Friday, May 17, 2013
On Thursday, May 16, 2013 4:41:01 PM UTC-4, Colin Law wrote:
On 16 May 2013 21:35, Love U Ruby <li...@ruby-forum.com> wrote:
> Colin Law wrote in post #1109259:
>> On 16 May 2013 18:50, Love U Ruby <li...@ruby-forum.com> wrote:
>>> then why I got the error:
>> I did say I /think/ you have installed it. Obviously you have not.
>> What happens when you install it, as has been suggested numerous times
>> on the this thread, by
>> gem install rails
>>
>> Colin
>
> which version of rail I need to install, as I am using ruby2.0.0p0 ?
You should not choose the version of Rails that is right for Ruby, you
should decide which version of Rails you want then make sure you have
an appropriate version of Ruby. Remember that with rvm you can easily
install another version of ruby. Also you can install multiple
versions of Rails.
Assuming that you are starting by working through a tutorial then
install the version of rails that the tutorial requires.
When you come to writing your own app then presumably you will want
the latest stable version, or perhaps you want to go with the beta
version of Rails 4. That is for you to decide.
Colin
I'm a little confused by these posts as well. If you executed the script you posted in your original post without any errors, rails should have been installed. Obviously, you either didn't do that or there were errors.
There are a few things in that script that are not, IMO, optimal. First, I would not install rails with the --pre flag unless you are experienced with Rails and truly intend to test an unreleased version. Second, his/her first action is to install a bunch of modules starting with build-essential, openssl, etc. My only issue is that RVM, like Rails, is constantly being updated/upgraded and this list quickly gets dated. I would install RVM as follows:
Install curl as follows:
sudo apt-get install curl
Then install RVM:
\curl -L https://get.rvm.io | bash -s stable
Once RVM is installed, run:
rvm requirements
it will give you an updated list of modules to install.
I would also run
rvm notes
it will give you other helpful notes on the install.
At this point, as has already been posted above, I strongly recommend www.railstutorial.org. The tutorial assumes you have RVM installed already, but it then walks you through the installation of ruby, rails, git, etc. so I'm not going to go into it. There are two versions of the tutorial online, a 3.2 version and a 4.0 version (the 4.0 version is beta). I agree with Colin, you should choose the version of ruby, rails, and gems that the tutorial uses. This is particularly important with the 3.2 version. If you don't use the versions of rspec and capybara that the tutorial uses, you will be very frustrated.
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