What is the Ruby bundler?
The Ruby programming language allows you to manage gem command.
This gem command is very useful for distributing programs and libraries, such as the famous Ruby on Rails.
Gemfile is the core of a file the specifies the source of the packages, the packages, and the versions.
Take a look at the following example:
source 'https://rubygems.org'gem 'hello-world', '~> 1.2'
We have just created a project that only requires one library at version 1.2.
Bundler
Bundler helps us with gem management. It create a Gemfile.lock file that can store more information about our project, such as:
- platform architecture
- bundler version
- gemfile source
- other information that can help when we need to replicate our environment
We can install it using:
$ gem install bundler
We just need to create our Gemfile (as shown above) and run:
$ bundle install
This command will generate our Gemfile.lock file. Now, we can be sure that our dependencies are present in development, staging, and production.