 rails 4.0.5, all of a sudden rails disappeared and I keep getting the message: Rails is not currently installed on this system...
When I quit terminal, reopen it, and type:
$ rails v
It shows 4.0.5
However, as soon as I change directory into my rails app and check the rails version I get the message that rails is not installed.
Any idea what's going here?
When you use rvm you have multiple versions of ruby installed. You select which one you want like this:
rvm use 2.0
or
rvm use 2.1
You can also specify a ruby version in a .ruby-version file in a directory. Then when you change to that directory in the terminal, RVM will switch versions for you.
Each version of ruby has its own set of installed gems. Rails is a gem.
Ergo, when you installed rails, you were in your default ruby version (probably the one build-in on your system). When you change directory to your rails application, RVM is kicking in to switch to the correct ruby version for you. But you don't have rails installed in that version.
So the solution is to switch to the directory for your rails app and run:
bundle install
This will install your gem bundle for your application, including the rails gems, and it will do it into the correct ruby version.
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.
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.
I installed Ruby and Rails using apt-get in Ubuntu. Then when I test my installation, this thing happen.
When I call rails server inside a rails-created-folder, rails created a new folder called "server" for me, with a correct folders structure, including controller folder, app folder, gemlock file, etc.
How could it possibly happen? I will try reinstalling RoR, but has anyone encountered this?
Last time, I used RVM, but whenever I create a new app, I will have to waith for rails to redownload all the bundle file, but in this installation, I don't have to. Can you help me explaining it?
Thank you and best regards
As pointed out in the comments, it sounds like your rails executable is rails 2.
Try gem uninstall rails, select all versions.
Run rails -v. If this command works you've got a system version of rails that isn't being handled by RVM. BTW, this is why many rails devs are shifting from RVM toward rbenv + bundler.
If you still have rails after gem uninstall, run sudo gem uninstall rails. On RVM, sudo gets to your system gems. You might want to sudo gem uninstall everything, so you don't have this conflict in the future.
gem install rails, you should get version 3.2.8.
Try rails new my_app again. It should work. If this doesn't work, try the following:
Create a parent directory for your rails projects, like ~/rails. Then create a GEMFILE that looks like this:
source :rubygems
gem 'rails', '~>3.2.8'
Then inside ~/rails run bundle exec rails new app_name.
If that doesn't work... you've got a bigger system config problem of some kind I guess.