Rails keeps telling me that it's not currently installed

I use `rvm` to manage different rubies and their gemsets. My shell is zsh with oh-my-zsh configured with basic settings. Enabled oh-my-zsh plugins are ruby, rails, osx, and git. Here's the command I used to install ruby-1.8.7 and rails-3.0.7.

rvm install 1.8.7
rvm use 1.8.7
gem install rails -v=3.0.7

and then I typed `rails` and got:

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.

I've tried more thorough installs also, Like reinstall `rubygems` after switching to ruby-1.8.7, or create a completely new gemset, but with no luck.

Here's the rvm info:


ruby-1.8.7-p352@rails:

system:
uname: "Darwin yicai.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64"
bash: "/bin/bash => GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin10.0)"
zsh: "/bin/zsh => zsh 4.3.9 (i386-apple-darwin10.0)"

rvm:
version: "rvm 1.8.6 by Wayne E. Seguin ([email protected]) [

[To see links please register here]

;

ruby:
interpreter: "ruby"
version: "1.8.7"
date: "2011-06-30"
platform: "i686-darwin10.8.0"
patchlevel: "2011-06-30 patchlevel 352"
full_version: "ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-darwin10.8.0]"

homes:
gem: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails"
ruby: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352"

binaries:
ruby: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/ruby"
irb: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/irb"
gem: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/gem"
rake: "/Users/nil/.rvm/bin/rake"

environment:
PATH: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails/bin:/Users/nil/.rvm/gems/ruby-1.8.7-p352@global/bin:/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin:/Users/nil/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/usr/local/sbin"
GEM_HOME: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails"
GEM_PATH: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails:/Users/nil/.rvm/gems/ruby-1.8.7-p352@global"
MY_RUBY_HOME: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352"
IRBRC: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/.irbrc"
RUBYOPT: ""
gemset: "rails"

and the gem version is 1.8.10, the latest.

**For rvm users**

you also need to create gemset:

you have have cloned the project, ran bundle install and when you try rails s and you still get

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.

then try

rvm gemset create <you gemset name>
rvm use gemset <newly created gemset>
bundle install
rails s

Also make sure you are correct version of ruby before creating the gemset
To do this type rvm list

* ruby-2.3.4 [ x86_64 ]
ruby-2.5.3 [ x86_64 ]
ruby-2.6.0 [ x86_64 ]
=> ruby-3.2.1 [ x86_64 ]

# => - current
# =* - current && default
# * - default

The current version being used should have a asterisk before it, like above.

I was following along with the Odin Project ruby-on-rails course by

- installing rbenv,

- adding `eval "$(rbenv init -)"` to `~/.zshrc`

- installing rails gem

- attempting to run `rails new my_first_rails_app`

But I had forgot to run `source ~/.zshrc` after editing the file, so I was seeing the error:

> Rails is not currently installed on this system.

For me ( MacOS Monterey, rbenv) adding rails version to gem install command get the problem resolved.

you can find a specific version of rails that matches to your ruby from this [link][1] and replace the VERSION .

gem install rails -v VERSION
rbenv rehash

[1]:

[To see links please register here]

after successful installation, then rails should be added to /Users/your_user/.rbenv/shims

Also plz check that your shims directory should be the first element of your path.

➜ ~ echo $PATH #
/Users/ario/.rbenv/shims: ...

I found this problem but the solutions above didn't solve it. I am not using rvm (and I'm working on mac) and I had to update the path to add rails executable directory:

echo 'export PATH="/usr/local/lib/ruby/gems/3.0.0/bin:$PATH"' >> ~/.zshrc

Here is how it worked for me:
1. Intall rvm in mac by following the mac [installation instruction](

[To see links please register here]

)

2. `rvm install ruby`

3. `gem install rails`

4. `rails --version`

**Rbenv users**

I had the same issue and this worked for me.

Setting the ruby version in the current directory.

```
rbenv local 2.7.1
```

Then I was able to run `rails new`

I was looking through the source and found another error message that suggested the user run the following command.

I ran the command and everything now works. None of the suggestions above worked for me. Run the command from inside your newly created Rails app.

gem pristine --all

I have encountered this problem, but it has been resolved.
I use macOS, I do not use `rvm`, I only use `HomeBrew`, I first use `gem env` to get the installation directory of all gems, mine is:

$ gem env
RubyGems Environment:
   -RUBYGEMS VERSION: 3.1.2
   -RUBY VERSION: 2.7.1 (2020-03-31 patchlevel 83) [x86_64-darwin19]
   -INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/2.7.0
   -USER INSTALLATION DIRECTORY: /Users/myname/.gem/ruby/2.7.0
...

Then you try to go to `/usr/local/lib/ruby/gems/2.7.0` to find the executable file directory of the rails gem that you have installed, for example: `/usr/local/lib/ruby/gems/2.7.0/bin`, then add to the path environment variable

I was having this problem today. I haven't 100% solved it, but in new tabs I can do `rvm use 2.5.5` and then `rails -v` works fine.

```
➜ my-repo git:(next_release) ruby -v
ruby 2.5.5p157 (2019-03-15 revision 67260) [x86_64-darwin18]
➜ my-repo git:(next_release) rails -v
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.
➜ my-repo git:(next_release) rvm use 2.5.5
Using /Users/amberwilkie/.rvm/gems/ruby-2.5.5
➜ my-repo git:(next_release) rails -v
Could not find rake-12.3.3 in any of the sources
Run `bundle install` to install missing gems.
➜ my-repo git:(next_release) bundle install
```