How do I install a gem in my Rails application?

How do I install a gem in my Rails application?

To install a gem in your Rails application, you need to add it to your Gemfile and then run bundle install.

Can you show me an example of adding a gem to the Gemfile?

Sure! If you want to add the 'devise' gem for authentication, you would add gem 'devise' to your Gemfile.

What if I want to install a specific version of a gem?

You can specify the version by adding it like this: gem 'devise', '4.7.3' in your Gemfile.

Do I need to restart my server after installing a gem?

Yes, it's a good practice to restart your Rails server after installing new gems to ensure they are loaded properly.