Decent Exposure Gem - Goodbye to Repeating Instance Variables

Nov 2, 2017


Welcome to Your SEO Geek's technical blog! In this article, we will explore the Decent Exposure Gem and how it can revolutionize the way you handle repeating instance variables in your Ruby on Rails projects.

Understanding the Need for Decent Exposure Gem

When developing web applications using Ruby on Rails, it is not uncommon to have repeating instance variables across various actions within a controller. This repetition can lead to redundant code and make the codebase harder to maintain. This is where the Decent Exposure Gem comes to the rescue.

What is the Decent Exposure Gem?

The Decent Exposure Gem is a powerful tool that allows you to streamline your codebase by automatically exposing instance variables in your Rails controllers. Instead of manually defining instance variables in each action, the Decent Exposure Gem provides a cleaner and more efficient way to organize your code.

Benefits of Using the Decent Exposure Gem

Let's take a closer look at the benefits that the Decent Exposure Gem brings to the table:

1. DRY (Don't Repeat Yourself) Principle

As developers, we strive to follow the DRY (Don't Repeat Yourself) principle. With the Decent Exposure Gem, you can say goodbye to repetitive instance variable declarations in your Rails controllers. This not only reduces code duplication but also improves code readability and maintainability.

2. Cleaner Controller Actions

By utilizing the Decent Exposure Gem, your controller actions become cleaner and more focused. Instead of cluttering your actions with repetitive instance variable assignments, the Gem provides a clear and concise way to define and manage your variables.

3. Enhanced Code Organization

The Decent Exposure Gem promotes better code organization. It encourages you to define your instance variables only once per controller, resulting in a more structured and maintainable codebase. This organization also makes it easier for other developers to understand and contribute to your project.

How to Use the Decent Exposure Gem

Using the Decent Exposure Gem is straightforward. Follow the steps below to integrate it into your Ruby on Rails project:

Step 1: Gem Installation

Add the Decent Exposure Gem to your Gemfile:

gem 'decent_exposure', '~> 3.0'

Run bundle install to install the Gem.

Step 2: Configuration

In your controller, include the DecentExposure module and define your instance variables using the expose method. For example:

class UsersController

In this example, the :users symbol represents the instance variable that you want to expose.

Step 3: Enjoy Simplicity

That's it! You can now access @users in your views without explicitly defining it in every action of your controller. The Decent Exposure Gem takes care of the repetitive assignments for you.


The Decent Exposure Gem is a powerful tool that brings simplicity and efficiency to your Ruby on Rails projects. By eliminating repeating instance variable declarations, it allows you to write cleaner and more maintainable code. Embrace the power of the Decent Exposure Gem and take your Rails development to the next level.

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Vincent Gregg
Can't wait to try this out! 🙌
Oct 16, 2023
Hud Mell
Great gem! 💎
Oct 4, 2023