Leveraging Services in Rails: Advantages and Implementation

Alessio Bussolari
2 min readNov 1, 2023


Ruby on Rails is renowned for its convention-over-configuration approach, which emphasizes a specific way of structuring applications. As applications grow, models and controllers can become bloated, making the code harder to maintain and understand. That’s where service objects come into play.

Advantages of Using Services in Rails:

  1. Single Responsibility Principle:
    Service objects follow the Single Responsibility Principle (SRP), meaning each service has one job. This makes the code more maintainable and readable.
  2. Reduced Model and Controller Bloat:
    By moving complex business logic from models and controllers to services, you can keep models focused on data relationships and controllers on handling HTTP requests.
  3. Reusability:
    Services can be reused in different parts of the application, promoting the DRY (Don’t Repeat Yourself) principle.
  4. Testability:
    With a singular focus, services are easier to test, ensuring that they perform their specific task correctly.
  5. Modularity:
    Services can be composed or called within other services, promoting modularity and a layered architecture.

Implementation Example in Rails:



Alessio Bussolari

Ruby on Rails programmer since 2009. Current CTO at COSMIC SRL, where I lead the team in creating innovative solutions.