CODEWITHSUNDEEP
ruby-on-railsrubyrubygems
Sam Kong
Sam Kong

Reputation: 5800

How to specify version of a local gem in Gemfile?

I have a local gem and a rails app that uses the local gem.

Is there a way to specify a specific version of the gem?

I know that 'rake install' generates *.gem in /pkg directory of the gem. But I don't know how to use it.

Here's how I use it now:

In Gemfile:
gem 'mygem', path: '~/shared/mygem'

Thanks.

Sam

Edit:

I think my question is almost a duplicate of How to tell the Gem File to use a specific local copy of a gem.

I just need to know how to specify a specific version of a local gem.

Upvotes: 0

Views: 1749

Answers (2)

ckreon
ckreon

Reputation: 51

To specify versions, or more specifically, a range of versions, you use operators like you would in ruby code.

The operators should be:

>= , <= , =, or ~>

Ranges allow that it may not be possible to match the exact version number (especially true for Windows-specific gem builds).

The pessimistic operator (~>) is often considered the best choice, as it stays within the same dot-range as the build you are using (1.0.4 would never reach 1.1.0, but could use anything between).

An example of the gemfile syntax:

gem 'sinatra', '~> 1.4.4'

or

gem 'uglifier', '= 1.3.0'

Upvotes: 0

GeekRiky
GeekRiky

Reputation: 375

In Gemfile:
gem 'mygem', path: '~/shared/mygem', branch: 'branch name'

Or use ref: 'commit number' if your version is in a specific commit

Upvotes: 1

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