CODEWITHSUNDEEP
rubyherokubundler
Matt - sanemat
Matt - sanemat

Reputation: 5618

How to detect if my ruby app is running on heroku without config:add?

In Gemfile, I want to write pseudocode:

ruby: '1.9.3' if ENV['HEROKU']

Because I want to run my app on another platform, version like jruby, ruby2.0.0 if !heroku. I think this is heroku specific var, HEROKU_POSTGRESQL_VIOLET_URL

ruby: '1.9.3' if ENV['HEROKU_POSTGRESQL_VIOLET_URL']

What is more better way to do?

Related: How to detect if my app is running on Heroku?

Oops, HEROKU_POSTGRESQL_{VIOLET,SLIVER,RED,...}_URL, this is distributed.

Upvotes: 1

Views: 971

Answers (2)

Paul
Paul

Reputation: 46

It seems to me that if ENV.keys.any? {|var_name| var_name.match(/heroku/i) } would be a relatively sane approach.

Upvotes: 3

Daniel Vartanov
Daniel Vartanov

Reputation: 3267

If you don't want to add another environment variable, you could change Rails environment from 'production' to 'heroku' (but it should be done by changing environment variable RAILS_ENV anyway).

Therefore, locally your Rails environment will be development/test/production, but on Heroku it will be 'heroku' and you'll be able to check:

Rails.env.heroku?

Hope it helps.

Upvotes: -2

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