CODEWITHSUNDEEP
rubyherokurvm
ben
ben

Reputation: 29817

What is the correct way to specify the Ruby version in a Rails app, using RVM, that will be deployed on Heroku?

The RVM Best Practices state that, to connect a project to a specific Ruby version, you should specify that version in the project-specific rvmrc file.

This SO answer states that, in most situations, you should use specify the Ruby version in the .ruby-version file.

Heroku says you should specify the Ruby version in Gemfile.

What is the correct way to specify a Ruby version, using RVM, if the app will be deployed on Heroku?

Upvotes: 4

Views: 165

Answers (3)

mpapis
mpapis

Reputation: 53188

Check https://rvm.io/workflow/projects - it says you can use Gemfile to specify ruby version for RVM like this:

ruby "1.9.3"

or something more complicated:

ruby File.readlines(".ruby-version").first.strip

and then in .ruby-version:

1.9.3

this way it will work also with other ruby environment managers like chruby

Upvotes: 1

spickermann
spickermann

Reputation: 107142

.rvmrc is deprecated and you should use .ruby-version instead.

But Heroku does not pay attention to the .ruby-version. Heroku wants to have it in the Gemfile. So I think you should use both: .ruby-version (for you) and Gemfile (for Heroku).

Upvotes: 4

Peter Alfvin
Peter Alfvin

Reputation: 29439

You need to place it in the Gemfile for Heroku's sake, but if you're using a version manager, then you'll need to use something else for the sake of the version manager. I think the SO answer makes sense in that regard (i.e. the .ruby-version file).

Upvotes: 2

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