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Editorial Team
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Asked: 2026-06-10T11:17:51+00:00

I work as a developer supporting several apps built in Rails, often I need

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I work as a developer supporting several apps built in Rails, often I need to install gems that are not included into the gem file.

Last day I build a project and when I try to run it on another computer I experienced some issues with missing gems, a lot actually and I didn’t know where to get a list of all the missing gems or how to install them.

The question is, is there a way to include all the gems that the project needs into the gem file so next time someone try to run it on another computer it will be enough to use the comand bundle install.

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  1. Editorial Team

    You need to include the Gems in your Gemfile, and then run bundle install on ANY new machine in order to install those Gems and their dependencies. For example:

    source ‘https://rubygems.org’

    gem 'rails', '3.2.6'
gem 'jquery-rails'
gem 'mongoid'
gem 'devise'
gem 'cancan'

    With this example, all dependencies of rails such as Active Record, Action Pack and so on will be installed when bundler installs rails. The same for the remaining gems and their dependencies.

    If you are planning, and it appears that you are, to spend much time with rails, you should really read up on Bundler.

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