Rails Add Gem to Gemfile - Shell/Bash

As a Ruby on Rails developer, adding gems to your application is a crucial part of the development process. In this tutorial, we will discuss how to add gems to the Gemfile using the command line interface.

Prerequisites

Before we begin, make sure you have Ruby on Rails installed on your system. You can install Ruby on Rails using the following command:

gem install rails

Step 1: Open the Terminal

Open your terminal and navigate to your Rails application directory.

cd /path/to/rails/application

Step 2: Edit the Gemfile

To add a new gem to your application, open the Gemfile using your favorite text editor.

nano Gemfile

Step 3: Add the Gem

In the Gemfile, add the gem you want to use along with its version number.

gem 'devise', '~> 4.7.1'

Save and close the Gemfile.

Step 4: Install the Gem

To install the newly added gem, run the following command:

bundle install

This command will install any missing gem dependencies and update your Gemfile.lock file.

Conclusion

In this tutorial, we have learned how to add a gem to the Gemfile using the command line interface. Adding gems is an important part of developing Ruby on Rails applications, and being able to do so quickly and easily is essential to your workflow.

By following the steps outlined in this tutorial, you should now be able to add new gems to your application and install them using the bundle install command.