I downloaded aptana Studio 3 for ubuntu 14.4 recently. When I create a rails application it seems to run on old version of ruby and rails.
In the linux terminal when ask for version of rails and ruby I get new versions like 4.2.0 and 2.2.1.
But in aptana in the terminal it provides i get older version of both ruby(1.9) and rails(2.x)
How to make aptana point to a new version
Consider creating a .rvmrc for that project in its root directory, so that your IDE would load proper ruby and rails version.
For Example create a simple .rvmrc file in your root directory
place the following content into your .rvmrc file
rvm use ruby-1.9.3-p484#gemset --create
By this way, you say your IDE to load appropriate ruby versions and gemset specified.
It works like charm,
Related
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.
I currently have several Rails applications running version 3.2.13 that use Ruby 1.9.3. I plan to eventually upgrade my current applications to Rails 4.0 then upgrade Ruby to 2.0. I need to time the conversion to Ruby 2.0 carefully since from my understanding Phusion Passenger will only handle one version of Ruby without some nose bleeding solutions which I do not plan to attempt to implement at this point.
I currently use one gemset for all my Rails applications. I would like to convert my Rails applications one by one from 3.2.13 to the current version of Rails 4.0 at some point. When I have tried to update one of my applications to a newer version of Rails I was told I had to do a update rails command.
What I want to do is to be able to run some of my applications using Rails 3.2.13 and others using Rails 4.0 until I am sure they will all run properly under Rails 4.0. Once I do this I will review the differences between Ruby 1.9.3 (if any) and upgrade all of them to use Rails 2.0. At this point I understand that I would just create the gemset for 2.0.0 or whatever the latest stable version of Ruby 2 is.
I have done web searches and checked the RVM website. I understand how the gemsets are assigned to the version of Ruby you want to run. However I'm not seeing anything about using gemsets with the same version of Ruby but using different versions of Rails or other combinations of gems on the same machine for different applications. Can this be done?
Any help would be appreciated.
Take a closer look! ;)
First, create a new gemset with a name corresponding to your project
https://rvm.io/gemsets/creating/
ex: rvm gemset create project_name
Then create/edit .rvmrc file in project directory: rvm use 1.9.3#project_name
One pitfall is that if you execute following commands
cd some_project
cd ../other_project
and other_project doesn't have gemset specified you'll stay in some_project gemset. To avoid that you can create .rvmrc file with default gemset in your "projects" directory (if you have one)
Project Folder
|___Gemfile
|__.ruby-gemset
|__.ruby-version
Gemfile with all the required gems mention in your project folder
.ruby-gemset should have gem set name like sample-gemset
.ruby-version file should have specific ruby version (e.g 2.0)
rvm gemset list
it will show gem set created with sample-gemset and do the
bundle install
which will install all the specific gems for this project under sample-gemset,
same you can do for other project to create other gem set, in this way you can maintain different rails/gems and ruby version for different projects with rvm.
Your Gemfile.lock nails down which version of every gem you use - you don't need to worry about gemsets.
bundle install will always install the correct versions and your app will always use the versions in Gemfile.lock, even if there are other versions floating around
I am using Rails v2.3 for my project. Then I decided to use Rails Enterprise Edition.
So, I installed Rails Enterprise Edition in RVM.
But after that, how to tell my project to use this new installed Rails enterprise edition?
work woth RVM very simple!
You could see list of all installed ruby versions by typing
rvm list
To set one of them as current call:
rvm use ree
If you are using gemsets call this:
rvm use mygemset#ree
After selecting current ruby version you could again check "rvm list". Near current ruby version there will be arrow.
If you would like to use specific version of ruby in special folder, than put file called ".rvmrc" in that directory (I placed this file in each project root) with content:
rvm use mygemset#ree
See more info at official RVM site http://beginrescueend.com/rvm/basics/
I just installed Eclipse, then Ruby 1.9.2 then RailsInstaller. I then installed Aptana plugin for eclipse.
My directory setup are as follows:
C:\Ruby192
C:\RailsInstaller\Ruby1.8.7
When I create a new rails project in Eclipse, It throws this error:
LOL#LOL-PC /d/Projects/rail
$ rails .
sh.exe": rails: command not found
I found this solution, but it seems its for linux. I'm using Windows 7.
I reinstalled rails and ruby but its the same thing. I also had installed GitBash and GitExtensions a few months ago and had this problem. I solved it by pointing to the directory where Git was and setting the Default environment to HOME.
I now have no idea what to do to use ruby on rails in this error.
Add the place where you installed rails to your PATH environment variable. (Presumably C:\Ruby192\lib\ruby\gems\1.9.1\gems\rails*\bin)
I also noticed you are using the RailsInstaller for ruby 1.8.7 but seem to have installed ruby 1.9.2. This may cause trouble in the future.
Try following this guide for installing rails on windows. It uses gem install instead of the out dated RailsInstaller.
I have an app using Rails 3.0.6 which I run on two machines. I started with ruby 1.8.7 and recently installed ruby 1.9. I swapped my link in '/usr/bin/ruby' to point to the 1.9 install. When I run 'ruby --version' I get the 1.9. However, in my rails app, when I check 'RUBY_PLATFORM' it shows rails is running with 1.8.7.
How do I tell Rails which ruby environment to use? Strangely, this is not the easiest thing to search for. Probably because I don't know enough about it to form a specific question.
https://rvm.io/rvm/install
Install RVM using these instructions, then you can manage and switch between different Ruby versions and gemsets very easily. Using RVM you can have both 1.8.7 and 1.9.x (or any other version) on your system without having to constantly manually change your path and ruby alias.
Older versions of RVM used the .rvmrc file to automatically switch the ruby within a directory. Newer versions use the .ruby-version file.
To switch between rubies, just type rvm use 2.0.0 or whatever version it is you want to use. For ongoing projects it's a good idea to add the .ruby-version file in the root of the directory that contains the version string you want to use, i.e.
2.0.0