When writing code, we all face a common issue of creating complex objects with many possible configuration options. This can be a daunting task, especially if we need to create these objects in a consistent and error-prone. It is where the pattern comes into play. The Builder pattern is a design pattern that can help us to solve this problem. It allows us to create complex objects step by step, and it provides a clear and concise way to structure our code. In this article, we will take a look at how to implement the Builder pattern in Ruby on Rails. We will also discuss the benefits of using the Builder pattern and when you should use it in your own code.