How do I configure my Gemfile for a Ruby project?

How do I configure my Gemfile for a Ruby project?

To configure your Gemfile, start by specifying the Ruby version and then list the gems you need. For example:

source 'https://rubygems.org'

ruby '2.7.0'

gem 'rails', '~> 6.0'

You can also group gems for different environments.

What if I need to add a gem for testing?

You can add testing gems in a group. For example:

group :test do
  gem 'rspec-rails'
end

This way, the gem will only be included in the test environment.

How do I install the gems after updating the Gemfile?

After updating your Gemfile, run bundle install in your terminal. This will install all the gems specified in your Gemfile.

Can I specify different versions of a gem?

Yes, you can specify versions using operators like ~>, >=, or <=. For example:

gem 'rails', '~> 6.0.3'

This will install the latest patch version of Rails 6.0.