Fed Up Installing Rails.... How Do I Get Rid Of The Dependencies?

[Somnath Mallick]

Hi Everyone,

Just moved into a project and have to make a web application in RoR. The problem is dont have any clue on installing Rails. I am trying v3.0.11 and every time i execute the command i get some dependency error. So all in all i am moving around in circles, downloading gems, trying to install, only to find i need more gems. Is there any way to do it in one step?

C:\ruby\bin>gem install rails
ERROR:  While executing gem ... (Gem::DependencyError)
    Unable to resolve dependencies: railties requires thor (~> 0.14.6), rack-ssl (~> 1.3.2); actionmailer requires mail (~> 2.3.0); activeresource req
uires activemodel (= 3.1.3); activerecord requires activemodel (= 3.1.3), arel (~> 2.2.1), tzinfo (~> 0.3.29); actionpack requires activemodel (= 3.1.
3), rack-cache (~> 1.1), builder (~> 3.0.0), i18n (~> 0.6), rack (~> 1.3.5), rack-test (~> 0.6.1), rack-mount (~> 0.8.2), sprockets (~> 2.0.3), erubis
 (~> 2.7.0); activesupport requires multi_json (~> 1.0)

I am on WinXP, I have Ruby v1.9.3p0 and Gems version is 1.8.11.

Any help would be appreciated.

[Mohamed Sanaulla]

Were you able to install rails?
On Linux environment I did have few issues with SQLlite related dependencies but then I individually resolved it and installed rails gem.

So may be you might have to resolve the dependencies? Or someone should have faced a similar issue and there might be a solution out there. Please post the solution if you are able to find one so that it will help people searching for similar issues.

But I would want the tool to resolve the dependencies and download them for me.

[Somnath Mallick]

I am on Windows! Till now no luck. Got an EXE file... lets see if i can install and make it work from there.

[Mohamed Sanaulla]

Somnath Mallick wrote:I am on Windows! Till now no luck. Got an EXE file... lets see if i can install and make it work from there.

Rails installer? And its better to avoid using Instant Rails as its usually not updated with the latest version of rails/ruby.

[Somnath Mallick]

Yes that one. I am currently uninstalling all previous traces of Ruby on my PC. Then I will see if that works. I have currently got 1.3 of that. Dont know what it has inside. But i am really frustrated. I have downloaded something around 40 gem files and still not resolved the issues!

[Katrina Owen]

I'd highly recommend trying out bundler: http://gembundler.com/

[Mohamed Sanaulla]

Katrina Owen wrote:I'd highly recommend trying out bundler: http://gembundler.com/

This is the one that comes with the Rails 3 also right? So one has to run the bundle install from the rails app directory.

[Katrina Owen]

Yes that is correct. But you can use it with any project, and even Rails 2 projects (you just need to hand-roll the Gemfile).

One thing that can trip you up is that you may need to use

bundle exec rails g migration ...

instead of just

rails g migration ...

so that you get all the correct dependencies loaded into the environment when you run the command. Same thing with the console:

bundle exec rails console